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Free MCQs with Answers | Military Brat Defence Academy

Q: An atom has atomic number 12. Its number of protons is:

Correct Answer: A. 12. Atomic number equals the number of protons.

Q: A solution has pH 4. It is:

Correct Answer: A. acidic. A pH below 7 indicates an acidic solution.

Q: The region around a magnet where magnetic effect is experienced is called:

Correct Answer: B. magnetic field. It is the magnetic field.

Q: Electrical resistance is measured in:

Correct Answer: B. Ohm. Resistance is measured in ohms.

Q: A sample has mass 420 g and volume 70 cm³. Density is:

Correct Answer: A. 6 g/cm³. Density = mass/volume.

Q: A current of 4 A flows through a resistance of 5 Ω. The voltage is:

Correct Answer: A. 20 V. Ohm's law: V = IR.

Q: A force of 54 N moves an object 4 m in the force direction. Work done is:

Correct Answer: A. 216 J. Work = force × displacement.

Q: An object has initial velocity 5 m/s and acceleration 3 m/s² for 4 s. Final velocity is:

Correct Answer: A. 17 m/s. Use v = u + at.

Q: The binary representation of decimal 10 is:

Correct Answer: B. 1010. 10 in binary is 1010.

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QID #1144987 Agniveer Army Technical 2027 Mock Test Series Agniveer Army Technical Online Mock Test 22 Medium

An atom has atomic number 12. Its number of protons is:

Correct Answer: A. 12
Atomic number equals the number of protons.

Question: An atom has atomic number 12. Its number of protons is:

A. 12

B. 13

C. 11

D. 18

Correct Answer: A. 12Explanation: Atomic number equals the number of protons.

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QID #1144986 Agniveer Army Technical 2027 Mock Test Series Agniveer Army Technical Online Mock Test 22 Medium

A solution has pH 4. It is:

Correct Answer: A. acidic
A pH below 7 indicates an acidic solution.

Question: A solution has pH 4. It is:

A. acidic

B. basic

C. neutral

D. metallic

Correct Answer: A. acidicExplanation: A pH below 7 indicates an acidic solution.

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QID #1144985 Agniveer Army Technical 2027 Mock Test Series Agniveer Army Technical Online Mock Test 22 Medium

An element X has valency 3. If oxygen has valency 2, which statement is useful while writing the simplest oxide formula?

Correct Answer: A. Criss-cross the valencies and simplify the ratio
The criss-cross method uses valencies to obtain the simplest combining ratio.

Question: An element X has valency 3. If oxygen has valency 2, which statement is useful while writing the simplest oxide formula?

A. Criss-cross the valencies and simplify the ratio

B. Add the valencies only

C. Ignore oxygen's valency

D. Use atomic masses instead

Correct Answer: A. Criss-cross the valencies and simplify the ratioExplanation: The criss-cross method uses valencies to obtain the simplest combining ratio.

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QID #1144984 Agniveer Army Technical 2027 Mock Test Series Agniveer Army Technical Online Mock Test 22 Medium

The region around a magnet where magnetic effect is experienced is called:

Correct Answer: B. magnetic field
It is the magnetic field.

Question: The region around a magnet where magnetic effect is experienced is called:

A. electric field

B. magnetic field

C. gravitational field

D. thermal field

Correct Answer: B. magnetic fieldExplanation: It is the magnetic field.

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QID #1144983 Agniveer Army Technical 2027 Mock Test Series Agniveer Army Technical Online Mock Test 22 Medium

Electrical resistance is measured in:

Correct Answer: B. Ohm
Resistance is measured in ohms.

Question: Electrical resistance is measured in:

A. Ampere

B. Ohm

C. Volt

D. Watt

Correct Answer: B. OhmExplanation: Resistance is measured in ohms.

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QID #1144982 Agniveer Army Technical 2027 Mock Test Series Agniveer Army Technical Online Mock Test 22 Medium

A sample has mass 420 g and volume 70 cm³. Density is:

Correct Answer: A. 6 g/cm³
Density = mass/volume.

Question: A sample has mass 420 g and volume 70 cm³. Density is:

A. 6 g/cm³

B. 29400 g/cm³

C. 0.166667 g/cm³

D. 490 g/cm³

Correct Answer: A. 6 g/cm³Explanation: Density = mass/volume.

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QID #1144981 Agniveer Army Technical 2027 Mock Test Series Agniveer Army Technical Online Mock Test 22 Medium

A current of 4 A flows through a resistance of 5 Ω. The voltage is:

Correct Answer: A. 20 V
Ohm's law: V = IR.

Question: A current of 4 A flows through a resistance of 5 Ω. The voltage is:

A. 20 V

B. 9 V

C. 1.25 V

D. 0.8 V

Correct Answer: A. 20 VExplanation: Ohm's law: V = IR.

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QID #1144980 Agniveer Army Technical 2027 Mock Test Series Agniveer Army Technical Online Mock Test 22 Medium

A force of 54 N moves an object 4 m in the force direction. Work done is:

Correct Answer: A. 216 J
Work = force × displacement.

Question: A force of 54 N moves an object 4 m in the force direction. Work done is:

A. 216 J

B. 58 J

C. 13.5 J

D. 432 J

Correct Answer: A. 216 JExplanation: Work = force × displacement.

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QID #1144979 Agniveer Army Technical 2027 Mock Test Series Agniveer Army Technical Online Mock Test 22 Medium

An object has initial velocity 5 m/s and acceleration 3 m/s² for 4 s. Final velocity is:

Correct Answer: A. 17 m/s
Use v = u + at.

Question: An object has initial velocity 5 m/s and acceleration 3 m/s² for 4 s. Final velocity is:

A. 17 m/s

B. 20 m/s

C. 12 m/s

D. 20 m/s

Correct Answer: A. 17 m/sExplanation: Use v = u + at.

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QID #1144978 Agniveer Army Technical 2027 Mock Test Series Agniveer Army Technical Online Mock Test 22 Medium

The binary representation of decimal 10 is:

Correct Answer: B. 1010
10 in binary is 1010.

Question: The binary representation of decimal 10 is:

A. 1001

B. 1010

C. 1100

D. 1110

Correct Answer: B. 1010Explanation: 10 in binary is 1010.

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QID #1144977 Agniveer Army Technical 2027 Mock Test Series Agniveer Army Technical Online Mock Test 22 Medium

A bag has 4 red and 4 blue balls. Probability of drawing a red ball is:

Correct Answer: A. 4/8
Probability = favorable outcomes / total outcomes.

Question: A bag has 4 red and 4 blue balls. Probability of drawing a red ball is:

A. 4/8

B. 4/8

C. 1/8

D. 3/8

Correct Answer: A. 4/8Explanation: Probability = favorable outcomes / total outcomes.

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QID #1144976 Agniveer Army Technical 2027 Mock Test Series Agniveer Army Technical Online Mock Test 22 Medium

The median of 34, 37, 40, 43, 46 is:

Correct Answer: B. 40
For five ordered values, the median is the third value.

Question: The median of 34, 37, 40, 43, 46 is:

A. 37

B. 40

C. 43

D. 46

Correct Answer: B. 40Explanation: For five ordered values, the median is the third value.

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QID #1144975 Agniveer Army Technical 2027 Mock Test Series Agniveer Army Technical Online Mock Test 22 Medium

If the angle of elevation of the top of a pole is 45° and the observer is 20 m away, the pole's height (ignoring eye height) is:

Correct Answer: B. 20 m
tan45°=1, so height equals horizontal distance.

Question: If the angle of elevation of the top of a pole is 45° and the observer is 20 m away, the pole's height (ignoring eye height) is:

A. 10 m

B. 20 m

C. 20√2 m

D. 40 m

Correct Answer: B. 20 mExplanation: tan45°=1, so height equals horizontal distance.

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QID #1144974 Agniveer Army Technical 2027 Mock Test Series Agniveer Army Technical Online Mock Test 22 Medium

The value of sin 45° is:

Correct Answer: A. √2/2
sin 45° has the standard value shown.

Question: The value of sin 45° is:

A. √2/2

B. 1

C. 0

D. √3

Correct Answer: A. √2/2Explanation: sin 45° has the standard value shown.

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QID #1144973 Agniveer Army Technical 2027 Mock Test Series Agniveer Army Technical Online Mock Test 22 Medium

The circumference of a circle of radius 5 cm is:

Correct Answer: B. 10π cm
Circumference = 2πr.

Question: The circumference of a circle of radius 5 cm is:

A. 25π cm

B. 10π cm

C. 5π cm

D. 50π cm

Correct Answer: B. 10π cmExplanation: Circumference = 2πr.

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QID #1144972 Agniveer Army Technical 2027 Mock Test Series Agniveer Army Technical Online Mock Test 22 Medium

The sum of the interior angles of a triangle is:

Correct Answer: B. 180°
The angles of a triangle sum to 180°.

Question: The sum of the interior angles of a triangle is:

A. 90°

B. 180°

C. 270°

D. 360°

Correct Answer: B. 180°Explanation: The angles of a triangle sum to 180°.

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QID #1144971 Agniveer Army Technical 2027 Mock Test Series Agniveer Army Technical Online Mock Test 22 Medium

A rectangle has length 18 cm and breadth 7 cm. Its perimeter is:

Correct Answer: B. 50 cm
Perimeter = 2(l+b).

Question: A rectangle has length 18 cm and breadth 7 cm. Its perimeter is:

A. 126 cm

B. 50 cm

C. 25 cm

D. 252 cm

Correct Answer: B. 50 cmExplanation: Perimeter = 2(l+b).

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QID #1144970 Agniveer Army Technical 2027 Mock Test Series Agniveer Army Technical Online Mock Test 22 Medium

Area of a square of side 9 cm is:

Correct Answer: B. 81 cm²
Area of square = side².

Question: Area of a square of side 9 cm is:

A. 36 cm²

B. 81 cm²

C. 162 cm²

D. 18 cm²

Correct Answer: B. 81 cm²Explanation: Area of square = side².

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QID #1144969 Agniveer Army Technical 2027 Mock Test Series Agniveer Army Technical Online Mock Test 22 Medium

If a + b = 10 and a - b = 4, the value of a is:

Correct Answer: C. 7
Adding equations gives 2a=14, so a=7.

Question: If a + b = 10 and a - b = 4, the value of a is:

A. 3

B. 6

C. 7

D. 14

Correct Answer: C. 7Explanation: Adding equations gives 2a=14, so a=7.

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QID #1144968 Agniveer Army Technical 2027 Mock Test Series Agniveer Army Technical Online Mock Test 22 Medium

The average of 34, 37, 40, 43, 46 is:

Correct Answer: C. 40
For an arithmetic sequence, the average is the middle value.

Question: The average of 34, 37, 40, 43, 46 is:

A. 38

B. 39

C. 40

D. 41

Correct Answer: C. 40Explanation: For an arithmetic sequence, the average is the middle value.

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