Q. In which direction does the magnetic field line emerge from a bar magnet? (2022)
-
A.
From North to South
-
B.
From South to North
-
C.
In a circular path
-
D.
Randomly
Solution
Magnetic field lines emerge from the north pole and enter the south pole of a bar magnet.
Correct Answer: A — From North to South
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Q. In which direction does the magnetic field point inside a solenoid carrying current? (2023)
-
A.
From south to north
-
B.
From north to south
-
C.
Perpendicular to the axis
-
D.
It is zero
Solution
Inside a solenoid, the magnetic field lines run from the north pole to the south pole, similar to a bar magnet.
Correct Answer: B — From north to south
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Q. In which group of plants do you find true roots, stems, and leaves? (2020)
-
A.
Bryophytes
-
B.
Pteridophytes
-
C.
Gymnosperms
-
D.
All of the above
Solution
Gymnosperms and pteridophytes both have true roots, stems, and leaves, while bryophytes do not.
Correct Answer: D — All of the above
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Q. In which kingdom would you classify mushrooms? (2022)
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A.
Animalia
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B.
Plantae
-
C.
Fungi
-
D.
Protista
Solution
Mushrooms are classified in the kingdom Fungi, which includes all fungi, including yeasts and molds.
Correct Answer: C — Fungi
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Q. In which of the following conditions does the entropy of a system increase? (2022)
-
A.
When a gas is compressed
-
B.
When a solid melts
-
C.
When a liquid freezes
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D.
When a gas is cooled
Solution
The entropy of a system increases when a solid melts into a liquid, as the disorder of the system increases.
Correct Answer: B — When a solid melts
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Q. In which of the following does external fertilization occur? (2019)
-
A.
Frogs
-
B.
Humans
-
C.
Birds
-
D.
Reptiles
Solution
Frogs typically exhibit external fertilization, where eggs and sperm are released into the water.
Correct Answer: A — Frogs
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Q. In which of the following organisms does binary fission occur? (2019)
-
A.
Yeast
-
B.
Amoeba
-
C.
Hydra
-
D.
Starfish
Solution
Binary fission is a form of asexual reproduction commonly seen in unicellular organisms like Amoeba.
Correct Answer: B — Amoeba
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Q. In which of the following organisms does external fertilization occur? (2021)
-
A.
Frog
-
B.
Human
-
C.
Dog
-
D.
Cat
Solution
Frogs exhibit external fertilization where eggs and sperm are released into the water.
Correct Answer: A — Frog
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Q. In which of the following processes is adsorption utilized? (2023)
-
A.
Water purification
-
B.
Sublimation
-
C.
Distillation
-
D.
Filtration
Solution
Adsorption is widely used in water purification processes to remove impurities.
Correct Answer: A — Water purification
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Q. In which of the following processes is the enthalpy change (ΔH) equal to the heat absorbed at constant pressure? (2019)
-
A.
Isothermal process
-
B.
Isochoric process
-
C.
Isobaric process
-
D.
Adiabatic process
Solution
In an isobaric process, the enthalpy change (ΔH) is equal to the heat absorbed or released at constant pressure.
Correct Answer: C — Isobaric process
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Q. In which part of the flower does fertilization occur? (2019)
-
A.
Stamen
-
B.
Ovary
-
C.
Style
-
D.
Petal
Solution
Fertilization occurs in the ovary, where the male gamete from the pollen fuses with the female gamete in the ovule.
Correct Answer: B — Ovary
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Q. In which part of the plant does most of the photosynthesis occur?
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A.
Roots
-
B.
Stems
-
C.
Leaves
-
D.
Flowers
Solution
Most of the photosynthesis occurs in the leaves, where chloroplasts are abundant.
Correct Answer: C — Leaves
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Q. In which part of the plant does most respiration occur? (2020)
-
A.
Roots
-
B.
Leaves
-
C.
Stems
-
D.
Flowers
Solution
Most respiration occurs in the roots, where energy is needed for nutrient uptake and growth.
Correct Answer: A — Roots
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Q. In which part of the plant does most transpiration occur?
-
A.
Roots
-
B.
Stems
-
C.
Leaves
-
D.
Flowers
Solution
Most transpiration occurs in the leaves, where stomata are located to facilitate gas exchange and water loss.
Correct Answer: C — Leaves
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Q. In which part of the plant does most water absorption occur?
-
A.
Leaves
-
B.
Stems
-
C.
Roots
-
D.
Flowers
Solution
Most water absorption occurs in the roots, where root hairs increase the surface area for absorption.
Correct Answer: C — Roots
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Q. In which part of the plant does respiration primarily occur? (2020)
-
A.
Roots
-
B.
Leaves
-
C.
Stems
-
D.
All parts
Solution
Respiration occurs in all parts of the plant, including roots, leaves, and stems.
Correct Answer: D — All parts
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Q. In which phase do sister chromatids separate and move to opposite poles of the cell? (2019)
-
A.
Prophase
-
B.
Metaphase
-
C.
Anaphase
-
D.
Telophase
Solution
During Anaphase, sister chromatids are pulled apart and move towards opposite poles of the cell.
Correct Answer: C — Anaphase
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Q. In which phase do sister chromatids separate and move to opposite poles? (2019)
-
A.
Prophase
-
B.
Metaphase
-
C.
Anaphase
-
D.
Telophase
Solution
During Anaphase, sister chromatids are pulled apart and move toward opposite poles of the cell.
Correct Answer: C — Anaphase
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Q. In which phase do sister chromatids separate and move towards opposite poles? (2022)
-
A.
Prophase
-
B.
Metaphase
-
C.
Anaphase
-
D.
Telophase
Solution
During Anaphase, sister chromatids are pulled apart and move towards opposite poles of the cell.
Correct Answer: C — Anaphase
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Q. In which phase of the cell cycle does cytokinesis occur? (2021)
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A.
G1 phase
-
B.
S phase
-
C.
M phase
-
D.
G2 phase
Solution
Cytokinesis occurs during the M phase, following mitosis, to divide the cytoplasm and form two daughter cells.
Correct Answer: C — M phase
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Q. In which phase of the cell cycle does the cell spend the majority of its life? (2021)
-
A.
M phase
-
B.
G1 phase
-
C.
S phase
-
D.
G2 phase
Solution
The G1 phase is where the cell spends most of its life, performing normal functions and growing.
Correct Answer: B — G1 phase
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Q. In which process does a substance change from solid to gas without becoming liquid? (2022)
-
A.
Melting
-
B.
Sublimation
-
C.
Condensation
-
D.
Evaporation
Solution
The process in which a substance changes from solid to gas without becoming liquid is called sublimation.
Correct Answer: B — Sublimation
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Q. In which process does a substance change from solid to gas? (2022)
-
A.
Melting
-
B.
Sublimation
-
C.
Evaporation
-
D.
Condensation
Solution
The process in which a substance changes from solid to gas is called sublimation.
Correct Answer: B — Sublimation
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Q. In which state of matter do particles have the highest energy? (2023)
-
A.
Solid
-
B.
Liquid
-
C.
Gas
-
D.
Bose-Einstein Condensate
Solution
Gas particles have the highest energy compared to solids and liquids, allowing them to move freely and occupy more space.
Correct Answer: C — Gas
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Q. In which state of matter do particles have the least amount of energy?
-
A.
Solid
-
B.
Liquid
-
C.
Gas
-
D.
Plasma
Solution
Particles in a solid have the least amount of energy compared to liquids, gases, and plasma.
Correct Answer: A — Solid
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Q. In which state of matter do particles have the strongest intermolecular forces? (2023)
-
A.
Gas
-
B.
Liquid
-
C.
Solid
-
D.
Plasma
Solution
In solids, particles are held together by strong intermolecular forces, giving them a definite shape and volume.
Correct Answer: C — Solid
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Q. In which state of matter do particles move freely and are far apart? (2021)
-
A.
Solid
-
B.
Liquid
-
C.
Gas
-
D.
None of the above
Solution
In gases, particles move freely and are far apart compared to solids and liquids.
Correct Answer: C — Gas
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Q. In which type of collision is kinetic energy conserved? (2019)
-
A.
Elastic collision
-
B.
Inelastic collision
-
C.
Perfectly inelastic collision
-
D.
All of the above
Solution
In an elastic collision, both momentum and kinetic energy are conserved.
Correct Answer: A — Elastic collision
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Q. In which type of population growth does the growth rate decrease as the population reaches its carrying capacity? (2019)
-
A.
Exponential growth
-
B.
Logistic growth
-
C.
Linear growth
-
D.
Cyclic growth
Solution
Logistic growth describes a population that grows rapidly at first and then slows as it approaches the carrying capacity.
Correct Answer: B — Logistic growth
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Q. In which type of reproduction do offspring inherit traits from both parents? (2020)
-
A.
Asexual reproduction
-
B.
Sexual reproduction
-
C.
Budding
-
D.
Fragmentation
Solution
In sexual reproduction, offspring inherit genetic material from both parents, leading to genetic variation.
Correct Answer: B — Sexual reproduction
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