Q. What is the main product when an alkene undergoes hydrohalogenation?
A.
Alcohol
B.
Haloalkane
C.
Alkane
D.
Alkyl halide
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Solution
The main product of hydrohalogenation of an alkene is a haloalkane.
Correct Answer:
B
— Haloalkane
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Q. What is the main purpose of the xylem in plants? (2020)
A.
Transport of food
B.
Transport of water
C.
Photosynthesis
D.
Storage of nutrients
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Solution
Xylem is responsible for the transport of water and dissolved minerals from the roots to the rest of the plant.
Correct Answer:
B
— Transport of water
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Q. What is the main reason for the occurrence of seasons on Earth?
A.
Distance from the Sun
B.
Tilt of the Earth's axis
C.
Revolution around the Sun
D.
Rotation of the Earth
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Solution
The main reason for the occurrence of seasons on Earth is the tilt of the Earth's axis, which affects the angle of sunlight received.
Correct Answer:
B
— Tilt of the Earth's axis
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Q. What is the main reason that gases fill their containers completely? (2023)
A.
Particles are tightly packed
B.
Particles are in fixed positions
C.
Particles move freely and rapidly
D.
Particles have high density
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Solution
Gases fill their containers completely because their particles move freely and rapidly, spreading out to occupy the available space.
Correct Answer:
C
— Particles move freely and rapidly
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Q. What is the main reason that solids maintain their shape? (2023)
A.
Particles are in constant motion
B.
Particles are tightly packed and vibrate in place
C.
Particles are loosely arranged
D.
Particles have high kinetic energy
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Solution
Solids maintain their shape because their particles are tightly packed and can only vibrate in place, preventing them from flowing.
Correct Answer:
B
— Particles are tightly packed and vibrate in place
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Q. What is the main role of antioxidants in nutrition?
A.
Provide energy
B.
Support immune function
C.
Prevent oxidative stress
D.
Aid digestion
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Solution
Antioxidants help prevent oxidative stress by neutralizing free radicals in the body.
Correct Answer:
C
— Prevent oxidative stress
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Q. What is the main use of aluminum in construction? (2020)
A.
Electrical wiring
B.
Structural components
C.
Piping
D.
Insulation
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Solution
Aluminum is widely used in construction for structural components due to its strength-to-weight ratio.
Correct Answer:
B
— Structural components
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Q. What is the maximum number of Fundamental Rights guaranteed by the Constitution of India?
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Solution
The Constitution of India originally provided for 7 Fundamental Rights, but the Right to Property was removed from the list, leaving 6 Fundamental Rights.
Correct Answer:
B
— 7
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Q. What is the maximum number of Fundamental Rights recognized by the Constitution of India? (2021)
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Solution
The Constitution of India recognizes 6 Fundamental Rights.
Correct Answer:
A
— 6
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Q. What is the maximum number of orbitals in the p subshell? (2019)
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Solution
The p subshell can hold a maximum of 3 orbitals.
Correct Answer:
B
— 3
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Q. What is the maximum strength of the Lok Sabha as per the Constitution of India? (2020)
A.
500
B.
550
C.
600
D.
700
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Solution
The maximum strength of the Lok Sabha is 550 members, as per Article 81 of the Indian Constitution.
Correct Answer:
B
— 550
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Q. What is the maximum strength of the Lok Sabha as per the Constitution?
A.
500
B.
550
C.
600
D.
450
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Solution
The maximum strength of the Lok Sabha is 552, which includes 530 members from the states and 20 from the Union territories.
Correct Answer:
B
— 550
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Q. What is the median of the following set of numbers: 3, 5, 7, 9, 11? (2022)
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Solution
To find the median, arrange the numbers in order: 3, 5, 7, 9, 11. The median is the middle number, which is 7.
Correct Answer:
B
— 7
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Q. What is the median of the following set of numbers: 3, 7, 9, 5, 11? (2020)
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Solution
Arranging the numbers: 3, 5, 7, 9, 11. The median is the middle value, which is 7.
Correct Answer:
B
— 7
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Q. What is the minimum age for a candidate to contest for the Lok Sabha elections in India? (2021)
A.
25 years
B.
30 years
C.
21 years
D.
18 years
Show solution
Solution
According to Article 84 of the Indian Constitution, the minimum age for a candidate to contest for the Lok Sabha is 25 years.
Correct Answer:
A
— 25 years
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Q. What is the minimum age required to be eligible for election as a member of the Lok Sabha in India?
A.
25 years
B.
30 years
C.
21 years
D.
18 years
Show solution
Solution
According to Article 84 of the Indian Constitution, the minimum age to be a member of the Lok Sabha is 25 years.
Correct Answer:
A
— 25 years
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Q. What is the minimum age required to be eligible for the Lok Sabha elections in India? (2021)
A.
18 years
B.
21 years
C.
25 years
D.
30 years
Show solution
Solution
According to Article 84 of the Indian Constitution, a person must be at least 25 years old to be eligible for the Lok Sabha elections.
Correct Answer:
C
— 25 years
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Q. What is the minimum age to be eligible for election as a member of the Lok Sabha in India?
A.
25 years
B.
30 years
C.
21 years
D.
18 years
Show solution
Solution
According to Article 84 of the Indian Constitution, the minimum age to be a member of the Lok Sabha is 25 years.
Correct Answer:
A
— 25 years
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Q. What is the minimum age to be eligible for the Lok Sabha elections in India? (2021)
A.
18 years
B.
21 years
C.
25 years
D.
30 years
Show solution
Solution
According to Article 84 of the Indian Constitution, a person must be at least 25 years old to be eligible for the Lok Sabha elections.
Correct Answer:
C
— 25 years
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Q. What is the minimum energy required to remove an electron from a hydrogen atom in its ground state? (Ionization energy = 13.6 eV) (2023)
A.
1.6 x 10^-19 J
B.
2.18 x 10^-18 J
C.
13.6 eV
D.
3.2 x 10^-19 J
Show solution
Solution
The minimum energy required to remove an electron from a hydrogen atom in its ground state is 13.6 eV.
Correct Answer:
C
— 13.6 eV
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Q. What is the next prime number after 7?
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Solution
The next prime number after 7 is 11.
Correct Answer:
D
— 11
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Q. What is the perimeter of a rectangle with a length of 8 units and a width of 3 units?
A.
22 units
B.
24 units
C.
20 units
D.
18 units
Show solution
Solution
Perimeter = 2 * (length + width) = 2 * (8 + 3) = 22 units.
Correct Answer:
A
— 22 units
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Q. What is the perimeter of a rectangle with length 8 units and width 3 units?
A.
22 units
B.
24 units
C.
20 units
D.
18 units
Show solution
Solution
Perimeter = 2 * (length + width) = 2 * (8 + 3) = 22 units.
Correct Answer:
A
— 22 units
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Q. What is the perimeter of a square with a side length of 4 cm?
A.
8 cm
B.
12 cm
C.
16 cm
D.
20 cm
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Solution
Perimeter of a square = 4 × side = 4 × 4 cm = 16 cm.
Correct Answer:
C
— 16 cm
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Q. What is the perimeter of a square with a side length of 6 cm? (2019)
A.
24 cm
B.
20 cm
C.
18 cm
D.
30 cm
Show solution
Solution
Perimeter = 4 * Side = 4 * 6 cm = 24 cm.
Correct Answer:
A
— 24 cm
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Q. What is the pH of a solution with a hydrogen ion concentration of 1 x 10^-7 M?
Show solution
Solution
pH = -log[H+] = -log(1 x 10^-7) = 7.
Correct Answer:
A
— 7
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Q. What is the phenomenon called when sound waves bounce off a surface? (2021)
A.
Refraction
B.
Reflection
C.
Diffraction
D.
Interference
Show solution
Solution
The bouncing back of sound waves from a surface is called reflection.
Correct Answer:
B
— Reflection
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Q. What is the potential difference across a 10-ohm resistor carrying a current of 3 A?
A.
30 V
B.
10 V
C.
3 V
D.
0.3 V
Show solution
Solution
Using Ohm's Law (V = I * R), V = 3 A * 10 Ω = 30 V.
Correct Answer:
A
— 30 V
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Q. What is the potential energy of a 2 kg mass at a height of 5 m? (g = 10 m/s²)
A.
100 J
B.
50 J
C.
20 J
D.
10 J
Show solution
Solution
Potential energy (PE) = mgh = 2 kg * 10 m/s² * 5 m = 100 J.
Correct Answer:
A
— 100 J
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Q. What is the power consumed by a device that operates at 12 volts and draws a current of 2 amperes? (2020)
A.
24 W
B.
12 W
C.
6 W
D.
48 W
Show solution
Solution
Power (P) is given by P = V * I. Thus, P = 12 V * 2 A = 24 W.
Correct Answer:
A
— 24 W
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