RBI Assistant | Preliminary Examination

RBI Assistant: full-length mock (100 questions)

A full-length RBI Assistant mock modelled on the Preliminary Examination: 100 original questions across English Language, Numerical Ability and Reasoning Ability, weighted towards moderate and hard, each with a worked solution.

Before you start

100 questions in 60 minutes, split 30 in English Language, 35 in Numerical Ability and 35 in Reasoning Ability, with each section locked to its own clock — a full-length paper modelled on the Preliminary Examination.
Each section has its own timer; once a section’s time is over it locks and you cannot return to it, exactly as the real prelims is administered.
Each question carries one mark; one fourth of a mark is deducted for a wrong answer, and unanswered questions carry no penalty.
The difficulty is deliberately weighted towards moderate and hard (about 77 of 100) so the set stays useful on repeat attempts. Every question is original with a worked solution shown after you submit.

Sections in this test

Section	Questions	Time
English LanguageEnglish Language	30	20 min
Numerical AbilityQuantitative Aptitude	35	20 min
Reasoning AbilityReasoning Ability	35	20 min

Sample questions with worked solutions

A few questions from this test, with the answer key and the method behind it. The full set of 100 runs under a timer, and every solution is on the analysis screen once you submit.

English Language · solved example

Find the segment that contains a grammatical error: (A) He is one of those leaders (B) who never hesitates (C) to admit (D) a mistake.

A
BCorrect
C
D
No error

Solution

In "one of those ... who", the verb is plural to agree with "leaders", so it should be "who never hesitate".

Quantitative Aptitude · solved example

Convert 90 km/h into metres per second.

9
19
25Correct
31
41

Solution

Multiply by 5/18: 90 × 5/18 = 25 m/s.

Reasoning Ability · solved example

9 : 81 :: 2 : ?

8
4Correct
9
3
5

Solution

The rule is: each is the square of the first. Applying it to 2 gives 4.

English Language · solved example

Find the segment that contains a grammatical error: (A) The jury were divided (B) in their opinion (C) but was announcing (D) the verdict soon.

A
B
CCorrect
D
No error

Solution

The verb must stay consistent with the plural sense used earlier ("were"), so "was announcing" should be "were announcing".

English Language · solved example

The proliferation of misinformation online poses a (1) threat to public discourse. Falsehoods, amplified by algorithms that (2) engagement over accuracy, can spread faster than careful corrections. The (3) of this problem lies not only in technology but in human psychology, for people tend to accept claims that (4) their existing beliefs. Any durable remedy must therefore (5) both better platform design and a citizenry equipped to (6) evidence critically.

In the passage above, choose the most appropriate word for blank (1).

gradual
grateful
gracious
graveCorrect
graceful

Solution

Misinformation poses a "grave" (serious) threat.

How this test is marked

Correct answer

Wrong answer

-0.25

Unanswered

Because a blank carries no penalty, guessing only pays when you can eliminate at least two options. The analysis screen after the test shows you exactly where guessing cost you marks.