Q. Which plant hormone is known for its role in stress responses? (2023)
A.
Gibberellins
B.
Auxins
C.
Abscisic acid
D.
Cytokinins
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Solution
Abscisic acid is known for its role in stress responses, particularly in drought conditions.
Correct Answer: C — Abscisic acid
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Q. Which plant hormone is known to delay senescence in leaves? (2022)
A.
Gibberellins
B.
Cytokinins
C.
Ethylene
D.
Abscisic acid
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Solution
Cytokinins are known to delay senescence and promote cell division in plants.
Correct Answer: B — Cytokinins
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Q. Which plant hormone is known to promote fruit ripening? (2022)
A.
Auxins
B.
Cytokinins
C.
Ethylene
D.
Gibberellins
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Solution
Ethylene is the hormone that promotes fruit ripening and is also involved in the senescence of leaves.
Correct Answer: C — Ethylene
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Q. Which plant hormone is primarily associated with apical dominance? (2023)
A.
Auxins
B.
Cytokinins
C.
Gibberellins
D.
Ethylene
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Solution
Auxins are responsible for apical dominance, suppressing the growth of lateral buds.
Correct Answer: A — Auxins
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Q. Which plant hormone is primarily involved in apical dominance? (2023)
A.
Auxins
B.
Cytokinins
C.
Gibberellins
D.
Ethylene
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Solution
Auxins are primarily responsible for apical dominance, suppressing the growth of lateral buds.
Correct Answer: A — Auxins
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Q. Which plant hormone is primarily involved in the elongation of stems? (2023)
A.
Ethylene
B.
Gibberellins
C.
Cytokinins
D.
Abscisic acid
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Solution
Gibberellins are primarily responsible for stem elongation by promoting cell division and elongation.
Correct Answer: B — Gibberellins
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Q. Which plant hormone is primarily involved in the response to light? (2022)
A.
Auxins
B.
Ethylene
C.
Gibberellins
D.
Abscisic acid
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Solution
Auxins are primarily involved in the plant's response to light, promoting growth towards the light source.
Correct Answer: A — Auxins
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Q. Which plant hormone is primarily responsible for apical dominance? (2023)
A.
Auxins
B.
Cytokinins
C.
Gibberellins
D.
Ethylene
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Solution
Auxins are responsible for apical dominance, inhibiting the growth of lateral buds.
Correct Answer: A — Auxins
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Q. Which policy was introduced by the British to control the Indian press and curb dissent during the early 20th century?
A.
The Vernacular Press Act
B.
The Indian Press Act
C.
The Rowlatt Act
D.
The Arms Act
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Solution
The Vernacular Press Act of 1878 was aimed at curbing the freedom of the press in Indian languages, reflecting the British government's attempt to control dissent.
Correct Answer: A — The Vernacular Press Act
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Q. Which polymer is commonly used in 3D printing?
A.
PLA
B.
PVC
C.
Nylon
D.
Polyethylene
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Solution
PLA (Polylactic Acid) is a commonly used polymer in 3D printing due to its ease of use and biodegradability.
Correct Answer: A — PLA
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Q. Which polymer is commonly used in the production of fibers for clothing? (2020)
A.
Polyethylene
B.
Nylon
C.
Polystyrene
D.
Polyvinyl acetate
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Solution
Nylon is commonly used in the production of fibers for clothing due to its strength and elasticity.
Correct Answer: B — Nylon
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Q. Which polymer is commonly used in the production of non-stick cookware? (2023)
A.
Polyethylene
B.
Polytetrafluoroethylene (PTFE)
C.
Polypropylene
D.
Polyvinyl chloride (PVC)
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Solution
Polytetrafluoroethylene (PTFE), commonly known as Teflon, is used in non-stick cookware due to its low friction properties.
Correct Answer: B — Polytetrafluoroethylene (PTFE)
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Q. Which polymer is commonly used in the production of plastic bottles?
A.
Polypropylene
B.
Polyethylene terephthalate
C.
Polystyrene
D.
Polyvinyl chloride
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Solution
Polyethylene terephthalate (PET) is commonly used in the production of plastic bottles.
Correct Answer: B — Polyethylene terephthalate
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Q. Which polymer is commonly used in the production of rubber?
A.
Polyethylene
B.
Natural rubber
C.
Polystyrene
D.
Polyvinyl chloride
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Solution
Natural rubber is a polymer that is widely used in the production of rubber products.
Correct Answer: B — Natural rubber
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Q. Which polymer is commonly used in the production of synthetic fibers? (2023)
A.
Polyethylene
B.
Nylon
C.
Polystyrene
D.
Polyvinyl acetate
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Solution
Nylon is a synthetic polymer widely used in the production of synthetic fibers for clothing and textiles.
Correct Answer: B — Nylon
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Q. Which polymer is known for its high resistance to heat and chemicals?
A.
Polyethylene
B.
Teflon
C.
Nylon
D.
Acrylic
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Solution
Teflon is known for its high resistance to heat and chemicals.
Correct Answer: B — Teflon
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Q. Which polymer is known for its high resistance to heat?
A.
Polyethylene
B.
Teflon
C.
Polypropylene
D.
PVC
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Solution
Teflon (PTFE) is known for its high heat resistance and non-stick properties.
Correct Answer: B — Teflon
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Q. Which preposition is used to indicate a relationship? (2021)
A.
with
B.
at
C.
in
D.
on
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Solution
'With' is used to indicate a relationship or association between two entities.
Correct Answer: A — with
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Q. Which preposition is used to indicate a specific time? (2021)
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Solution
The preposition 'at' is used to indicate a specific time, such as 'at 5 PM'.
Correct Answer: A — at
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Q. Which preposition is used to show direction? (2020)
A.
to
B.
with
C.
about
D.
for
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Solution
The preposition 'to' is used to show direction, as in 'going to the store'.
Correct Answer: A — to
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Q. Which principle explains why a ship floats on water?
A.
Archimedes' principle
B.
Bernoulli's principle
C.
Pascal's principle
D.
Newton's third law
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Solution
Archimedes' principle states that a body submerged in a fluid experiences an upward buoyant force equal to the weight of the fluid displaced.
Correct Answer: A — Archimedes' principle
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Q. Which principle states that the pressure in a fluid decreases as the fluid's velocity increases? (2022)
A.
Bernoulli's Principle
B.
Archimedes' Principle
C.
Pascal's Principle
D.
Hydrostatic Principle
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Solution
Bernoulli's Principle states that an increase in the speed of a fluid occurs simultaneously with a decrease in pressure.
Correct Answer: A — Bernoulli's Principle
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Q. Which process describes the movement of water from the roots to the leaves of a plant?
A.
Translocation
B.
Transpiration
C.
Absorption
D.
Capillarity
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Solution
Translocation refers to the movement of water and nutrients through the plant, specifically from the roots to the leaves.
Correct Answer: A — Translocation
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Q. Which process do plants use to convert sunlight into chemical energy? (2019)
A.
Respiration
B.
Photosynthesis
C.
Fermentation
D.
Transpiration
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Solution
Photosynthesis is the process by which plants convert sunlight into chemical energy stored in glucose.
Correct Answer: B — Photosynthesis
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Q. Which process do plants use to convert sunlight into energy? (2022)
A.
Cellular respiration
B.
Photosynthesis
C.
Fermentation
D.
Transpiration
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Solution
Plants use photosynthesis to convert sunlight into chemical energy.
Correct Answer: B — Photosynthesis
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Q. Which process involves a change in temperature due to heat transfer?
A.
Isothermal process
B.
Adiabatic process
C.
Isobaric process
D.
Isochoric process
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Solution
An isobaric process occurs at constant pressure and can involve a change in temperature due to heat transfer.
Correct Answer: C — Isobaric process
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Q. Which process involves a change in temperature without a change in heat content?
A.
Isothermal process
B.
Adiabatic process
C.
Isochoric process
D.
Isobaric process
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Solution
In an adiabatic process, there is no heat exchange with the surroundings, leading to a change in temperature.
Correct Answer: B — Adiabatic process
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Q. Which process involves a change in temperature without a change in phase?
A.
Melting
B.
Boiling
C.
Heating
D.
Condensation
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Solution
Heating involves a change in temperature without a change in phase.
Correct Answer: C — Heating
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Q. Which process involves the movement of water from the roots to the leaves?
A.
Transpiration
B.
Photosynthesis
C.
Respiration
D.
Germination
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Solution
Transpiration is the process through which water is absorbed by plant roots and then evaporated from the leaves, creating a continuous flow of water.
Correct Answer: A — Transpiration
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Q. Which process involves the transfer of heat through the movement of fluids?
A.
Conduction
B.
Convection
C.
Radiation
D.
Insulation
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Solution
Convection is the process of heat transfer through the movement of fluids.
Correct Answer: B — Convection
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