DRDO STA Computer Science Tier 1 Mock Test - 4 Free Online Test 2026

Which of the following is irrational?

What is the remainder when x²⁰ + x¹⁹ + x¹⁸ + x¹⁷ + x¹⁶ + x¹⁵ + x¹⁴ + x¹³ + x¹² + x¹¹ is divided by x⁹ + x⁸ + x⁷ + x⁶ + x⁵ + x⁴ + x³ + x² + x + 1

A man bought six different fruits, and, each fruit's quantity bought is different. Quantity of Papaya bought is less than that of Oranges as well as Mango. Quantity of Apples bought is less than both Kiwi and Banana. Quantity of Mango is more than only one fruits and that of oranges is more than at least two fruits. Apple's quantity is more than that of oranges. Which fruit's quantity is less than that of three fruits?

The angle of elevation of the top of a tower at a point on the ground is 30^o on walking 16 meters towards the tower, the angle of elevation becomes 60^o. Find the height of the tower.

If D is a point on the side AB of triangle ABC and DE is a line through D meeting AC at E such that ∠ADE = ∠ACB, then AB. AD is equal to:

If (a/b)^x−1 = (b/a)^x−3 ,then the value of x is:

With the increase in the price of pressure cooker by 20%, its sale decreases by 50%. How much of a shopkeeper will earn less or more income from the past?

In the given figure, the Circle represents Indian, Square represents Dancer and triangle represents Musicians. Find the region of Indian Musicians.

Which one of the following diagrams represent the correct relationship between DOCTORS, SURGEONS and NURSES.

In each of the questions given below, there are two statements followed by an inference. Mark the correct option accordingly.

(a) Collection of frequent flyer miles is not useful at all.

(b) All the airlines have their respective frequent flyer programmes.

Inference: It's okay not to enrol under frequent flyer programmes of any airline.

DIRECTIONS: In each of the following questions, choose the set of numbers out of the four options that is similar to the given set.

Given set : (63, 8, 3)

DIRECTIONS: Find the odd one out from the given alternatives.

In these questions, statements are given followed by two conclusions I and II. You have to consider both the statements to be true even if they seem to be at variance from commonly known facts. You have to decide which of the given conclusions is/are definitely drawn from the given statements. Select answer as: (A) If only I follows (B) If only II follows (C) If neither I nor II follows (D) If both I and II follows

Statements :

All boys are girls.

No girl is a father.

Conclusions :

I. All girls are boys.

II. No boy is a father

Directions

Given below is a statement followed by 2/3 Assumptions. An assumption is something not written directly but can be considered as the implicit understanding before writing any text, document or writing. Choose the implicit assumption in the following question:

Statement :

Like a mad man,

I decided to follow him.

Assumptions :

I. I am not a mad man.

II. I am a mad man.

In the following question, select the related letter/word/number from the given alternatives.

Hooghly : Jute :: Ahmedabad : ?

From the given alternatives, according to dictionary, which word will come at FOURTH position?

1- Camera

2- Candy

3- Candle

4- Camel

5- Cactus

If every Sunday of any month is on fourth, eleventh eighteenth and twenty fifth, then which day will be the last day of the month if first day of the month is Thursday ?

Lucas Test is associated with….?

A body moving in a circular path with constant speed has

Stainless steel is an alloy of ____

If an object is placed at between F and 2F in front of a Convex Lens, then the image formed will be

Na+ The number of electrons in is-

When CaC₂ is heated in atmospheric nitrogen in an electric furnance the compound formed is ________

When a Red Glass Plate and a Blue Glass plate combined, it will transmit ______?

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. ''Will you marry me?'', Hiten said to Deepa.

Direction: Read the following passages carefully and answer the question that follows.
"Cloning is an advanced technological invention for producing a genetic twin of a living thing, an organism that starts life with the same genes as its parents. In mammals, DNA is taken from an adult animal and then it is inserted into an egg cell from another animal. This egg then divides into an embryo. The embryo is then transplanted into a surrogate mother and grown to term. This process has worked in animals like cows, sheep, goats, mice, pigs, rats, cat, monkeys, and horses." The opponents of human cloning say that an embryo at any stage of development is a human life. worthy of protection and any kind of research that entails destroying an embryo is immoral, unethical, no matter how worthy the intent may be. It involves using human beings as means; it turns human life into a commodity and fosters a culture of dehumanization.

Q. What does a 'surrogate mother' mean?

In the following question, out of the four alternatives, select the alternative which will improve the bracketed part of the sentence. In case no improvement is needed, select "no improvement".

Q. The world economy is changing at a (rapidly paced) and new developments are revolutionizing the education sector.

In the following question, out of the four alternatives, select the alternative which best expresses the meaning of the Idiom/ Phrase.

Live on the edge

In the question below, 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 ‘No improvement’.

Q. Pollution has a bad effect on the environment in the long run.

The sentence given with blanks is to be filled with an appropriate word. Four alternatives are suggested for each question. For each question, choose the correct alternative and click the button corresponding to it.

Q. ________ the perfect plan took weeks and will only take longer to execute.