Free MCQs with Answers | Military Brat Defence Academy

Q: Electrolysis uses electric current to drive a:

Correct Answer: B. chemical change. Electrolysis drives a chemical reaction using electrical energy.

Q: An electrochemical cell converts chemical energy into:

Correct Answer: B. electrical energy. An electrochemical cell produces electrical energy from chemical reactions.

Q: An atom has atomic number 10. Its number of protons is:

Correct Answer: A. 10. Atomic number equals the number of protons.

Q: A solution has pH 2. It is:

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

Q: Buoyant force on an immersed body equals the weight of:

Correct Answer: B. the displaced fluid. Archimedes' principle equates buoyant force to displaced fluid weight.

Q: Pressure is defined as:

Correct Answer: B. Force ÷ area. Pressure = force per unit area.

Q: Kinetic energy of a body depends on:

Correct Answer: A. mass and velocity. KE = 1/2 mv².

Q: A sample has mass 400 g and volume 50 cm³. Density is:

Correct Answer: A. 8 g/cm³. Density = mass/volume.

Q: A current of 2 A flows through a resistance of 3 Ω. The voltage is:

Correct Answer: A. 6 V. Ohm's law: V = IR.

QID #1144907 Agniveer Army Technical 2027 Mock Test Series Agniveer Army Technical Online Mock Test 20 Medium

Electrolysis uses electric current to drive a:

Correct Answer: B. chemical change
Electrolysis drives a chemical reaction using electrical energy.

Question: Electrolysis uses electric current to drive a:

A. spontaneous mechanical process

B. chemical change

C. nuclear change

D. gravitational change

Correct Answer: B. chemical changeExplanation: Electrolysis drives a chemical reaction using electrical energy.

View Question WhatsApp Share

QID #1144906 Agniveer Army Technical 2027 Mock Test Series Agniveer Army Technical Online Mock Test 20 Medium

An electrochemical cell converts chemical energy into:

Correct Answer: B. electrical energy
An electrochemical cell produces electrical energy from chemical reactions.

Question: An electrochemical cell converts chemical energy into:

A. nuclear energy

B. electrical energy

C. sound only

D. mass

Correct Answer: B. electrical energyExplanation: An electrochemical cell produces electrical energy from chemical reactions.

View Question WhatsApp Share

QID #1144905 Agniveer Army Technical 2027 Mock Test Series Agniveer Army Technical Online Mock Test 20 Medium

An atom has atomic number 10. Its number of protons is:

Correct Answer: A. 10
Atomic number equals the number of protons.

Question: An atom has atomic number 10. Its number of protons is:

A. 10

B. 11

C. 9

D. 16

Correct Answer: A. 10Explanation: Atomic number equals the number of protons.

View Question WhatsApp Share

QID #1144904 Agniveer Army Technical 2027 Mock Test Series Agniveer Army Technical Online Mock Test 20 Medium

A solution has pH 2. It is:

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

Question: A solution has pH 2. It is:

A. acidic

B. basic

C. neutral

D. metallic

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

View Question WhatsApp Share

QID #1144903 Agniveer Army Technical 2027 Mock Test Series Agniveer Army Technical Online Mock Test 20 Medium

An element X has valency 1. 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 1. 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.

View Question WhatsApp Share

QID #1144902 Agniveer Army Technical 2027 Mock Test Series Agniveer Army Technical Online Mock Test 20 Medium

Buoyant force on an immersed body equals the weight of:

Correct Answer: B. the displaced fluid
Archimedes' principle equates buoyant force to displaced fluid weight.

Question: Buoyant force on an immersed body equals the weight of:

A. the body

B. the displaced fluid

C. the container

D. the atmosphere

Correct Answer: B. the displaced fluidExplanation: Archimedes' principle equates buoyant force to displaced fluid weight.

View Question WhatsApp Share

QID #1144901 Agniveer Army Technical 2027 Mock Test Series Agniveer Army Technical Online Mock Test 20 Medium

Pressure is defined as:

Correct Answer: B. Force ÷ area
Pressure = force per unit area.

Question: Pressure is defined as:

A. Force × area

B. Force ÷ area

C. Area ÷ force

D. Mass × volume

Correct Answer: B. Force ÷ areaExplanation: Pressure = force per unit area.

View Question WhatsApp Share

QID #1144900 Agniveer Army Technical 2027 Mock Test Series Agniveer Army Technical Online Mock Test 20 Medium

Kinetic energy of a body depends on:

Correct Answer: A. mass and velocity
KE = 1/2 mv².

Question: Kinetic energy of a body depends on:

A. mass and velocity

B. pressure only

C. density only

D. temperature only

Correct Answer: A. mass and velocityExplanation: KE = 1/2 mv².

View Question WhatsApp Share

QID #1144899 Agniveer Army Technical 2027 Mock Test Series Agniveer Army Technical Online Mock Test 20 Medium

A sample has mass 400 g and volume 50 cm³. Density is:

Correct Answer: A. 8 g/cm³
Density = mass/volume.

Question: A sample has mass 400 g and volume 50 cm³. Density is:

A. 8 g/cm³

B. 20000 g/cm³

C. 0.125 g/cm³

D. 450 g/cm³

Correct Answer: A. 8 g/cm³Explanation: Density = mass/volume.

View Question WhatsApp Share

QID #1144898 Agniveer Army Technical 2027 Mock Test Series Agniveer Army Technical Online Mock Test 20 Medium

A current of 2 A flows through a resistance of 3 Ω. The voltage is:

Correct Answer: A. 6 V
Ohm's law: V = IR.

Question: A current of 2 A flows through a resistance of 3 Ω. The voltage is:

A. 6 V

B. 5 V

C. 1.5 V

D. 0.666667 V

Correct Answer: A. 6 VExplanation: Ohm's law: V = IR.

View Question WhatsApp Share

QID #1144897 Agniveer Army Technical 2027 Mock Test Series Agniveer Army Technical Online Mock Test 20 Medium

A force of 50 N moves an object 2 m in the force direction. Work done is:

Correct Answer: A. 100 J
Work = force × displacement.

Question: A force of 50 N moves an object 2 m in the force direction. Work done is:

A. 100 J

B. 52 J

C. 25 J

D. 200 J

Correct Answer: A. 100 JExplanation: Work = force × displacement.

View Question WhatsApp Share

QID #1144896 Agniveer Army Technical 2027 Mock Test Series Agniveer Army Technical Online Mock Test 20 Medium

An object has initial velocity 3 m/s and acceleration 4 m/s² for 2 s. Final velocity is:

Correct Answer: A. 11 m/s
Use v = u + at.

Question: An object has initial velocity 3 m/s and acceleration 4 m/s² for 2 s. Final velocity is:

A. 11 m/s

B. 6 m/s

C. 8 m/s

D. 15 m/s

Correct Answer: A. 11 m/sExplanation: Use v = u + at.

View Question WhatsApp Share

QID #1144895 Agniveer Army Technical 2027 Mock Test Series Agniveer Army Technical Online Mock Test 20 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.

View Question WhatsApp Share

QID #1144894 Agniveer Army Technical 2027 Mock Test Series Agniveer Army Technical Online Mock Test 20 Medium

A bag has 2 red and 5 blue balls. Probability of drawing a red ball is:

Correct Answer: A. 2/7
Probability = favorable outcomes / total outcomes.

Question: A bag has 2 red and 5 blue balls. Probability of drawing a red ball is:

A. 2/7

B. 5/7

C. 1/7

D. 1/7

Correct Answer: A. 2/7Explanation: Probability = favorable outcomes / total outcomes.

View Question WhatsApp Share

QID #1144893 Agniveer Army Technical 2027 Mock Test Series Agniveer Army Technical Online Mock Test 20 Medium

The median of 32, 35, 38, 41, 44 is:

Correct Answer: B. 38
For five ordered values, the median is the third value.

Question: The median of 32, 35, 38, 41, 44 is:

A. 35

B. 38

C. 41

D. 44

Correct Answer: B. 38Explanation: For five ordered values, the median is the third value.

View Question WhatsApp Share

QID #1144892 Agniveer Army Technical 2027 Mock Test Series Agniveer Army Technical Online Mock Test 20 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.

View Question WhatsApp Share

QID #1144891 Agniveer Army Technical 2027 Mock Test Series Agniveer Army Technical Online Mock Test 20 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.

View Question WhatsApp Share

QID #1144890 Agniveer Army Technical 2027 Mock Test Series Agniveer Army Technical Online Mock Test 20 Medium

The circumference of a circle of radius 3 cm is:

Correct Answer: B. 6π cm
Circumference = 2πr.

Question: The circumference of a circle of radius 3 cm is:

A. 9π cm

B. 6π cm

C. 3π cm

D. 18π cm

Correct Answer: B. 6π cmExplanation: Circumference = 2πr.

View Question WhatsApp Share

QID #1144889 Agniveer Army Technical 2027 Mock Test Series Agniveer Army Technical Online Mock Test 20 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°.

View Question WhatsApp Share

QID #1144888 Agniveer Army Technical 2027 Mock Test Series Agniveer Army Technical Online Mock Test 20 Medium

A rectangle has length 16 cm and breadth 5 cm. Its perimeter is:

Correct Answer: B. 42 cm
Perimeter = 2(l+b).

Question: A rectangle has length 16 cm and breadth 5 cm. Its perimeter is:

A. 80 cm

B. 42 cm

C. 21 cm

D. 160 cm

Correct Answer: B. 42 cmExplanation: Perimeter = 2(l+b).

View Question WhatsApp Share

Free MCQs with Answers | Military Brat Defence Academy

Electrolysis uses electric current to drive a:

An electrochemical cell converts chemical energy into:

An atom has atomic number 10. Its number of protons is:

A solution has pH 2. It is:

An element X has valency 1. If oxygen has valency 2, which statement is useful while writing the simplest oxide formula?

Buoyant force on an immersed body equals the weight of:

Pressure is defined as:

Kinetic energy of a body depends on:

A sample has mass 400 g and volume 50 cm³. Density is:

A current of 2 A flows through a resistance of 3 Ω. The voltage is:

A force of 50 N moves an object 2 m in the force direction. Work done is:

An object has initial velocity 3 m/s and acceleration 4 m/s² for 2 s. Final velocity is:

The binary representation of decimal 10 is:

A bag has 2 red and 5 blue balls. Probability of drawing a red ball is:

The median of 32, 35, 38, 41, 44 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:

The value of sin 45° is:

The circumference of a circle of radius 3 cm is:

The sum of the interior angles of a triangle is:

A rectangle has length 16 cm and breadth 5 cm. Its perimeter is:

Free MCQs with Answers and Explanations