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Free MCQs with Answers | Military Brat Defence Academy

Q: A solution has pH 5. It is:

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

Q: The process in which a heavy nucleus splits is called:

Correct Answer: B. fission. Splitting a heavy nucleus is nuclear fission.

Q: The energy stored in a stretched spring is:

Correct Answer: B. potential. A stretched spring stores elastic potential energy.

Q: A sample has mass 430 g and volume 80 cm³. Density is:

Correct Answer: A. 5.375 g/cm³. Density = mass/volume.

Q: A wave has frequency 65 Hz and wavelength 4 m. Its speed is:

Correct Answer: A. 260 m/s. Wave speed v=fλ.

Q: A current of 5 A flows through a resistance of 6 Ω. The voltage is:

Correct Answer: A. 30 V. Ohm's law: V = IR.

Q: A 5 kg body moves at 9 m/s. Its kinetic energy is:

Correct Answer: A. 202.5 J. KE = 1/2 mv².

Q: A force of 56 N moves an object 5 m in the force direction. Work done is:

Correct Answer: A. 280 J. Work = force × displacement.

Q: An object has initial velocity 6 m/s and acceleration 4 m/s² for 5 s. Final velocity is:

Correct Answer: A. 26 m/s. Use v = u + at.

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QID #1145027 Agniveer Army Technical 2027 Mock Test Series Agniveer Army Technical Online Mock Test 23 Medium

A solution has pH 5. It is:

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

Question: A solution has pH 5. 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 #1145026 Agniveer Army Technical 2027 Mock Test Series Agniveer Army Technical Online Mock Test 23 Medium

An element X has valency 4. 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 4. 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 #1145025 Agniveer Army Technical 2027 Mock Test Series Agniveer Army Technical Online Mock Test 23 Medium

The process in which a heavy nucleus splits is called:

Correct Answer: B. fission
Splitting a heavy nucleus is nuclear fission.

Question: The process in which a heavy nucleus splits is called:

A. fusion

B. fission

C. ionization

D. radiation only

Correct Answer: B. fissionExplanation: Splitting a heavy nucleus is nuclear fission.

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QID #1145024 Agniveer Army Technical 2027 Mock Test Series Agniveer Army Technical Online Mock Test 23 Medium

The energy stored in a stretched spring is:

Correct Answer: B. potential
A stretched spring stores elastic potential energy.

Question: The energy stored in a stretched spring is:

A. kinetic

B. potential

C. chemical

D. nuclear

Correct Answer: B. potentialExplanation: A stretched spring stores elastic potential energy.

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QID #1145023 Agniveer Army Technical 2027 Mock Test Series Agniveer Army Technical Online Mock Test 23 Medium

A sample has mass 430 g and volume 80 cm³. Density is:

Correct Answer: A. 5.375 g/cm³
Density = mass/volume.

Question: A sample has mass 430 g and volume 80 cm³. Density is:

A. 5.375 g/cm³

B. 34400 g/cm³

C. 0.186047 g/cm³

D. 510 g/cm³

Correct Answer: A. 5.375 g/cm³Explanation: Density = mass/volume.

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QID #1145022 Agniveer Army Technical 2027 Mock Test Series Agniveer Army Technical Online Mock Test 23 Medium

A wave has frequency 65 Hz and wavelength 4 m. Its speed is:

Correct Answer: A. 260 m/s
Wave speed v=fλ.

Question: A wave has frequency 65 Hz and wavelength 4 m. Its speed is:

A. 260 m/s

B. 16.25 m/s

C. 69 m/s

D. 0.0615385 m/s

Correct Answer: A. 260 m/sExplanation: Wave speed v=fλ.

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QID #1145021 Agniveer Army Technical 2027 Mock Test Series Agniveer Army Technical Online Mock Test 23 Medium

A current of 5 A flows through a resistance of 6 Ω. The voltage is:

Correct Answer: A. 30 V
Ohm's law: V = IR.

Question: A current of 5 A flows through a resistance of 6 Ω. The voltage is:

A. 30 V

B. 11 V

C. 1.2 V

D. 0.833333 V

Correct Answer: A. 30 VExplanation: Ohm's law: V = IR.

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QID #1145020 Agniveer Army Technical 2027 Mock Test Series Agniveer Army Technical Online Mock Test 23 Medium

A 5 kg body moves at 9 m/s. Its kinetic energy is:

Correct Answer: A. 202.5 J
KE = 1/2 mv².

Question: A 5 kg body moves at 9 m/s. Its kinetic energy is:

A. 202.5 J

B. 45 J

C. 405 J

D. 22.5 J

Correct Answer: A. 202.5 JExplanation: KE = 1/2 mv².

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QID #1145019 Agniveer Army Technical 2027 Mock Test Series Agniveer Army Technical Online Mock Test 23 Medium

A force of 56 N moves an object 5 m in the force direction. Work done is:

Correct Answer: A. 280 J
Work = force × displacement.

Question: A force of 56 N moves an object 5 m in the force direction. Work done is:

A. 280 J

B. 61 J

C. 11.2 J

D. 560 J

Correct Answer: A. 280 JExplanation: Work = force × displacement.

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QID #1145018 Agniveer Army Technical 2027 Mock Test Series Agniveer Army Technical Online Mock Test 23 Medium

An object has initial velocity 6 m/s and acceleration 4 m/s² for 5 s. Final velocity is:

Correct Answer: A. 26 m/s
Use v = u + at.

Question: An object has initial velocity 6 m/s and acceleration 4 m/s² for 5 s. Final velocity is:

A. 26 m/s

B. 30 m/s

C. 20 m/s

D. 30 m/s

Correct Answer: A. 26 m/sExplanation: Use v = u + at.

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QID #1145017 Agniveer Army Technical 2027 Mock Test Series Agniveer Army Technical Online Mock Test 23 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 #1145016 Agniveer Army Technical 2027 Mock Test Series Agniveer Army Technical Online Mock Test 23 Medium

A bag has 5 red and 5 blue balls. Probability of drawing a red ball is:

Correct Answer: A. 5/10
Probability = favorable outcomes / total outcomes.

Question: A bag has 5 red and 5 blue balls. Probability of drawing a red ball is:

A. 5/10

B. 5/10

C. 1/10

D. 4/10

Correct Answer: A. 5/10Explanation: Probability = favorable outcomes / total outcomes.

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QID #1145015 Agniveer Army Technical 2027 Mock Test Series Agniveer Army Technical Online Mock Test 23 Medium

The median of 35, 38, 41, 44, 47 is:

Correct Answer: B. 41
For five ordered values, the median is the third value.

Question: The median of 35, 38, 41, 44, 47 is:

A. 38

B. 41

C. 44

D. 47

Correct Answer: B. 41Explanation: For five ordered values, the median is the third value.

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QID #1145014 Agniveer Army Technical 2027 Mock Test Series Agniveer Army Technical Online Mock Test 23 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 #1145013 Agniveer Army Technical 2027 Mock Test Series Agniveer Army Technical Online Mock Test 23 Medium

The value of sin 30° is:

Correct Answer: A. 1/2
sin 30° has the standard value shown.

Question: The value of sin 30° is:

A. 1/2

B. 1

C. 0

D. √3

Correct Answer: A. 1/2Explanation: sin 30° has the standard value shown.

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QID #1145012 Agniveer Army Technical 2027 Mock Test Series Agniveer Army Technical Online Mock Test 23 Medium

The circumference of a circle of radius 6 cm is:

Correct Answer: B. 12π cm
Circumference = 2πr.

Question: The circumference of a circle of radius 6 cm is:

A. 36π cm

B. 12π cm

C. 6π cm

D. 72π cm

Correct Answer: B. 12π cmExplanation: Circumference = 2πr.

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QID #1145011 Agniveer Army Technical 2027 Mock Test Series Agniveer Army Technical Online Mock Test 23 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 #1145010 Agniveer Army Technical 2027 Mock Test Series Agniveer Army Technical Online Mock Test 23 Medium

A rectangle has length 19 cm and breadth 8 cm. Its perimeter is:

Correct Answer: B. 54 cm
Perimeter = 2(l+b).

Question: A rectangle has length 19 cm and breadth 8 cm. Its perimeter is:

A. 152 cm

B. 54 cm

C. 27 cm

D. 304 cm

Correct Answer: B. 54 cmExplanation: Perimeter = 2(l+b).

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QID #1145009 Agniveer Army Technical 2027 Mock Test Series Agniveer Army Technical Online Mock Test 23 Medium

Area of a square of side 10 cm is:

Correct Answer: B. 100 cm²
Area of square = side².

Question: Area of a square of side 10 cm is:

A. 40 cm²

B. 100 cm²

C. 200 cm²

D. 20 cm²

Correct Answer: B. 100 cm²Explanation: Area of square = side².

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QID #1145008 Agniveer Army Technical 2027 Mock Test Series Agniveer Army Technical Online Mock Test 23 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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