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Free MCQs with Answers | Military Brat Defence Academy

Q: Acids turn blue litmus:

Correct Answer: A. red. Acids turn blue litmus red.

Q: A covalent bond is formed by:

Correct Answer: A. sharing electrons. Covalent bonds involve sharing of electrons.

Q: An atom has atomic number 9. Its number of protons is:

Correct Answer: A. 9. Atomic number equals the number of protons.

Q: A solution has pH 5. It is:

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

Q: Newton's first law is also called the law of:

Correct Answer: B. Inertia. Newton's first law describes inertia.

Q: Acceleration is the rate of change of:

Correct Answer: B. Velocity. Acceleration is change of velocity per unit time.

Q: The SI unit of work is:

Correct Answer: B. Joule. Work is measured in joules.

Q: A sample has mass 390 g and volume 90 cm³. Density is:

Correct Answer: A. 4.33333 g/cm³. Density = mass/volume.

Q: A wave has frequency 65 Hz and wavelength 3 m. Its speed is:

Correct Answer: A. 195 m/s. Wave speed v=fλ.

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QID #1144867 Agniveer Army Technical 2027 Mock Test Series Agniveer Army Technical Online Mock Test 19 Medium

Acids turn blue litmus:

Correct Answer: A. red
Acids turn blue litmus red.

Question: Acids turn blue litmus:

A. red

B. green

C. yellow

D. blue

Correct Answer: A. redExplanation: Acids turn blue litmus red.

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QID #1144866 Agniveer Army Technical 2027 Mock Test Series Agniveer Army Technical Online Mock Test 19 Medium

A covalent bond is formed by:

Correct Answer: A. sharing electrons
Covalent bonds involve sharing of electrons.

Question: A covalent bond is formed by:

A. sharing electrons

B. transfer of protons

C. loss of neutrons

D. sharing nuclei

Correct Answer: A. sharing electronsExplanation: Covalent bonds involve sharing of electrons.

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QID #1144865 Agniveer Army Technical 2027 Mock Test Series Agniveer Army Technical Online Mock Test 19 Medium

An atom has atomic number 9. Its number of protons is:

Correct Answer: A. 9
Atomic number equals the number of protons.

Question: An atom has atomic number 9. Its number of protons is:

A. 9

B. 10

C. 8

D. 15

Correct Answer: A. 9Explanation: Atomic number equals the number of protons.

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QID #1144864 Agniveer Army Technical 2027 Mock Test Series Agniveer Army Technical Online Mock Test 19 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 #1144863 Agniveer Army Technical 2027 Mock Test Series Agniveer Army Technical Online Mock Test 19 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 #1144862 Agniveer Army Technical 2027 Mock Test Series Agniveer Army Technical Online Mock Test 19 Medium

Newton's first law is also called the law of:

Correct Answer: B. Inertia
Newton's first law describes inertia.

Question: Newton's first law is also called the law of:

A. Momentum

B. Inertia

C. Energy

D. Pressure

Correct Answer: B. InertiaExplanation: Newton's first law describes inertia.

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QID #1144861 Agniveer Army Technical 2027 Mock Test Series Agniveer Army Technical Online Mock Test 19 Medium

Acceleration is the rate of change of:

Correct Answer: B. Velocity
Acceleration is change of velocity per unit time.

Question: Acceleration is the rate of change of:

A. Distance

B. Velocity

C. Mass

D. Force

Correct Answer: B. VelocityExplanation: Acceleration is change of velocity per unit time.

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QID #1144860 Agniveer Army Technical 2027 Mock Test Series Agniveer Army Technical Online Mock Test 19 Medium

The SI unit of work is:

Correct Answer: B. Joule
Work is measured in joules.

Question: The SI unit of work is:

A. Newton

B. Joule

C. Watt

D. Pascal

Correct Answer: B. JouleExplanation: Work is measured in joules.

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QID #1144859 Agniveer Army Technical 2027 Mock Test Series Agniveer Army Technical Online Mock Test 19 Medium

A sample has mass 390 g and volume 90 cm³. Density is:

Correct Answer: A. 4.33333 g/cm³
Density = mass/volume.

Question: A sample has mass 390 g and volume 90 cm³. Density is:

A. 4.33333 g/cm³

B. 35100 g/cm³

C. 0.230769 g/cm³

D. 480 g/cm³

Correct Answer: A. 4.33333 g/cm³Explanation: Density = mass/volume.

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QID #1144858 Agniveer Army Technical 2027 Mock Test Series Agniveer Army Technical Online Mock Test 19 Medium

A wave has frequency 65 Hz and wavelength 3 m. Its speed is:

Correct Answer: A. 195 m/s
Wave speed v=fλ.

Question: A wave has frequency 65 Hz and wavelength 3 m. Its speed is:

A. 195 m/s

B. 21.6667 m/s

C. 68 m/s

D. 0.0461538 m/s

Correct Answer: A. 195 m/sExplanation: Wave speed v=fλ.

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QID #1144857 Agniveer Army Technical 2027 Mock Test Series Agniveer Army Technical Online Mock Test 19 Medium

A current of 5 A flows through a resistance of 7 Ω. The voltage is:

Correct Answer: A. 35 V
Ohm's law: V = IR.

Question: A current of 5 A flows through a resistance of 7 Ω. The voltage is:

A. 35 V

B. 12 V

C. 1.4 V

D. 0.714286 V

Correct Answer: A. 35 VExplanation: Ohm's law: V = IR.

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QID #1144856 Agniveer Army Technical 2027 Mock Test Series Agniveer Army Technical Online Mock Test 19 Medium

A force of 48 N moves an object 5 m in the force direction. Work done is:

Correct Answer: A. 240 J
Work = force × displacement.

Question: A force of 48 N moves an object 5 m in the force direction. Work done is:

A. 240 J

B. 53 J

C. 9.6 J

D. 480 J

Correct Answer: A. 240 JExplanation: Work = force × displacement.

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QID #1144855 Agniveer Army Technical 2027 Mock Test Series Agniveer Army Technical Online Mock Test 19 Medium

An object has initial velocity 7 m/s and acceleration 3 m/s² for 5 s. Final velocity is:

Correct Answer: A. 22 m/s
Use v = u + at.

Question: An object has initial velocity 7 m/s and acceleration 3 m/s² for 5 s. Final velocity is:

A. 22 m/s

B. 35 m/s

C. 15 m/s

D. 25 m/s

Correct Answer: A. 22 m/sExplanation: Use v = u + at.

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QID #1144854 Agniveer Army Technical 2027 Mock Test Series Agniveer Army Technical Online Mock Test 19 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 #1144853 Agniveer Army Technical 2027 Mock Test Series Agniveer Army Technical Online Mock Test 19 Medium

A bag has 5 red and 4 blue balls. Probability of drawing a red ball is:

Correct Answer: A. 5/9
Probability = favorable outcomes / total outcomes.

Question: A bag has 5 red and 4 blue balls. Probability of drawing a red ball is:

A. 5/9

B. 4/9

C. 1/9

D. 4/9

Correct Answer: A. 5/9Explanation: Probability = favorable outcomes / total outcomes.

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QID #1144852 Agniveer Army Technical 2027 Mock Test Series Agniveer Army Technical Online Mock Test 19 Medium

The median of 31, 34, 37, 40, 43 is:

Correct Answer: B. 37
For five ordered values, the median is the third value.

Question: The median of 31, 34, 37, 40, 43 is:

A. 34

B. 37

C. 40

D. 43

Correct Answer: B. 37Explanation: For five ordered values, the median is the third value.

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QID #1144851 Agniveer Army Technical 2027 Mock Test Series Agniveer Army Technical Online Mock Test 19 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 #1144850 Agniveer Army Technical 2027 Mock Test Series Agniveer Army Technical Online Mock Test 19 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 #1144849 Agniveer Army Technical 2027 Mock Test Series Agniveer Army Technical Online Mock Test 19 Medium

The circumference of a circle of radius 7 cm is:

Correct Answer: B. 14π cm
Circumference = 2πr.

Question: The circumference of a circle of radius 7 cm is:

A. 49π cm

B. 14π cm

C. 7π cm

D. 98π cm

Correct Answer: B. 14π cmExplanation: Circumference = 2πr.

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QID #1144848 Agniveer Army Technical 2027 Mock Test Series Agniveer Army Technical Online Mock Test 19 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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