Q. Which of the following is NOT a type of inheritance pattern? (2021)
A.
Incomplete dominance
B.
Codominance
C.
Polygenic inheritance
D.
Transgenic inheritance
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Solution
Transgenic inheritance is not a recognized pattern of inheritance; it refers to organisms that have been genetically modified.
Correct Answer:
D
— Transgenic inheritance
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Q. Which of the following is NOT a type of simple permanent tissue? (2019)
A.
Parenchyma
B.
Collenchyma
C.
Sclerenchyma
D.
Xylem
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Solution
Xylem is a complex tissue, while parenchyma, collenchyma, and sclerenchyma are types of simple permanent tissues.
Correct Answer:
D
— Xylem
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Q. Which of the following is NOT a type of transport in plants?
A.
Active transport
B.
Passive transport
C.
Facilitated diffusion
D.
Electrolysis
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Solution
Electrolysis is not a type of transport in plants; it is a chemical process involving the decomposition of substances.
Correct Answer:
D
— Electrolysis
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Q. Which of the following is NOT a use of microbes in agriculture? (2023)
A.
Nitrogen fixation
B.
Biopesticides
C.
Soil fertility enhancement
D.
Water pollution
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Solution
Water pollution is not a use of microbes; rather, microbes can help improve soil fertility and act as biopesticides.
Correct Answer:
D
— Water pollution
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Q. Which of the following is NOT a use of microbes in human welfare? (2023)
A.
Bioremediation
B.
Food production
C.
Genetic engineering
D.
Causing infections
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Solution
Causing infections is not a beneficial use of microbes; it is a harmful effect.
Correct Answer:
D
— Causing infections
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Q. Which of the following is not an alkaline earth metal? (2020)
A.
Barium
B.
Strontium
C.
Calcium
D.
Aluminum
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Solution
Aluminum (Al) is not an alkaline earth metal; it is a post-transition metal.
Correct Answer:
D
— Aluminum
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Q. Which of the following is not found in prokaryotic cells? (2022)
A.
Ribosomes
B.
Nucleus
C.
Plasma Membrane
D.
Cytoplasm
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Solution
Prokaryotic cells do not have a nucleus; their genetic material is not enclosed within a membrane.
Correct Answer:
B
— Nucleus
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Q. Which of the following is the conjugate of the complex number 2 - 3i? (2020)
A.
2 + 3i
B.
2 - 3i
C.
3 - 2i
D.
3 + 2i
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Solution
The conjugate of a complex number a + bi is a - bi. Thus, the conjugate of 2 - 3i is 2 + 3i.
Correct Answer:
A
— 2 + 3i
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Q. Which of the following is the conjugate of the complex number 5 - 3i? (2020)
A.
5 + 3i
B.
5 - 3i
C.
-5 + 3i
D.
-5 - 3i
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Solution
The conjugate of a complex number a + bi is a - bi. Thus, the conjugate of 5 - 3i is 5 + 3i.
Correct Answer:
A
— 5 + 3i
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Q. Which of the following is the correct dimension for pressure? (2021)
A.
M^1L^-1T^-2
B.
M^1L^1T^-2
C.
M^1L^0T^-2
D.
M^0L^1T^-1
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Solution
Pressure is defined as force per unit area, hence its dimension is M^1L^-1T^-2.
Correct Answer:
A
— M^1L^-1T^-2
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Q. Which of the following is the correct dimension for velocity? (2021)
A.
M^1L^1T^-1
B.
M^0L^1T^-1
C.
M^1L^0T^-1
D.
M^1L^1T^0
Show solution
Solution
The dimension of velocity is M^0L^1T^-1.
Correct Answer:
B
— M^0L^1T^-1
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Q. Which of the following is the correct dimensional formula for acceleration? (2022)
A.
[M^0 L^1 T^-2]
B.
[M^1 L^0 T^-2]
C.
[M^1 L^1 T^-1]
D.
[M^0 L^0 T^-2]
Show solution
Solution
Acceleration is defined as the change in velocity per unit time, so its dimensional formula is [M^0 L^1 T^-2].
Correct Answer:
A
— [M^0 L^1 T^-2]
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Q. Which of the following is the correct dimensional formula for energy? (2023)
A.
[M^1 L^2 T^-2]
B.
[M^1 L^1 T^-1]
C.
[M^0 L^2 T^-1]
D.
[M^2 L^1 T^-2]
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Solution
Energy has the dimensional formula [M^1 L^2 T^-2], as it is defined as work done, which is force times distance.
Correct Answer:
A
— [M^1 L^2 T^-2]
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Q. Which of the following is the correct dimensional formula for frequency? (2021)
A.
[M^0 L^0 T^-1]
B.
[M^0 L^1 T^-1]
C.
[M^1 L^0 T^-1]
D.
[M^0 L^0 T^1]
Show solution
Solution
Frequency has the dimensional formula [M^0 L^0 T^-1].
Correct Answer:
A
— [M^0 L^0 T^-1]
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Q. Which of the following is the correct expression for gravitational potential energy (U) of an object of mass m at a height h? (2020)
A.
mgh
B.
mg/h
C.
mgh^2
D.
m^2gh
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Solution
The gravitational potential energy is given by U = mgh, where h is the height above the reference point.
Correct Answer:
A
— mgh
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Q. Which of the following is the correct IUPAC name for CH3-CH2-CH(OH)-CH3? (2020)
A.
2-butanol
B.
1-butanol
C.
3-butanol
D.
2-pentanol
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Solution
The compound CH3-CH2-CH(OH)-CH3 is 2-butanol, as the hydroxyl group is on the second carbon.
Correct Answer:
A
— 2-butanol
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Q. Which of the following is the correct method to prepare phenol? (2022)
A.
Hydrolysis of chlorobenzene
B.
Oxidation of benzyl alcohol
C.
Reduction of benzoic acid
D.
Dehydration of phenyl ethanol
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Solution
Phenol can be prepared by the hydrolysis of chlorobenzene using sodium hydroxide.
Correct Answer:
A
— Hydrolysis of chlorobenzene
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Q. Which of the following is the correct order of magnitude for the speed of light? (2023)
A.
10^6 m/s
B.
10^8 m/s
C.
10^10 m/s
D.
10^12 m/s
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Solution
The speed of light is approximately 3 x 10^8 m/s.
Correct Answer:
B
— 10^8 m/s
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Q. Which of the following is the correct order of reactivity of haloalkanes in nucleophilic substitution reactions? (2023)
A.
R-I > R-Br > R-Cl > R-F
B.
R-F > R-Cl > R-Br > R-I
C.
R-Cl > R-Br > R-I > R-F
D.
R-Br > R-I > R-Cl > R-F
Show solution
Solution
The reactivity of haloalkanes in nucleophilic substitution reactions decreases in the order R-I > R-Br > R-Cl > R-F due to bond strength.
Correct Answer:
A
— R-I > R-Br > R-Cl > R-F
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Q. Which of the following is the correct order of reactivity of haloalkanes towards nucleophilic substitution? (2021)
A.
R-I > R-Br > R-Cl > R-F
B.
R-F > R-Cl > R-Br > R-I
C.
R-Cl > R-Br > R-I > R-F
D.
R-Br > R-I > R-Cl > R-F
Show solution
Solution
The reactivity of haloalkanes towards nucleophilic substitution is primarily determined by the bond strength of the carbon-halogen bond. Iodine has the weakest bond, making R-I the most reactive, followed by R-Br, R-Cl, and R-F.
Correct Answer:
A
— R-I > R-Br > R-Cl > R-F
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Q. Which of the following is the correct representation of 0.001 in scientific notation? (2023)
A.
1 x 10^-3
B.
1 x 10^3
C.
1 x 10^1
D.
1 x 10^-1
Show solution
Solution
0.001 can be represented as 1 x 10^-3 in scientific notation.
Correct Answer:
A
— 1 x 10^-3
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Q. Which of the following is the correct representation of the unit of energy? (2019)
A.
Joule
B.
Newton-meter
C.
Both A and B
D.
None of the above
Show solution
Solution
Both Joule and Newton-meter represent the same unit of energy.
Correct Answer:
C
— Both A and B
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Q. Which of the following is the correct structure for propan-2-one? (2020)
A.
CH3COCH3
B.
CH3CHO
C.
C2H5CHO
D.
C3H6O
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Solution
Propan-2-one, also known as acetone, has the structure CH3COCH3, indicating it is a ketone.
Correct Answer:
A
— CH3COCH3
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Q. Which of the following is the correct unit for measuring frequency? (2022)
A.
Hertz
B.
Joule
C.
Watt
D.
Newton
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Solution
The unit for measuring frequency is Hertz (Hz).
Correct Answer:
A
— Hertz
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Q. Which of the following is the correct unit for measuring pressure? (2020)
A.
Pascal
B.
Joule
C.
Newton
D.
Watt
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Solution
The SI unit for measuring pressure is Pascal (Pa).
Correct Answer:
A
— Pascal
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Q. Which of the following is the correct unit for pressure? (2020)
A.
Pascal
B.
Joule
C.
Newton
D.
Watt
Show solution
Solution
The SI unit for pressure is Pascal (Pa), which is equivalent to N/m².
Correct Answer:
A
— Pascal
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Q. Which of the following is the functional group of aldehydes? (2023) 2023
A.
-CHO
B.
-CO-
C.
-C=O
D.
-OH
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Solution
Aldehydes contain the functional group -CHO, which is characterized by a carbonyl group (C=O) bonded to a hydrogen atom.
Correct Answer:
A
— -CHO
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Q. Which of the following is the functional unit of skeletal muscle? (2021)
A.
Sarcomere
B.
Myofibril
C.
Muscle Fiber
D.
Fascicle
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Solution
The sarcomere is the basic functional unit of skeletal muscle, responsible for muscle contraction.
Correct Answer:
A
— Sarcomere
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Q. Which of the following is the largest artery in the human body? (2021)
A.
Pulmonary artery
B.
Aorta
C.
Coronary artery
D.
Femoral artery
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Solution
The aorta is the largest artery in the human body, carrying oxygenated blood from the heart to the rest of the body.
Correct Answer:
B
— Aorta
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Q. Which of the following is the lightest alkaline earth metal? (2019)
A.
Barium
B.
Calcium
C.
Magnesium
D.
Beryllium
Show solution
Solution
Beryllium (Be) is the lightest alkaline earth metal.
Correct Answer:
D
— Beryllium
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