Free MCQs with Answers | Military Brat Defence Academy

Q: The negatively charged particle in an atom is:

Correct Answer: C. electron. Electrons carry negative charge.

Q: Matter is anything that has:

Correct Answer: B. mass and occupies space. Matter has mass and occupies space.

Q: Ethanoic acid belongs to which class?

Correct Answer: B. carboxylic acids. Ethanoic acid is a carboxylic acid.

Q: An atom has atomic number 8. Its number of protons is:

Correct Answer: A. 8. 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: A prism can split white light into colours due to:

Correct Answer: B. dispersion. Dispersion separates colours because refractive index varies with wavelength.

Q: The earth wire is used mainly for:

Correct Answer: B. safety against electric shock. Earthing provides a safer path for fault current.

Q: A fuse is connected in a circuit mainly to:

Correct Answer: B. protect against excess current. A fuse protects a circuit from excessive current.

Q: A heat engine converts heat energy mainly into:

Correct Answer: A. mechanical work. Heat engines convert thermal energy into mechanical work.

QID #1144827 Agniveer Army Technical 2027 Mock Test Series Agniveer Army Technical Online Mock Test 18 Medium

The negatively charged particle in an atom is:

Correct Answer: C. electron
Electrons carry negative charge.

Question: The negatively charged particle in an atom is:

A. proton

B. neutron

C. electron

D. nucleus

Correct Answer: C. electronExplanation: Electrons carry negative charge.

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QID #1144826 Agniveer Army Technical 2027 Mock Test Series Agniveer Army Technical Online Mock Test 18 Medium

Matter is anything that has:

Correct Answer: B. mass and occupies space
Matter has mass and occupies space.

Question: Matter is anything that has:

A. only colour

B. mass and occupies space

C. only volume

D. only energy

Correct Answer: B. mass and occupies spaceExplanation: Matter has mass and occupies space.

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QID #1144825 Agniveer Army Technical 2027 Mock Test Series Agniveer Army Technical Online Mock Test 18 Medium

Ethanoic acid belongs to which class?

Correct Answer: B. carboxylic acids
Ethanoic acid is a carboxylic acid.

Question: Ethanoic acid belongs to which class?

A. alcohols

B. carboxylic acids

C. alkanes

D. amines

Correct Answer: B. carboxylic acidsExplanation: Ethanoic acid is a carboxylic acid.

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QID #1144824 Agniveer Army Technical 2027 Mock Test Series Agniveer Army Technical Online Mock Test 18 Medium

An atom has atomic number 8. Its number of protons is:

Correct Answer: A. 8
Atomic number equals the number of protons.

Question: An atom has atomic number 8. Its number of protons is:

A. 8

B. 9

C. 7

D. 14

Correct Answer: A. 8Explanation: Atomic number equals the number of protons.

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QID #1144823 Agniveer Army Technical 2027 Mock Test Series Agniveer Army Technical Online Mock Test 18 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 #1144822 Agniveer Army Technical 2027 Mock Test Series Agniveer Army Technical Online Mock Test 18 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 #1144821 Agniveer Army Technical 2027 Mock Test Series Agniveer Army Technical Online Mock Test 18 Medium

A prism can split white light into colours due to:

Correct Answer: B. dispersion
Dispersion separates colours because refractive index varies with wavelength.

Question: A prism can split white light into colours due to:

A. reflection only

B. dispersion

C. conduction

D. polarization only

Correct Answer: B. dispersionExplanation: Dispersion separates colours because refractive index varies with wavelength.

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QID #1144820 Agniveer Army Technical 2027 Mock Test Series Agniveer Army Technical Online Mock Test 18 Medium

The earth wire is used mainly for:

Correct Answer: B. safety against electric shock
Earthing provides a safer path for fault current.

Question: The earth wire is used mainly for:

A. increasing voltage

B. safety against electric shock

C. reducing frequency

D. increasing power

Correct Answer: B. safety against electric shockExplanation: Earthing provides a safer path for fault current.

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QID #1144819 Agniveer Army Technical 2027 Mock Test Series Agniveer Army Technical Online Mock Test 18 Medium

A fuse is connected in a circuit mainly to:

Correct Answer: B. protect against excess current
A fuse protects a circuit from excessive current.

Question: A fuse is connected in a circuit mainly to:

A. increase current

B. protect against excess current

C. raise voltage

D. store charge

Correct Answer: B. protect against excess currentExplanation: A fuse protects a circuit from excessive current.

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QID #1144818 Agniveer Army Technical 2027 Mock Test Series Agniveer Army Technical Online Mock Test 18 Medium

A heat engine converts heat energy mainly into:

Correct Answer: A. mechanical work
Heat engines convert thermal energy into mechanical work.

Question: A heat engine converts heat energy mainly into:

A. mechanical work

B. chemical energy

C. mass

D. pressure only

Correct Answer: A. mechanical workExplanation: Heat engines convert thermal energy into mechanical work.

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QID #1144817 Agniveer Army Technical 2027 Mock Test Series Agniveer Army Technical Online Mock Test 18 Medium

The Sun produces energy mainly through:

Correct Answer: B. nuclear fusion
Solar energy is produced by nuclear fusion.

Question: The Sun produces energy mainly through:

A. combustion

B. nuclear fusion

C. nuclear fission

D. chemical reaction

Correct Answer: B. nuclear fusionExplanation: Solar energy is produced by nuclear fusion.

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QID #1144816 Agniveer Army Technical 2027 Mock Test Series Agniveer Army Technical Online Mock Test 18 Medium

A sample has mass 380 g and volume 80 cm³. Density is:

Correct Answer: A. 4.75 g/cm³
Density = mass/volume.

Question: A sample has mass 380 g and volume 80 cm³. Density is:

A. 4.75 g/cm³

B. 30400 g/cm³

C. 0.210526 g/cm³

D. 460 g/cm³

Correct Answer: A. 4.75 g/cm³Explanation: Density = mass/volume.

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QID #1144815 Agniveer Army Technical 2027 Mock Test Series Agniveer Army Technical Online Mock Test 18 Medium

A wave has frequency 60 Hz and wavelength 2 m. Its speed is:

Correct Answer: A. 120 m/s
Wave speed v=fλ.

Question: A wave has frequency 60 Hz and wavelength 2 m. Its speed is:

A. 120 m/s

B. 30 m/s

C. 62 m/s

D. 0.0333333 m/s

Correct Answer: A. 120 m/sExplanation: Wave speed v=fλ.

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QID #1144814 Agniveer Army Technical 2027 Mock Test Series Agniveer Army Technical Online Mock Test 18 Medium

A current of 4 A flows through a resistance of 6 Ω. The voltage is:

Correct Answer: A. 24 V
Ohm's law: V = IR.

Question: A current of 4 A flows through a resistance of 6 Ω. The voltage is:

A. 24 V

B. 10 V

C. 1.5 V

D. 0.666667 V

Correct Answer: A. 24 VExplanation: Ohm's law: V = IR.

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QID #1144813 Agniveer Army Technical 2027 Mock Test Series Agniveer Army Technical Online Mock Test 18 Medium

A force of 46 N moves an object 4 m in the force direction. Work done is:

Correct Answer: A. 184 J
Work = force × displacement.

Question: A force of 46 N moves an object 4 m in the force direction. Work done is:

A. 184 J

B. 50 J

C. 11.5 J

D. 368 J

Correct Answer: A. 184 JExplanation: Work = force × displacement.

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QID #1144812 Agniveer Army Technical 2027 Mock Test Series Agniveer Army Technical Online Mock Test 18 Medium

An object has initial velocity 6 m/s and acceleration 2 m/s² for 4 s. Final velocity is:

Correct Answer: A. 14 m/s
Use v = u + at.

Question: An object has initial velocity 6 m/s and acceleration 2 m/s² for 4 s. Final velocity is:

A. 14 m/s

B. 24 m/s

C. 8 m/s

D. 16 m/s

Correct Answer: A. 14 m/sExplanation: Use v = u + at.

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QID #1144811 Agniveer Army Technical 2027 Mock Test Series Agniveer Army Technical Online Mock Test 18 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 #1144810 Agniveer Army Technical 2027 Mock Test Series Agniveer Army Technical Online Mock Test 18 Medium

A bag has 4 red and 3 blue balls. Probability of drawing a red ball is:

Correct Answer: A. 4/7
Probability = favorable outcomes / total outcomes.

Question: A bag has 4 red and 3 blue balls. Probability of drawing a red ball is:

A. 4/7

B. 3/7

C. 1/7

D. 3/7

Correct Answer: A. 4/7Explanation: Probability = favorable outcomes / total outcomes.

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QID #1144809 Agniveer Army Technical 2027 Mock Test Series Agniveer Army Technical Online Mock Test 18 Medium

The median of 30, 33, 36, 39, 42 is:

Correct Answer: B. 36
For five ordered values, the median is the third value.

Question: The median of 30, 33, 36, 39, 42 is:

A. 33

B. 36

C. 39

D. 42

Correct Answer: B. 36Explanation: For five ordered values, the median is the third value.

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QID #1144808 Agniveer Army Technical 2027 Mock Test Series Agniveer Army Technical Online Mock Test 18 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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Free MCQs with Answers | Military Brat Defence Academy

The negatively charged particle in an atom is:

Matter is anything that has:

Ethanoic acid belongs to which class?

An atom has atomic number 8. Its number of protons is:

A solution has pH 4. It is:

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

A prism can split white light into colours due to:

The earth wire is used mainly for:

A fuse is connected in a circuit mainly to:

A heat engine converts heat energy mainly into:

The Sun produces energy mainly through:

A sample has mass 380 g and volume 80 cm³. Density is:

A wave has frequency 60 Hz and wavelength 2 m. Its speed is:

A current of 4 A flows through a resistance of 6 Ω. The voltage is:

A force of 46 N moves an object 4 m in the force direction. Work done is:

An object has initial velocity 6 m/s and acceleration 2 m/s² for 4 s. Final velocity is:

The binary representation of decimal 10 is:

A bag has 4 red and 3 blue balls. Probability of drawing a red ball is:

The median of 30, 33, 36, 39, 42 is:

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:

Free MCQs with Answers and Explanations