RRB Technician | Computer Based Test for Technician Grade I Signal

RRB Technician: 30-question practice mock

A compact, single-clock RRB Technician practice mock: 30 original questions across General Science, Computer Aptitude, Mathematics, General Intelligence & Reasoning and General Awareness, each with a worked solution. One third of a mark is deducted for a wrong answer.

Before you start

30 questions in 30 minutes on a single clock — a short drill, not a full-length paper.
Each question carries one mark; one third of a mark is deducted for a wrong answer, and unanswered questions carry no penalty.
Every question is original, written to the RRB Technician pattern, with a worked solution shown after you submit.

Sections in this test

Section	Questions
General ScienceGeneral Science	6
Computer AptitudeComputer Aptitude	6
MathematicsMathematics	6
General Intelligence & ReasoningGeneral Intelligence & Reasoning	6
General AwarenessGeneral Awareness	6

Sample questions with worked solutions

A few questions from this test, with the answer key and the method behind it. The full set of 30 runs under a timer, and every solution is on the analysis screen once you submit.

General Science · solved example

Which gas is released by green plants during photosynthesis?

Carbon dioxide
Nitrogen
OxygenCorrect
Hydrogen

Solution

Plants take in carbon dioxide and release oxygen as a by-product of photosynthesis.

Computer Aptitude · solved example

LAN stands for:

Local Area NetworkCorrect
Large Access Network
Local Access Node
Linked Area Network

Solution

LAN stands for Local Area Network, connecting computers within a small area such as an office.

Mathematics · solved example

In an election between two candidates, the winner secured 60% of the valid votes and won by 900 votes. Find the total number of valid votes.

4000
4500Correct
4200
5000

Solution

The winner got 60% and the loser 40%, a margin of 20% of the votes. If 20% = 900, the total is 900 ÷ 0.20 = 4500.

General Intelligence & Reasoning · solved example

If 6 : 36, then 9 : ?

90
99
81Correct
72

Solution

36 is 6 squared, so the rule is n → n², giving 9² = 81.

General Awareness · solved example

The Tropic of Cancer passes through how many Indian states?

8Correct
9
6
7

Solution

The Tropic of Cancer passes through eight states: Gujarat, Rajasthan, Madhya Pradesh, Chhattisgarh, Jharkhand, West Bengal, Tripura and Mizoram.

How this test is marked

Correct answer

Wrong answer

-0.3333

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.