100 Google Ads Interview Questions and Answers (2026)

Updated October 2026.

Google Ads interview questions test whether you know how the auction, keywords and bidding work, and whether you can make an account profitable rather than just busy. This page has 100 Google Ads and PPC (pay per click) interview questions with model answers, from fresher basics to scenarios for 2 to 5 years of experience, with the numbers worked out in rupees.

I'm Raviraj Ramavarapu, founder of Compound Lab, a retention agency. I've managed performance marketing, led the ecommerce business at Healthify, and hire for digital marketing roles. Every answer here is the one I'd want to hear across the table. The test I apply to every paid answer is simple. Does the candidate know what a customer is worth after the first order, or only what the click cost?

How this page works. The 100 questions are split into five sections of 20, from the basics to scenarios for people with some experience. Tap your section below to jump straight to it, or scroll down to read everything in order. Want to test yourself before reading? The last box opens a 10-question mock interview, with your score at the end and no sign-up.

What interviewers look for in a Google Ads candidate

Knowing the menus gets you through round one. After that, interviewers want three things. That you understand the auction well enough to explain why costs moved. That you judge campaigns on profit, not clicks or even ROAS alone. And that your knowledge is current, because Google Ads changes every year and many guides still describe features retired years ago.

Weak answer	Strong answer
"I'd increase the bid"	"I'd check whether we lost impression share to budget or to rank first"
"ROAS was 5x, so it worked"	"ROAS was 5x against a break-even of 2.5x, and repeat orders made it better"
Lists every campaign type	Picks the right two for the business and says why
Talks about clicks	Talks about cost per new customer and what that customer is worth

Google Ads brings the first visit. What happens after the click decides whether it was worth paying for. I show that path in my digital marketing interview questions guide. Running Meta ads as well? See my 100 Meta ads interview questions.

A note on the word PPC. In manufacturing, PPC also means production planning and control. This page is about PPC as pay-per-click advertising.

Mock interview: test yourself in 5 minutes

Want a longer test, with basic, intermediate and advanced levels and a scorecard you can share? Take the free Google Ads quiz.

Google Ads interview questions for freshers

1. What is Google Ads?

Google's advertising platform, called Google AdWords until 2018. Businesses bid to show ads on Google Search, Shopping, YouTube, Gmail, Discover, Maps and partner sites, and usually pay when someone clicks.

2. What is PPC, and how is it different from SEM?

PPC (pay per click) is any advertising where you pay for each click. SEM (search engine marketing) means getting visibility on search engines, and in practice usually means paid search ads. In interviews the two are often used for the same thing, so say which you mean.

3. What are the main Google Ads campaign types?

Search (text ads on results pages), Shopping (product ads from a Merchant Center feed), Performance Max (one campaign across Google's channels), Demand Gen (visual ads on YouTube, Discover and Gmail), Video (YouTube), Display (banners on partner sites) and App campaigns. A D2C brand usually starts with Search, Shopping and Performance Max.

4. How does the Google Ads auction work?

Every time someone searches, Google runs an auction among the ads eligible for that search. It ranks them by Ad Rank, which decides whether your ad shows and in what position. You don't simply win by bidding the most.

5. What is Ad Rank?

The score that decides your ad's position and whether it shows at all. Google bases it on your bid, the quality of your ad and landing page, the minimum thresholds for that auction, the competition, the context of the search (device, location, time), and the expected impact of your assets. Many guides say Ad Rank is bid times Quality Score, which is an old simplification. Google lists the full set in its Ad Rank help page.

6. What is Quality Score?

A 1 to 10 rating, at keyword level, of how relevant your ads, keywords and landing pages are compared with other advertisers. It's built from expected click-through rate, ad relevance and landing page experience, as Google Ads Help explains. It's a diagnostic. The auction uses real-time quality, not this number directly.

7. What is the difference between CPC, CPM and CPA?

CPC is cost per click, CPM is cost per thousand impressions, and CPA is cost per acquisition, meaning per sale or lead. Search is mostly bought on clicks, awareness video on impressions, and most businesses judge everything on CPA in the end.

8. How do you calculate CTR?

Clicks divided by impressions, times 100. 600 clicks from 40,000 impressions is a 1.5% CTR. Some guides print this formula upside down, so say it carefully.

9. How do you calculate conversion rate and CPA?

Conversion rate is conversions divided by clicks. 30 sales from 1,500 clicks is 2%. CPA is spend divided by conversions. ₹45,000 spent for those 30 sales is a CPA of ₹1,500.

10. What is ROAS?

Return on ad spend, which is conversion value divided by ad spend. ₹45,000 spent bringing ₹1,80,000 in sales is a ROAS of 4, written 4x or 400%.

11. What is the structure of a Google Ads account?

Account, then campaigns, then ad groups, then keywords and ads. Budget, location, language and bidding sit at campaign level. Each ad group holds a tight set of keywords and the ads written for them.

12. What are keyword match types?

They control which searches can trigger your ad. Broad match is the widest and uses signals beyond the words, phrase match needs the meaning of your phrase, and exact match is the tightest. "Broad match modifier" was retired in 2021, so don't list it as a current option.

13. What are negative keywords?

Words or phrases that stop your ad showing. A paid course adds "free", a premium brand adds "cheap". They're a keyword type, not a match type, and can be shared across campaigns in a negative keyword list.

14. What are assets in Google Ads?

Extra pieces that add to an ad, like sitelinks, callouts, structured snippets, images, prices, calls and promotions. Google used to call them extensions. They make the ad bigger and more useful, and they feed into Ad Rank.

15. What is a responsive search ad?

The standard search ad. You write up to 15 headlines and 4 descriptions, and Google tests combinations for each search. Expanded text ads were the older format, and new ones haven't been allowed since June 2022.

16. What is remarketing?

Showing ads to people who already visited your site or app, or who are on your customer list. In Google Ads it's done through audience segments built from your Google tag, app data or uploaded lists. It's usually the cheapest conversions in an account.

17. What is Google Merchant Center?

Where a business uploads its product feed, with titles, prices, images and stock, for Shopping ads, Performance Max and free product listings on Google. If the feed is wrong, the ads are wrong.

18. What is the Google tag?

The code on your website that sends visits and conversions to Google Ads and Google Analytics. Without it, Google can't see sales or build remarketing audiences, and automated bidding has nothing to learn from.

19. Which Google Ads tools have you used?

Name what you've opened and what you did. Google Ads itself, Keyword Planner for demand, Google Ads Editor for bulk changes, Merchant Center for feeds, and GA4 for what visitors do. A fresher can say "I used Keyword Planner to research keywords for a practice campaign". One thing I've noticed on my own account is that Keyword Planner shows search volumes as ranges, like 1K to 10K, when the account isn't spending.

20. Is there a Google Ads certification, and does it matter?

Google offers free certifications on Google Skillshop for Search, Display, Video, Shopping, Measurement and AI-powered performance ads. They show you know the basics. Interviewers care more about what you can explain and whether you've managed real spend, even a small budget of your own.

Back to all five sections

Keywords, ads and search campaign questions

21. How do you do keyword research for a search campaign?

Start from what buyers type, not what the brand calls its product. Pull ideas from Keyword Planner, the search terms of any existing campaigns, competitors' pages and customer reviews. Group them by intent, check volumes and suggested bids, and start with the highest-intent terms.

22. How do you group keywords into ad groups?

By theme and intent, so one set of ads fits every keyword in the group. "Vitamin C serum" and "vitamin C face serum" belong together. "Serum for acne" needs its own group with its own ads and landing page.

23. What is the search terms report, and how often do you read it?

The list of actual searches that triggered your ads. Read it at least weekly in a new account. It's where you find wasted spend to add as negatives, and good searches to add as keywords on purpose.

24. How does broad match work today?

Broad match uses the meaning of the keyword plus signals like the landing page, other keywords in the ad group and the user's recent searches. Google recommends pairing it with Smart Bidding, so the bidding can value each search. Without conversion data, broad match can waste money fast.

25. What is AI Max for Search?

An optional setting for Search campaigns, launched in 2025, that lets Google expand matching beyond your keywords, adapt ad text and choose the best landing page. Treat it like broad match. Useful with strong conversion data, risky without it. Google explains it in its AI Max help page.

26. What makes a good responsive search ad?

Headlines that each work on their own and in any order, with the keyword, the offer, proof and a call to action spread across them. Pin only what must always show, like a legal line, because pinning cuts the combinations Google can test.

27. What is ad strength?

Google's rating of how varied and relevant your responsive search ad's headlines and descriptions are, from poor to excellent. It's a guide to writing more variety. It doesn't decide the auction, so don't chase "excellent" at the cost of a clear message.

28. What is dynamic keyword insertion?

Code in an ad that swaps in the search keyword, so the headline matches what the person typed. It can lift CTR, but it can also produce odd or misleading ads, so use a sensible default text and check results.

29. Which assets would you add first to a new search campaign?

Sitelinks to key pages, callouts for selling points like free delivery or cash on delivery, structured snippets for product types, and images where eligible. For a D2C brand in India, prices and promotions around sale periods work well.

30. How do you choose location targeting?

Target where you deliver, and check the "presence" setting. "Presence or interest" also shows ads to people searching about a place from elsewhere, which wastes money for a brand that only ships within India. "Presence" means people regularly in or in your target locations.

31. What is an ad schedule?

Setting the days and hours an ad runs. Check performance by hour before cutting hours. With Smart Bidding, bids already adjust by time, so schedules matter most for business hours, like a call-only campaign.

32. Should you bid on competitor names?

You can bid on a competitor's brand name as a keyword in most countries, but trademark rules limit using their name in your ad text. These campaigns usually have low Quality Scores and high costs. Test small and judge on CPA.

33. Why separate brand and non-brand campaigns?

Brand searches convert cheaply because people already want you. Mixed with non-brand, they make the whole account look better than it is and hide what new-customer advertising actually costs. Separate them, and report them separately.

34. What makes a good landing page for a search ad?

It matches the ad's promise, loads fast on a phone, and has one clear action. For a product search, land on the product page, not the homepage. Landing page experience is one of the three parts of Quality Score.

35. How do you improve a low Quality Score?

Find which part is "below average" in the keyword columns. For expected CTR, write more specific ads. For ad relevance, split the ad group so the ads match the keywords. For landing page experience, send people to a faster, more relevant page.

36. What is the difference between search partners and the Display Network?

Search partners are other search sites that show your search ads. The Display Network is millions of websites and apps showing banner and responsive display ads. Search campaigns can include search partners. Display should run as its own campaign.

37. What is Google Ads Editor?

A free desktop app for making bulk changes offline and uploading them, like editing hundreds of ads or copying campaigns. It's faster than the web interface for big accounts.

38. What are ad customizers?

Features that change parts of an ad automatically, like a countdown to a sale ending or a price pulled from a data feed. They keep ads current without rewriting them.

39. What causes an ad to be disapproved?

A breach of Google's advertising policies, like misleading claims, restricted products or a broken landing page. The policy column shows the reason. Fix the issue and appeal, or edit the ad. Health, finance and alcohol have stricter rules.

40. How would you write ads for a festive sale in India?

Lead with the offer and its end date, use a countdown customizer, add promotion assets, and check stock and delivery dates before going live. Raise budgets before peak days, because CPCs climb around Diwali and big sale weekends.

Back to all five sections

Bidding, budgets and Quality Score questions

41. What is the difference between manual and automated bidding?

With manual CPC, you set each bid yourself. With automated bidding, Google sets the bid for each auction using signals you can't see, like device, location, time and the person's past behaviour. Most accounts now run on automated bidding once they have conversion data.

42. What are the Smart Bidding strategies?

Target CPA, Target ROAS, Maximise conversions and Maximise conversion value. They use your conversion data to bid for each auction. Maximise clicks is automated but not Smart Bidding, because it doesn't optimise for conversions.

43. What happened to Enhanced CPC?

Enhanced CPC adjusted manual bids up or down based on the chance of a conversion. Google began retiring it for Search and Display campaigns in 2025, so don't present it as a current strategy for new campaigns.

44. When would you use Target CPA versus Target ROAS?

Target CPA when every conversion is worth about the same, like a lead form. Target ROAS when conversions have different values, like an ecommerce store with ₹500 and ₹5,000 orders. Target ROAS needs accurate order values passed into Google Ads.

45. How do you set a Target CPA for a new campaign?

Start near the CPA the campaign already achieves, not your dream number. Setting it far below reality starves the campaign of traffic. Lower it in small steps once it's stable.

46. What is break-even ROAS?

The ROAS at which ads stop losing money. It's 1 divided by your margin after product cost, shipping and payment fees. If you keep 40% of each sale, break-even ROAS is 1 ÷ 0.40 = 2.5. A 3x ROAS on that product is a small profit, not a big win.

47. Why might a brand accept a ROAS below break-even on first orders?

Because a customer's value isn't only the first order. If a new customer reorders three times in a year, the first order can break even or lose a little and the customer still makes money. This only works if the brand actually brings people back, which is a retention question as much as an ads one. A customer lifetime value calculator helps set the number.

Listening for. That you know the difference between ROAS on the first order and profit over a customer's life.

48. How does the daily budget work?

You set an average daily budget. Google can spend up to twice that on a single day when demand is high, but won't charge more than about 30.4 times the daily budget in a month. Google explains this in its budget help page.

49. What is impression share?

The share of impressions you got out of all you were eligible for. "Lost to budget" means you ran out of money. "Lost to rank" means your bids or ad quality are too low. The fix is different for each.

50. What replaced average position?

Google removed average position in 2019. Use top impression rate and absolute top impression rate, which show how often your ad appeared above the organic results and in the very first spot.

51. What is the learning period for Smart Bidding?

After you launch a strategy or make a big change, Google needs time to learn. Google says this can take up to about 50 conversions or three conversion cycles. Results swing in that time, so avoid judging or editing too early.

52. What is a portfolio bid strategy?

One bid strategy shared across several campaigns, so they pursue one target together. It helps when individual campaigns don't have enough conversions to learn on their own.

53. What is a shared budget?

One budget split across several campaigns, letting Google move money to whichever needs it. It's useful for small, related campaigns, and harder to control when campaigns have different goals.

54. Do bid adjustments still matter?

With Smart Bidding, most bid adjustments, like device or location, are ignored, because the strategy already adjusts every bid. A -100% device adjustment still works to exclude a device. With manual bidding, adjustments still apply.

55. How do you allocate a budget across campaigns?

Fund what's proven first, usually brand search and best-selling products, then high-intent non-brand, then prospecting like Demand Gen. Move money monthly toward campaigns with the best cost per new customer, and keep 10 to 20% for tests.

56. What is Customer Match?

Uploading your customer emails and phone numbers, which Google matches to signed-in users, to show them ads or to exclude them. Use it to win back lapsed buyers, sell to existing ones, or keep current customers out of new-customer campaigns. It needs consent and must follow Google's policy.

57. What is a new customer acquisition goal?

A setting for Performance Max, Shopping and Search that tells Google to bid higher for new customers, or to bid only for them. It needs your customer lists or tags so Google knows who's new.

58. How do you bid when margins differ by product?

Pass the real order value, or better, the profit, into Google Ads, and group products by margin into separate campaigns or listing groups with their own ROAS targets. A ₹3,000 bestseller with 60% margin can carry a lower ROAS target than a ₹500 item with 20%.

59. Why do CPCs rise around Diwali in India?

More advertisers bid for the same searches in the weeks before Diwali and during big sale events, so auctions get more competitive. Plan budgets and creatives early, lift targets carefully, and watch CPA rather than CPC.

60. How would you explain a ROAS target to a founder?

In rupees. "For every ₹100 we spend on Google, we need ₹250 in sales just to break even after product, shipping and payment costs. We're at ₹320, so we make about ₹28 per ₹100 spent on the first order, before repeat orders."

Back to all five sections

Shopping, Performance Max, YouTube and Demand Gen questions

61. How do Shopping campaigns work?

Google matches searches to products in your Merchant Center feed and shows them with an image, price and store name. You don't pick keywords, so the feed is your targeting. Product titles matter more than anything else.

62. How do you optimise a product feed?

Front-load titles with what people search for, like brand, product type, key attribute and size. Use accurate categories, high-quality images, correct prices and stock, and GTINs where products have them. Fix disapprovals in Merchant Center quickly.

63. What are free listings?

Product listings that appear on Google's Shopping tab and other surfaces at no cost, from the same Merchant Center feed. They're a reason to keep a clean feed even before running paid Shopping.

64. What is Performance Max?

A campaign type that runs across Search, YouTube, Display, Discover, Gmail and Maps from one campaign, with Google's automation choosing where to show. You give it a goal, creative assets, a product feed if you have one, and audience signals.

65. What are asset groups and audience signals?

Asset groups are the sets of headlines, images, videos and descriptions Performance Max mixes into ads, usually one per theme or product category. Audience signals are hints, like your customer lists or website visitors, that help it start. They guide the campaign, but don't limit who sees the ads.

66. What are the main risks of Performance Max?

Less control and less visibility. It can spend on brand searches and remarketing that would have converted anyway, which flatters its ROAS. Use brand exclusions, feed in new-customer goals, check its search term and placement insights, and test it against a holdout.

67. What happened to Smart Shopping and Local campaigns?

Google upgraded both into Performance Max in 2022. If a guide describes Smart Shopping as a current campaign type, it's out of date.

68. What is Demand Gen?

A campaign type for visual ads on YouTube (including Shorts), Discover and Gmail, built to create demand among people not yet searching. It replaced Discovery campaigns. Google explains the change in its Demand Gen upgrade guide.

69. What are the main YouTube ad formats?

Skippable in-stream ads that play before or during videos, non-skippable in-stream ads, bumper ads of up to 6 seconds, and in-feed ads in search results and the home feed. Shorts ads run between short videos.

70. How do you judge a YouTube or Demand Gen campaign?

Not on last-click sales alone, because these campaigns create demand that converts later through search. Look at view-through and engaged-view conversions, lift in brand searches, and new-customer CPA over a longer window.

71. What is the difference between Search and Shopping for a D2C brand?

Search shows text ads for keywords you choose. Shopping shows product images and prices matched from your feed. Shopping usually wins for product searches, because people see the product before clicking. Search is better for problem and category searches with no single product.

72. Should a new D2C brand start with Performance Max or Shopping?

With very little conversion data, standard Shopping or a feed-only Performance Max gives more control while you learn. Once conversions are flowing, Performance Max can usually scale better. Either way, keep a separate brand search campaign.

73. What is a listing group?

The way products are divided inside a Shopping or Performance Max campaign, by category, brand, product type or custom labels. Custom labels, like "high margin" or "bestseller", let you set different targets for different products.

74. How do App campaigns work?

You give Google text, images, videos and a goal, like installs or in-app actions, and it runs ads across Search, Play, YouTube and Display. For apps, optimise for an action after the install, like a first purchase, not just installs.

75. What is a video action campaign?

It was a YouTube campaign type built for conversions. Google has been moving these into Demand Gen, so describe Demand Gen as the current option.

76. What does a Display campaign do best?

Reach and remarketing across millions of websites and apps, cheaply. It rarely wins on first-time purchase CPA, so use it for remarketing and awareness, with tight placement exclusions.

77. What are placement exclusions?

Lists of sites, apps or YouTube channels where you don't want your ads. Exclude kids' content, games and low-quality apps that bring accidental clicks.

78. How do Performance Max and Search work together?

If a search term exactly matches a keyword in a Search campaign, the Search campaign usually wins. Otherwise Performance Max can serve on search too. Use Search for terms you want full control over, like brand, and let Performance Max cover the rest.

79. How would you set up Shopping for a D2C skincare brand with 40 products?

Clean the feed first, with titles like "Brand Vitamin C Face Serum 30 ml for Dull Skin". Add custom labels for margin and bestsellers. Start one Shopping or feed-led Performance Max campaign split by margin, add brand exclusions, set a ROAS target near break-even, then let the data decide.

80. What changed when Google Optimize shut down?

Google Optimize, the free A/B testing tool, shut down in September 2023. Landing page tests now run through third-party tools or Google Ads experiments. Any guide that tells you to test landing pages in Google Optimize is out of date.

Back to all five sections

Tracking, analytics and scenario questions for 2 to 5 years

81. How do you set up conversion tracking?

Install the Google tag, create conversion actions for what matters, like purchases, leads and sign-ups, and pass the order value with each purchase. Or import key events from GA4. Mark only real business goals as primary conversions, so bidding doesn't optimise for page views.

82. What are enhanced conversions?

A feature that sends hashed customer details, like email or phone, from your conversion page to Google, so it can match conversions that cookies miss. It improves measurement and bidding, especially as browsers limit cookies.

83. What is offline conversion import?

Uploading conversions that happen outside the website, like a sale closed on a call or a lead that became a customer, back into Google Ads. It lets bidding optimise for real customers, not just form fills.

84. Which attribution models does Google Ads offer?

Data-driven attribution, the default, and last click. Google removed first click, linear, time decay and position-based models in 2023. Any guide listing all six as current is out of date.

85. Why do Google Ads and GA4 report different conversions?

Different attribution models, different time zones, conversions credited to the click date in Google Ads versus the conversion date in GA4, consent and ad blockers, and views versus clicks. Expect a gap. Explain it rather than force them to match.

86. What is Consent Mode?

A Google feature that changes how tags behave based on whether a visitor gave consent for cookies, and models conversions for those who didn't. It's required for advertisers with users in the European Economic Area. Indian sites with EU visitors need it too.

87. "Our CPA doubled this week. Walk me through what you check."

First, is it real. Check that conversion tracking is still firing, and compare Google Ads conversions with real orders. Then split it. Did CPC rise (competition, auction insights) or conversion rate fall (landing page, stock, price, site speed)? Then find where it happened by campaign, device and search term, and fix the biggest piece first.

88. "Conversions dropped the day after we changed the website. What do you check?"

Tracking, before anything else. A site change often removes the Google tag or changes the thank-you page that counted the sale. If real orders in the store backend are fine, it's a tracking problem, not a performance one.

89. "Performance Max shows a 9x ROAS. Can we move all our budget there?"

Not before checking what it's spending on. A ROAS that high often means it's picking up brand searches and returning customers who'd have bought anyway. Exclude brand, check new-customer share, and test the move in stages against a holdout before trusting it.

90. "Our search campaign is limited by budget. Do we add more money?"

Only if the extra spend comes at an acceptable CPA. Check impression share lost to budget, then the CPA of the marginal clicks. Often cutting poor search terms, hours and locations frees enough budget without adding money.

91. "Clicks are high but sales are low. What's wrong?"

The problem is usually after the click, or in who's clicking. Check search terms for irrelevant traffic, the landing page match with the ad, mobile speed, price and delivery charges shown late, and whether tracking records sales at all.

92. "We spend ₹1 lakh a month. How would you set up Google Ads for a new D2C brand?"

Brand search first, small and cheap. Then a Shopping or feed-led Performance Max campaign on the best sellers with most of the budget, and a small generic search campaign on high-intent terms. Set up conversion tracking with order values before spending. Review search terms weekly and move money to what makes profit after 3 to 4 weeks.

93. "Quality Score dropped from 7 to 4 on our main keyword. Why?"

Check which part fell. If landing page experience dropped, the page changed or slowed down. If expected CTR dropped, a competitor may have better ads or the ad copy changed. If ad relevance dropped, the ad no longer matches the keyword. Fix that part.

94. "A competitor started bidding on our brand name. What do you do?"

Make sure your own brand campaign runs with strong ads and assets, so you hold the top spot cheaply. Check whether they use your trademark in their ad text, which you can complain about through Google's trademark process. Don't panic-raise bids beyond what brand clicks are worth.

95. "Our account has 50 campaigns with tiny budgets. What would you change?"

Consolidate. Automated bidding needs conversion volume to learn, and 50 small campaigns starve it. Merge campaigns with the same goal and similar margins, keep brand separate, and use fewer, stronger ad groups.

96. "How would you test whether Google Ads is actually adding sales?"

Run a holdout test. Pause or cut ads in some regions or for a set period, and compare total sales against similar regions or periods that kept running. Google Ads' own conversion lift studies or geo experiments can do this. It tells you what the ads add beyond sales that would have happened anyway.

97. "The founder wants a 10x ROAS. What do you say?"

Ask what the ROAS is for. Show the break-even ROAS from the margins, and explain that pushing ROAS very high usually means spending only on brand and returning customers, which shrinks growth. Agree a target tied to profit and new customers instead.

98. "Leads from our form are mostly junk. How do you fix it?"

Feed real quality back. Import which leads became customers through offline conversions, and bid for those, not form fills. Add qualifying questions to the form, tighten keywords and negatives, and make the ad say who the offer is for.

99. "How do you report Google Ads results to a founder?"

On one page, in rupees. Spend, new customers, cost per new customer, revenue and profit after ads, split brand from non-brand, compared with last month and last year. Add what you changed and what you'll test next. Leave CTR and impressions for the appendix.

100. "What happens after the click that a Google Ads manager should care about?"

Whether the customer comes back. Google Ads usually pays for the first order, and a brand makes its money on the second and third. A good paid marketer knows the repeat rate and customer lifetime value, works with the CRM team, and keeps existing customers out of new-customer campaigns with Customer Match. My guide to repeat purchase rate benchmarks shows what normal looks like.

Back to all five sections

12 Google Ads answers other guides still get wrong

Interviewers use these to check whether a candidate's knowledge is current. Each was on at least one page ranking for "Google Ads interview questions" in October 2026.

What many guides say	What's true in 2026	Question
Google AdWords	Renamed Google Ads in 2018	1
Ad Rank is bid times Quality Score	Google uses bid, ad quality, thresholds, competition, search context and asset impact	5
CTR is impressions divided by clicks	It's clicks divided by impressions	8
Broad match modifier is a match type	Retired in 2021	12
Negative match is a match type	Negatives are a keyword type	13
Ad extensions	Now called assets	14
Write expanded text ads	Can't be created since June 2022. Use responsive search ads	15
Enhanced CPC is a current bid strategy	Being retired for Search and Display since 2025	43
Check average position	Removed in 2019. Use top and absolute top impression rate	50
Smart Shopping and Local campaigns	Upgraded into Performance Max in 2022	67
Discovery campaigns	Replaced by Demand Gen	68
Test landing pages in Google Optimize	Google Optimize shut down in September 2023	80

Sources: Google Ads Help on Ad Rank, responsive search ads, Enhanced CPC, Performance Max and the Demand Gen upgrade.

Take-home Google Ads assignment: a sample with a marking guide

Many companies send a task after the first round. Here's a typical one, with how I'd mark it.

The brief. "A D2C skincare brand spends ₹3 lakh a month on Google Ads at a blended ROAS of 3x. Margin after product, shipping and payment costs is 45%. Here's an export of the account. In two pages, tell us whether the account is profitable, what you'd change first, and how you'd measure it."

What a strong answer does	Marks
Works out break-even ROAS (1 ÷ 0.45, about 2.2x) and says what 3x means in rupees	20
Splits brand from non-brand before judging performance	20
Checks tracking and order values before trusting the numbers	20
Ranks changes by impact, with a reason for each	20
Proposes a way to measure what ads add, like a holdout, and thinks about repeat customers	20

What loses marks. Reporting CTR and impressions as results, "increase the budget" with no reason, and ignoring brand searches.

FAQ

How should I prepare for a Google Ads interview? Learn the current campaign types, Smart Bidding and conversion tracking, practise the ROAS, CPA and break-even maths out loud, and if possible run a small campaign of your own. Be ready to explain one result in rupees.

What Google Ads questions are asked of freshers? What Google Ads and PPC are, how the auction and Ad Rank work, Quality Score, match types and negative keywords, CTR, CPC, CPA and ROAS, campaign types, and which tools you have used.

What is asked in a Google Ads interview for 2 to 3 years of experience? Mostly scenarios. Why CPA rose, how to judge Performance Max, how to fix conversion tracking after a site change, how to set ROAS targets from margins, and how to report results to a founder, plus a take-home account audit.

Is the Google Ads certification worth it? It is free on Google Skillshop and shows you know the basics, which helps a fresher. Interviewers care more about whether you can explain real results and the maths behind them.

What does PPC mean in an interview? In digital marketing, PPC means pay-per-click advertising, mainly Google Ads. In manufacturing, PPC means production planning and control, which is a different job entirely.

Is Google Ads a good career in India? It is a common entry point into performance marketing at agencies and D2C brands. People who understand profit, not just clicks, and who can work with retention and analytics teams, tend to grow fastest.

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Open to CRM and retention roles as well as paid ads? Fewer candidates go for them, and my CRM Career Launchpad has nine self-study kits for a first CRM job, free for the first 100 learners.