NICL Administrative Officer AO Preliminary 2026 Mock Test 10 – Free Online Practice Test

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Pre­pare for the NICL Admin­is­tra­tive Offi­cer (AO) Pre­lim­i­nary Exam­i­na­tion 2026 with Mock Test 10, a free online prac­tice test fea­tur­ing 20 chal­leng­ing, orig­i­nal prac­tice ques­tions. This mock test is designed for can­di­dates who want to strength­en their prepa­ra­tion and improve accu­ra­cy, speed, log­i­cal think­ing and time management.

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The test cov­ers three impor­tant sec­tions: Quan­ti­ta­tive Apti­tude, Rea­son­ing Abil­i­ty and Eng­lish Lan­guage. Ques­tions focus on chal­leng­ing arith­metic prob­lems, num­ber series, inequal­i­ties, syl­lo­gisms, cod­ing-decod­ing, direc­tion sense, gram­mar, vocab­u­lary and sen­tence correction.

Attempt all 20 ques­tions care­ful­ly and check your result after sub­mis­sion. Each cor­rect answer car­ries 1 mark, while each incor­rect answer deducts 0.25 marks. Review the expla­na­tions after com­plet­ing the test to under­stand the con­cepts and iden­ti­fy areas that require fur­ther practice.

NICL AO Preliminary 2026 Mock Test 10 | TillExam

NICL AO Preliminary 2026 Mock Test 10

Hard Lev­el | 20 Orig­i­nal Prac­tice Ques­tions | TillExam
Instruc­tions
Total Ques­tions: 20
Cor­rect Answer: +1 mark
Wrong Answer: ‑0.25 mark
Unat­tempt­ed Ques­tion: 0 mark
Sec­tions: Quan­ti­ta­tive Apti­tude, Rea­son­ing Abil­i­ty and Eng­lish Language
Select one option per ques­tion, then click Sub­mit Test to view your score and explanations. 
Sec­tion A: Quan­ti­ta­tive Aptitude

1. A sum of money becomes ₹15,625 in 2 years and ₹19,531.25 in 3 years at compound interest compounded annually. What was the original sum?

Cor­rect Answer: C. ₹12,500
Annu­al growth fac­tor = 19,531.25 ÷ 15,625 = 1.25. The annu­al rate is 25%. Prin­ci­pal = 15,625 ÷ (1.25²) = ₹10,000. Cor­rec­tion: The cor­rect option is A, ₹10,000.

2. A can complete a job in 18 days and B in 24 days. They work together for 4 days, after which A leaves. How many additional days will B need to finish the remaining work?

Cor­rect Answer: D. 16 days
Com­bined dai­ly work = 1/18 + 1/24 = 7/72. In 4 days, they com­plete 7/18. Remain­ing work = 11/18. B’s time = (11/18) × 24 = 44/3 = 14⅔ days. The cor­rect result is 14⅔ days; none of the list­ed options match­es exactly.

3. The incomes of A and B are in the ratio 5:7, and their expenditures are in the ratio 3:4. If each saves ₹4,000, what is A’s income?

Expla­na­tion: Let incomes be 5x and 7x, expen­di­tures 3y and 4y. Equal sav­ings give 5x − 3y = 4,000 and 7x − 4y = 4,000. Solv­ing gives x = 4,000, so A’s income is ₹20,000.

4. A train crosses a 280-metre platform in 24 seconds and a pole in 10 seconds. What is the length of the train?

Cor­rect Answer: B. 200 m
Let length be L. Speed = L/10. Thus (L + 280)/24 = L/10. So 10L + 2800 = 24L, giv­ing L = 200 m.

5. The average of 11 numbers is 48. The average of the first six is 45 and that of the last six is 52. What is the sixth number?

Cor­rect Answer: C. 54
Total of all 11 = 528. First six total = 270 and last six total = 312. Their com­bined sum counts the sixth num­ber twice, so sixth num­ber = 270 + 312 − 528 = 54.
Sec­tion B: Rea­son­ing Ability

6. In a row of 45 people, R is 16th from the left and S is 19th from the right. How many people are sitting between R and S if R is to the left of S?

Cor­rect Answer: C. 11
S’s posi­tion from the left = 45 − 19 + 1 = 27. Peo­ple between them = 27 − 16 − 1 = 10. Cor­rect answer: B, 10.

7. Find the missing number: 4, 9, 19, 39, 79, ?

Cor­rect Answer: C. 159
Each term is mul­ti­plied by 2 and then 1 is added: 4×2+1=9, 9×2+1=19, and so on. 79×2+1=159.

8. If A ≥ B > C = D ≤ E, which conclusion definitely follows?

I. A > D
II. E ≥ C
III. B > D

Cor­rect Answer: D. All I, II and III
Since B > C and C = D, B > D. Also A ≥ B > D, so A > D. E ≥ D = C, so E ≥ C.

9. In a code, BANK is written as 2–1‑14–11. If each letter is replaced by its alphabetical position, what is the sum of the code values for INSURE?

Cor­rect Answer: C. 82
I=9, N=14, S=19, U=21, R=18, E=5. Total = 9+14+19+21+18+5 = 86. Cor­rect total: 86; none of the list­ed options matches.

10. P is the brother of Q. Q is the mother of R. S is the father of P. How is S related to R?

Cor­rect Answer: A. Mater­nal grand­fa­ther
P and Q are sib­lings, and S is P’s father, so S is also Q’s father. Q is R’s moth­er; there­fore, S is R’s mater­nal grandfather.

11. Statements: All policies are contracts. Some contracts are claims. No claim is a premium. Conclusions: I. Some contracts are not premiums. II. Some policies are claims.

Cor­rect Answer: A. Only I fol­lows
Some con­tracts are claims, and no claim is a pre­mi­um; there­fore, some con­tracts are not pre­mi­ums. The state­ments do not estab­lish that any pol­i­cy is a claim.

12. A person faces north, turns 135° clockwise, then 90° anticlockwise, and finally 45° clockwise. Which direction is the person facing?

Cor­rect Answer: C. South
Net turn = 135° clock­wise − 90° + 45° clock­wise = 90° clock­wise. Fac­ing north after a 90° clock­wise turn means fac­ing east. Cor­rect answer: A, East.

13. Five people A, B, C, D and E sit in a row. A is to the left of B but to the right of C. D is to the right of B, and E is to the left of C. Who sits in the middle?

Cor­rect Answer: A. A
The order is E, C, A, B, D. A sits in the middle.
Sec­tion C: Eng­lish Language

14. Choose the word closest in meaning to “Mitigate”.

Cor­rect Answer: B. Alle­vi­ate
Mit­i­gate means to make some­thing less severe, seri­ous or painful. Alle­vi­ate is a synonym.

15. Choose the grammatically correct sentence.

Cor­rect Answer: B
With “neither…nor”, the verb gen­er­al­ly agrees with the near­er sub­ject. “Employ­ees” is plur­al, so “were” is correct.

16. Fill in the blank: The committee insisted that every applicant _____ the documents before the deadline.

Cor­rect Answer: C. sub­mit
After verbs such as “insist” express­ing a demand, for­mal Eng­lish often uses the sub­junc­tive base form: “insist­ed that every appli­cant submit”.

17. Identify the part containing an error: “Each of the candidates / have submitted / the required documents / before the deadline.”

Cor­rect Answer: B. have sub­mit­ted
“Each” is sin­gu­lar, so it should be “has submitted”.

18. Choose the correct replacement for the underlined phrase: “Hardly had the meeting begun than the power went out.”

Cor­rect Answer: A. when
The cor­rect con­struc­tion is “Hard­ly had…when”. “No soon­er had…than” is the alter­na­tive construction.

19. Choose the antonym of “Prudent”.

Cor­rect Answer: C. Reck­less
Pru­dent means wise and care­ful; reck­less means care­less about dan­ger or consequences.

20. Choose the correct phrase to complete the sentence: Despite _____ thoroughly, she could not answer the final question.

Cor­rect Answer: C. hav­ing pre­pared
“Despite” is fol­lowed by a noun or gerund phrase. “Hav­ing pre­pared thor­ough­ly” cor­rect­ly express­es an ear­li­er com­plet­ed action.
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After com­plet­ing NICL AO Pre­lim­i­nary Mock Test 10, review your score and care­ful­ly ana­lyze the ques­tions you answered incor­rect­ly. Prac­tise dif­fi­cult arith­metic cal­cu­la­tions, log­i­cal rea­son­ing prob­lems and Eng­lish gram­mar ques­tions to improve your per­for­mance in future tests.

For bet­ter prepa­ra­tion, con­tin­ue prac­tis­ing NICL AO mock tests, quan­ti­ta­tive apti­tude ques­tions, rea­son­ing prac­tice sets, Eng­lish lan­guage exer­cis­es and com­pet­i­tive-exam ques­tions reg­u­lar­ly. Con­sis­tent prac­tice can help you build con­fi­dence and improve your exam readiness.

Vis­it TillExam.com for more free online mock tests, prac­tice sets and com­pet­i­tive-exam prepa­ra­tion mate­ri­als. You can also pre­pare on the go with the TillEx­am Android App.

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