A daily security search — one-time passwords on banking and logins. This page has 100 important questions and answers. Original explainer for daily search — not a government login or live tracker.
An OTP (one-time password) is a short code, usually 4–8 digits, that works once for a short time. Banks and apps send it by SMS, email, or an authenticator app so that a stolen password alone is not enough. It is a second factor — something you have (the phone) plus something you know.
Nobody honest from a bank will ask you to read an OTP aloud. If you type an OTP into a fake site, the thief completes the payment. Authenticator apps (Google Authenticator, bank tokens) beat SMS when a SIM can be swapped.
OTPs expire. If you did not start a login or payment, do not share the code. This is not the same as your UPI PIN or ATM PIN.
100 important questions. Quick 10 is a random set; Full set plays every question.
Your score
100 questions and answers
Each item is a 4-option MCQ. Open a question, tap A–D. Green is correct, red is wrong. Original explainers — not copied match reports.
1. The official source for “what is otp” (learn desk, item 13) is
Tap A, B, C or D.
Answer: B) the authority or standard named on this page’s explainer
GKSchools English practice is original — not an official script.
2. The official source for “what is otp” (learn desk, item 14) is
Tap A, B, C or D.
Answer: A) the authority or standard named on this page’s explainer
GKSchools English practice is original — not an official script.
3. The official source for “what is otp” (learn desk, item 15) is
Tap A, B, C or D.
Answer: B) the authority or standard named on this page’s explainer
GKSchools English practice is original — not an official script.
4. The official source for “what is otp” (learn desk, item 16) is
Tap A, B, C or D.
Answer: D) the authority or standard named on this page’s explainer
GKSchools English practice is original — not an official script.
5. The official source for “what is otp” (learn desk, item 17) is
Tap A, B, C or D.
Answer: C) the authority or standard named on this page’s explainer
GKSchools English practice is original — not an official script.
6. The official source for “what is otp” (learn desk, item 18) is
Tap A, B, C or D.
Answer: B) the authority or standard named on this page’s explainer
GKSchools English practice is original — not an official script.
7. The official source for “what is otp” (learn desk, item 19) is
Tap A, B, C or D.
Answer: A) the authority or standard named on this page’s explainer
GKSchools English practice is original — not an official script.
8. The official source for “what is otp” (learn desk, item 20) is
Tap A, B, C or D.
Answer: A) the authority or standard named on this page’s explainer
GKSchools English practice is original — not an official script.
9. The official source for “what is otp” (learn desk, item 21) is
Tap A, B, C or D.
Answer: B) the authority or standard named on this page’s explainer
GKSchools English practice is original — not an official script.
10. The official source for “what is otp” (learn desk, item 22) is
Tap A, B, C or D.
Answer: D) the authority or standard named on this page’s explainer
GKSchools English practice is original — not an official script.
11. The official source for “what is otp” (learn desk, item 23) is
Tap A, B, C or D.
Answer: C) the authority or standard named on this page’s explainer
GKSchools English practice is original — not an official script.
12. The official source for “what is otp” (learn desk, item 24) is
Tap A, B, C or D.
Answer: D) the authority or standard named on this page’s explainer
GKSchools English practice is original — not an official script.
13. The official source for “what is otp” (learn desk, item 25) is
Tap A, B, C or D.
Answer: C) the authority or standard named on this page’s explainer
GKSchools English practice is original — not an official script.
14. The official source for “what is otp” (learn desk, item 26) is
Tap A, B, C or D.
Answer: A) the authority or standard named on this page’s explainer
GKSchools English practice is original — not an official script.
15. The official source for “what is otp” (learn desk, item 27) is
Tap A, B, C or D.
Answer: B) the authority or standard named on this page’s explainer
GKSchools English practice is original — not an official script.
16. The official source for “what is otp” (learn desk, item 28) is
Tap A, B, C or D.
Answer: C) the authority or standard named on this page’s explainer
GKSchools English practice is original — not an official script.
17. The official source for “what is otp” (learn desk, item 29) is
Tap A, B, C or D.
Answer: D) the authority or standard named on this page’s explainer
GKSchools English practice is original — not an official script.
18. The official source for “what is otp” (learn desk, item 30) is
Tap A, B, C or D.
Answer: C) the authority or standard named on this page’s explainer
GKSchools English practice is original — not an official script.
19. The official source for “what is otp” (learn desk, item 31) is
Tap A, B, C or D.
Answer: D) the authority or standard named on this page’s explainer
GKSchools English practice is original — not an official script.
20. The official source for “what is otp” (learn desk, item 32) is
Tap A, B, C or D.
Answer: B) the authority or standard named on this page’s explainer
GKSchools English practice is original — not an official script.
21. The official source for “what is otp” (learn desk, item 33) is
Tap A, B, C or D.
Answer: A) the authority or standard named on this page’s explainer
GKSchools English practice is original — not an official script.
22. The official source for “what is otp” (learn desk, item 34) is
Tap A, B, C or D.
Answer: B) the authority or standard named on this page’s explainer
GKSchools English practice is original — not an official script.
23. The official source for “what is otp” (learn desk, item 35) is
Tap A, B, C or D.
Answer: A) the authority or standard named on this page’s explainer
GKSchools English practice is original — not an official script.
24. The official source for “what is otp” (learn desk, item 36) is
Tap A, B, C or D.
Answer: C) the authority or standard named on this page’s explainer
GKSchools English practice is original — not an official script.
25. The official source for “what is otp” (learn desk, item 37) is
Tap A, B, C or D.
Answer: D) the authority or standard named on this page’s explainer
GKSchools English practice is original — not an official script.
26. The official source for “what is otp” (learn desk, item 38) is
Tap A, B, C or D.
Answer: A) the authority or standard named on this page’s explainer
GKSchools English practice is original — not an official script.
27. The official source for “what is otp” (learn desk, item 39) is
Tap A, B, C or D.
Answer: B) the authority or standard named on this page’s explainer
GKSchools English practice is original — not an official script.
28. The official source for “what is otp” (learn desk, item 40) is
Tap A, B, C or D.
Answer: C) the authority or standard named on this page’s explainer
GKSchools English practice is original — not an official script.
29. The official source for “what is otp” (learn desk, item 41) is
Tap A, B, C or D.
Answer: D) the authority or standard named on this page’s explainer
GKSchools English practice is original — not an official script.
30. The official source for “what is otp” (learn desk, item 42) is
Tap A, B, C or D.
Answer: B) the authority or standard named on this page’s explainer
GKSchools English practice is original — not an official script.
31. The official source for “what is otp” (learn desk, item 43) is
Tap A, B, C or D.
Answer: A) the authority or standard named on this page’s explainer
GKSchools English practice is original — not an official script.
32. The official source for “what is otp” (learn desk, item 44) is
Tap A, B, C or D.
Answer: B) the authority or standard named on this page’s explainer
GKSchools English practice is original — not an official script.
33. The official source for “what is otp” (learn desk, item 45) is
Tap A, B, C or D.
Answer: A) the authority or standard named on this page’s explainer
GKSchools English practice is original — not an official script.
34. The official source for “what is otp” (learn desk, item 46) is
Tap A, B, C or D.
Answer: C) the authority or standard named on this page’s explainer
GKSchools English practice is original — not an official script.
35. The official source for “what is otp” (learn desk, item 47) is
Tap A, B, C or D.
Answer: D) the authority or standard named on this page’s explainer
GKSchools English practice is original — not an official script.
36. The official source for “what is otp” (learn desk, item 48) is
Tap A, B, C or D.
Answer: A) the authority or standard named on this page’s explainer
GKSchools English practice is original — not an official script.
37. The official source for “what is otp” (learn desk, item 49) is
Tap A, B, C or D.
Answer: B) the authority or standard named on this page’s explainer
GKSchools English practice is original — not an official script.
38. The official source for “what is otp” (learn desk, item 50) is
Tap A, B, C or D.
Answer: A) the authority or standard named on this page’s explainer
GKSchools English practice is original — not an official script.
39. OTP stands for
Tap A, B, C or D.
Answer: A) one-time password
It should work only once.
40. An OTP is meant to prove
Tap A, B, C or D.
Answer: C) you control the phone or token right now
It is a second factor.
41. If a caller asks you to read an OTP
Tap A, B, C or D.
Answer: A) hang up — it is a scam pattern
Banks do not need your OTP to “secure” the account.
42. Authenticator-app codes
Tap A, B, C or D.
Answer: C) often resist SIM-swap better than SMS
Still keep the phone locked.
43. A UPI PIN is
Tap A, B, C or D.
Answer: C) not the same as an OTP
PIN is chosen; OTP is generated.
44. OTPs expire so that
Tap A, B, C or D.
Answer: C) a leaked old code dies
Request a new one if it times out.
45. Entering an OTP on a look-alike site
Tap A, B, C or D.
Answer: D) can finish a fraud payment
Check the URL and the merchant name.
46. An OTP is not
Tap A, B, C or D.
Answer: B) your permanent password
Do not reuse it as a PIN.
47. SMS OTP rides
Tap A, B, C or D.
Answer: A) the mobile number registered with the bank or app
A SIM swap steals that channel.
48. Email OTP rides
Tap A, B, C or D.
Answer: D) the mailbox on the account
A hacked inbox is enough for some logins.
49. An authenticator app generates
Tap A, B, C or D.
Answer: D) codes from a secret key on the device
You scanned a QR when you set it up.
50. Time-based OTPs (TOTP) usually last
Tap A, B, C or D.
Answer: B) about 30 seconds per code
The clock on the phone must be roughly right.
51. A voice-call OTP is
Tap A, B, C or D.
Answer: A) still a one-time code, just spoken
Do not repeat it to a second caller.
52. SIM-swap / SIM-jacking is
Tap A, B, C or D.
Answer: A) when a thief ports your number to their SIM
Authenticator apps survive that better.
53. A bank will not ask you to
Tap A, B, C or D.
Answer: C) read an OTP to “cancel a KYC hold”
That script is a classic steal.
54. WhatsApp forwards of your OTP
Tap A, B, C or D.
Answer: A) hand the login to the other person
There is no “safe share”.
55. A fake Google-form “verify refund” that wants OTP is
Tap A, B, C or D.
Answer: A) phishing
Type nothing.
56. Device binding plus OTP is
Tap A, B, C or D.
Answer: C) how many UPI apps prove the phone
Still do not dictate the SMS.
57. Transaction OTPs often include
Tap A, B, C or D.
Answer: B) a partial amount or merchant in the text
Read that line before you type the digits.
58. Login OTP vs payment OTP
Tap A, B, C or D.
Answer: D) are different intents — do not type a pay OTP into a login box on a weird site
The SMS says which.
59. Rate limits exist so that
Tap A, B, C or D.
Answer: A) bots cannot request infinite OTPs
Wait before you tap Resend.
60. An OTP that never arrives may mean
Tap A, B, C or D.
Answer: C) DND, a full inbox, roaming, or a wrong number on file
Update the number inside the official app.
61. International roaming SMS OTP
Tap A, B, C or D.
Answer: C) can fail; apps and TOTP travel better
Turn on roaming or use the app token.
62. A hardware token fob is
Tap A, B, C or D.
Answer: C) another second factor some offices issue
Do not photograph the codes.
63. Backup codes printed at setup are
Tap A, B, C or D.
Answer: C) emergency one-time passwords to store offline
Each dies after one use.
64. Push-notification “Approve login” is
Tap A, B, C or D.
Answer: A) a cousin of OTP — only approve if you just tried to sign in
A surprise prompt is a no.
65. This page is not
Tap A, B, C or D.
Answer: C) a bank security department
Reset factors inside the real app.
66. Reusing an old OTP
Tap A, B, C or D.
Answer: B) should fail
That is the “one-time” part.
67. A 6-digit code in a subject line can still be
Tap A, B, C or D.
Answer: D) phish if you did not start the action
Check the domain you type it into.
68. Screen-sharing with “support” while an OTP SMS is visible
Tap A, B, C or D.
Answer: B) is how remote thieves finish pays
Hang up and call the number on the card.
69. Family members asking for your banking OTP
Tap A, B, C or D.
Answer: C) are still a risk if their phone is gone later
Do the action yourself.
70. Email + SMS both requested can mean
Tap A, B, C or D.
Answer: C) the site wants two channels, or it is messy UX — still do not share either
One unused code still dies.
71. A “missed call OTP” product is
Tap A, B, C or D.
Answer: C) a different proof of number, not a PIN
Follow only the official app’s flow.
72. Changing your registered mobile should happen
Tap A, B, C or D.
Answer: A) inside the bank’s verified process, not via a Telegram helper
Expect a branch or video-KYC step sometimes.
73. OTP for Aadhaar e-sign is still
Tap A, B, C or D.
Answer: A) not something you read to a job-offer stranger
e-sign commits you legally.
74. A delivery agent needing an OTP to “complete the order you did not place”
Tap A, B, C or D.
Answer: D) is a common parcel-scam pattern
Do not share it.
75. Authenticator seed QR photos in your camera roll
Tap A, B, C or D.
Answer: C) are as powerful as the codes
Do not back them up to a public album.
76. Clock skew of many minutes can
Tap A, B, C or D.
Answer: A) make TOTP codes fail
Set automatic time.
77. A locked phone plus TOTP is
Tap A, B, C or D.
Answer: A) stronger than SMS on an unlocked cheap handset
Use a PIN/biometric on the device.
78. Phishers now use real-looking bank skins that ask OTP in the same second you get the SMS
Tap A, B, C or D.
Answer: B) so pause and check the URL
Official apps do not need a random Chrome page.
79. This explainer cannot
Tap A, B, C or D.
Answer: B) send or receive your codes
Your SMS inbox is not our server.
80. An OTP is weaker if
Tap A, B, C or D.
Answer: C) the SMS is shown on the lock screen for anyone nearby
Hide lock-screen previews for bank senders.
81. Work SSO “approve on phone” fatigue can
Tap A, B, C or D.
Answer: C) make people tap Yes on a hacker’s prompt
If you did not just log in, deny.
82. A second-hand phone may still
Tap A, B, C or D.
Answer: D) have someone else’s authenticator — factory reset first
Remove old Google accounts.
83. Bank OTPs are not
Tap A, B, C or D.
Answer: D) your UPI PIN
Do not “make them the same” as a habit you write down together.
84. If you typed an OTP on a fake site, next steps are
Tap A, B, C or D.
Answer: C) call the bank, freeze UPI/cards, change passwords
Speed matters.
85. A “customer care” number from a sponsored ad can be
Tap A, B, C or D.
Answer: A) a clone that asks OTP
Dial from the official app or the plastic.
86. Email OTP to a shared family inbox is
Tap A, B, C or D.
Answer: B) a shared key — treat it that way
Use a mailbox only you open for banking.
87. This page does not
Tap A, B, C or D.
Answer: A) replace your bank’s security tips PDF
When in doubt, hang up.
88. A QR that says “scan to receive OTP” on a lamp-post is
Tap A, B, C or D.
Answer: A) not a normal bank factor
Walk away.
89. The official source for “what is otp” (learn desk, item 1) is
Tap A, B, C or D.
Answer: D) the authority or standard named on this page’s explainer
GKSchools English practice is original — not an official script.
90. The official source for “what is otp” (learn desk, item 2) is
Tap A, B, C or D.
Answer: B) the authority or standard named on this page’s explainer
GKSchools English practice is original — not an official script.
91. The official source for “what is otp” (learn desk, item 3) is
Tap A, B, C or D.
Answer: A) the authority or standard named on this page’s explainer
GKSchools English practice is original — not an official script.
92. The official source for “what is otp” (learn desk, item 4) is
Tap A, B, C or D.
Answer: B) the authority or standard named on this page’s explainer
GKSchools English practice is original — not an official script.
93. The official source for “what is otp” (learn desk, item 5) is
Tap A, B, C or D.
Answer: A) the authority or standard named on this page’s explainer
GKSchools English practice is original — not an official script.
94. The official source for “what is otp” (learn desk, item 6) is
Tap A, B, C or D.
Answer: C) the authority or standard named on this page’s explainer
GKSchools English practice is original — not an official script.
95. The official source for “what is otp” (learn desk, item 7) is
Tap A, B, C or D.
Answer: D) the authority or standard named on this page’s explainer
GKSchools English practice is original — not an official script.
96. The official source for “what is otp” (learn desk, item 8) is
Tap A, B, C or D.
Answer: A) the authority or standard named on this page’s explainer
GKSchools English practice is original — not an official script.
97. The official source for “what is otp” (learn desk, item 9) is
Tap A, B, C or D.
Answer: B) the authority or standard named on this page’s explainer
GKSchools English practice is original — not an official script.
98. The official source for “what is otp” (learn desk, item 10) is
Tap A, B, C or D.
Answer: D) the authority or standard named on this page’s explainer
GKSchools English practice is original — not an official script.
99. The official source for “what is otp” (learn desk, item 11) is
Tap A, B, C or D.
Answer: C) the authority or standard named on this page’s explainer
GKSchools English practice is original — not an official script.
100. The official source for “what is otp” (learn desk, item 12) is
Tap A, B, C or D.
Answer: A) the authority or standard named on this page’s explainer
GKSchools English practice is original — not an official script.
