DRDO STA Computer Science Tier 1 Mock Test - 2 Free Online Test 2026

A mother is 3 times faster than her daughter. If the daughter completes a piece of work in 15 days, how long will it take for both mother and daughter to complete the same work?

Find the value of 13 + (1/3) of 81 - (1/4) of 192 + 23 of 16 ÷ 92.

Study the following table carefully and answer the related question.

Following table represents the three types of products A, B and C manufactured in a company during Five months.

In which of the following month there is a maximum percentage increase/decrease in the manufacturing of all three types of products together?

The ratio of heights of Asif and Bharat is 3:4 and the ratio of heights of Bharat and Chatur is 6:7. If the average of their heights is 175 cm, what is the height of Asif?

Aman donated 10% of his Savings to Charity and gave 15% of his savings to his sister. Of the remaining savings his gave 60% to his son and gave 80% of the still remaining saving to his daughter. If the sum of the money given to sister and the money left with Aman finally is Rs 84,000, what was his savings?

BANKER is coded as SFLOBC, how CLERK will be coded?

Identify the diagram that best represents the relationship among the given classes.

Children, naughty, energetic

(1)

(2)

(3)

(4)

In the Question, a statement is followed by two courses of action numbered I and II. Assume everything in the statement to be true, and decide which of the suggested courses of action logically follow(s) for pursuing.

Statement:

"New students of our college get frightened by ragging. The ragging prevalent in our college is also creating a bad name for our college".

Course of action:

I. The college authorities take stringent action against those who are involved.

II. A strict anti ragging law should be passed to control ragging in our college.

Select the odd letter/word/number from the given alternatives.

DIRECTIONS: Study the following information to answer the given questions

In a certain code:

‘swords hidden in area’ is written as ‘white black yellow red’

‘ready swords for attack’ is written as ‘grey pink red green’

‘hidden for own safety’ is written as ‘silver grey violet white’

‘own area under attack’ is written as ‘violet blue pink black’

‘black pink yellow’ could be a code for which of the following?

In each of the following questions, select the related word/letters/number from the given alternatives.

Encouragement : Victory : : Frustration : ?

DIRECTIONS: Which of the words in the following options can be formed using the letter of the given word?

CORRESPONDING

Pointing to a boy Neha said, ‘He is the son of my grandfather’s only child. How is she related to that boy?

In blanking operation clearance is provided on

_____________ are tiny organelles inside cells that are involved in releasing energy from food hence, gaining the tag, "Power house of Cell".

Who discovered the phenomena of radio activity?

Smallpox is caused by:

Heavy water is —

Which of the following are examples of Natural Gas Liquids?

Ex situ conservation is carried out in

What happens If an egg with shell is placed in a microwave oven?

Which of the following is used for removing air bubbles from glass during its manufacture ?

In the following question, a sentence has been given in Direct/Indirect speech. Out of the four alternatives suggested, select the one which best expresses the same sentence in Indirect/Direct speech.

Q. The Judge asked the accused if he had been caught red-handed.

In the following sentence, a part of the sentence is underlined. Below are given alternatives to the underlined part, which may improve the sentence. Choose the correct alternative. In case no improvement is needed, choose the alternative that indicates No improvement needed.

Q. All person in the world must pay attention to this fact.

In the following sentence, a part of the sentence is underlined. Below are given alternatives to the underlined part, which may improve the sentence. Choose the correct alternative. In case no improvement is needed, choose the option ‘No improvement’.

Q. When long the work had been finished and it was time for tea. 

In the following question, some part of the sentence may have errors. Find out which part of the sentence has an error and select the appropriate option. If a sentence is free from error, select 'No Error'. 

Q. Either the founders (1)/ or the investors has (2)/ taken this decision. (3)/ No error (4)

Choose the word SIMILAR in meaning to the given word.

Infringe

Direction: Read the following passages carefully and answer the question that follows.
Knowledge means knowing the things in an appropriate and better way. A man of knowledge can understand the circumstances more wisely, so can decide the things favorably. Knowledge inspired. confidence and courage to act at a right time. A man of knowledge possesses immense influence in society. He has the capacity to lead the society, mold the society in a positive direction and keeps away the society from the many social evils. A man of knowledge can turn the sleeping people into a thundering force. Whatever the inventions and discoveries are seen today. from needle to the jet planes. are the result of proper use of knowledge. Human being is the only creature who can use his brain wisely, rationally, selectively and can do wonders.

Q. What is the reformative activity of a man of knowledge according to the given passage?

Fill in the blanks.

Q. _______ rich he may get, he will never be satisfied. 

In the following question, some part of the sentence may have errors. Find out which part of the sentence has an error and select the appropriate option. If a sentence is free from error, select 'No Error'. 

Q. I am not sure if they (1)/ are aware in the new programme (2)/ implemented by the Government. (3)/ No error (4)