Q. Which of the following is NOT a type of crystal system? (2021)
-
A.
Cubic
-
B.
Tetragonal
-
C.
Hexagonal
-
D.
Quadratic
Solution
Quadratic is not a recognized type of crystal system; the correct systems include cubic, tetragonal, hexagonal, orthorhombic, and others.
Correct Answer: D — Quadratic
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Q. Which of the following is NOT a type of crystalline solid? (2021)
-
A.
Ionic
-
B.
Molecular
-
C.
Amorphous
-
D.
Metallic
Solution
Amorphous solids do not have a long-range order and are not classified as crystalline solids.
Correct Answer: C — Amorphous
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Q. Which of the following is NOT a type of inheritance pattern? (2021)
-
A.
Incomplete dominance
-
B.
Codominance
-
C.
Polygenic inheritance
-
D.
Transgenic inheritance
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
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
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
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
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
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
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 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
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
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 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
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
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
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
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
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 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
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
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
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
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
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
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 unit of skeletal muscle? (2021)
-
A.
Sarcomere
-
B.
Myofibril
-
C.
Muscle Fiber
-
D.
Fascicle
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
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
Solution
Beryllium (Be) is the lightest alkaline earth metal.
Correct Answer: D — Beryllium
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Q. Which of the following is the main component of plasma? (2022)
-
A.
Water
-
B.
Proteins
-
C.
Electrolytes
-
D.
Nutrients
Solution
Plasma is composed of approximately 90% water, with proteins, electrolytes, and nutrients making up the remaining 10%.
Correct Answer: A — Water
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Q. Which of the following is the most abundant element in the universe? (2020)
-
A.
Oxygen
-
B.
Hydrogen
-
C.
Carbon
-
D.
Helium
Solution
Hydrogen is the most abundant element in the universe, making up about 75% of its elemental mass.
Correct Answer: B — Hydrogen
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Q. Which of the following is the most abundant isotope of hydrogen? (2023)
-
A.
Protium
-
B.
Deuterium
-
C.
Tritium
-
D.
Hydrogen-3
Solution
Protium, which has no neutrons, is the most abundant isotope of hydrogen, making up about 99.98% of hydrogen found in nature.
Correct Answer: A — Protium
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Q. Which of the following is the most acidic oxide? (2022)
-
A.
P2O5
-
B.
SO2
-
C.
CO2
-
D.
SiO2
Solution
P2O5 (phosphorus pentoxide) is the most acidic oxide among the given options.
Correct Answer: A — P2O5
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Q. Which of the following is the most electronegative element? (2023)
-
A.
Fluorine
-
B.
Oxygen
-
C.
Nitrogen
-
D.
Chlorine
Solution
Fluorine is the most electronegative element in the periodic table.
Correct Answer: A — Fluorine
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