Q. Which enzyme is secreted by the pancreas to aid in protein digestion? (2023)
A.
Amylase
B.
Pepsin
C.
Trypsin
D.
Lipase
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Solution
Trypsin is a pancreatic enzyme that helps in the digestion of proteins in the small intestine.
Correct Answer: C — Trypsin
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Q. Which enzyme is secreted by the pancreas to digest proteins? (2023)
A.
Amylase
B.
Pepsin
C.
Trypsin
D.
Lipase
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Solution
Trypsin is a proteolytic enzyme secreted by the pancreas that digests proteins in the small intestine.
Correct Answer: C — Trypsin
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Q. Which factor does NOT affect the rate of adsorption? (2023)
A.
Temperature
B.
Surface area of adsorbent
C.
Concentration of adsorbate
D.
Color of adsorbent
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Solution
The color of the adsorbent does not affect the rate of adsorption, while temperature, surface area, and concentration do.
Correct Answer: D — Color of adsorbent
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Q. Which force is primarily responsible for holding the nucleus together? (2022)
A.
Gravitational force
B.
Electromagnetic force
C.
Weak nuclear force
D.
Strong nuclear force
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Solution
The strong nuclear force is responsible for holding the protons and neutrons together in the nucleus.
Correct Answer: D — Strong nuclear force
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Q. Which force is responsible for holding the nucleus together? (2019)
A.
Gravitational force
B.
Electromagnetic force
C.
Weak nuclear force
D.
Strong nuclear force
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Solution
The strong nuclear force is responsible for holding the protons and neutrons together in the nucleus.
Correct Answer: D — Strong nuclear force
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Q. Which gas behaves most like an ideal gas under standard conditions? (2019)
A.
Helium
B.
Carbon dioxide
C.
Water vapor
D.
Ammonia
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Solution
Helium behaves most like an ideal gas under standard conditions due to its low intermolecular forces and small size.
Correct Answer: A — Helium
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Q. Which gas behaves most like an ideal gas? (2020)
A.
Helium
B.
Carbon dioxide
C.
Water vapor
D.
Ammonia
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Solution
Helium behaves most like an ideal gas because it is a monoatomic gas with weak intermolecular forces.
Correct Answer: A — Helium
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Q. Which gas is a byproduct of photosynthesis? (2023)
A.
Carbon dioxide
B.
Nitrogen
C.
Oxygen
D.
Methane
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Solution
Oxygen is released as a byproduct of photosynthesis during the light-dependent reactions.
Correct Answer: C — Oxygen
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Q. Which gas is evolved when an acid reacts with a carbonate? (2022)
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Solution
When an acid reacts with a carbonate, carbon dioxide (CO2) gas is evolved.
Correct Answer: C — CO2
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Q. Which gas is primarily responsible for the regulation of breathing rate? (2022)
A.
Oxygen
B.
Carbon dioxide
C.
Nitrogen
D.
Hydrogen
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Solution
Carbon dioxide levels in the blood are the primary factor that regulates the rate of breathing.
Correct Answer: B — Carbon dioxide
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Q. Which gas is produced during the electrolysis of water? (2020) 2020
A.
Oxygen
B.
Nitrogen
C.
Carbon Dioxide
D.
Hydrogen
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Solution
During the electrolysis of water, oxygen is produced at the anode.
Correct Answer: A — Oxygen
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Q. Which gas is produced during the electrolysis of water? (2022)
A.
Oxygen
B.
Nitrogen
C.
Carbon Dioxide
D.
Hydrogen
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Solution
During the electrolysis of water, oxygen is produced at the anode.
Correct Answer: A — Oxygen
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Q. Which gas is produced when an acid reacts with a metal? (2023) 2023
A.
Oxygen
B.
Hydrogen
C.
Nitrogen
D.
Carbon Dioxide
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Solution
When an acid reacts with a metal, hydrogen gas is produced.
Correct Answer: B — Hydrogen
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Q. Which gas is produced when hydrochloric acid reacts with sodium bicarbonate? (2020)
A.
Oxygen
B.
Carbon Dioxide
C.
Hydrogen
D.
Nitrogen
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Solution
The reaction between hydrochloric acid (HCl) and sodium bicarbonate (NaHCO3) produces carbon dioxide (CO2) as one of the products.
Correct Answer: B — Carbon Dioxide
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Q. Which gas is released as a byproduct of photosynthesis? (2022)
A.
Carbon dioxide
B.
Oxygen
C.
Nitrogen
D.
Methane
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Solution
Oxygen is released as a byproduct of photosynthesis during the light-dependent reactions.
Correct Answer: B — Oxygen
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Q. Which gas is released during the process of respiration in plants? (2022)
A.
Oxygen
B.
Carbon dioxide
C.
Nitrogen
D.
Hydrogen
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Solution
Carbon dioxide is released as a byproduct during the process of respiration in plants.
Correct Answer: B — Carbon dioxide
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Q. Which gas law relates pressure and temperature of a gas at constant volume?
A.
Boyle's Law
B.
Charles's Law
C.
Gay-Lussac's Law
D.
Avogadro's Law
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Solution
Gay-Lussac's Law states that the pressure of a gas is directly proportional to its temperature at constant volume.
Correct Answer: C — Gay-Lussac's Law
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Q. Which gas would have the highest root mean square speed at the same temperature? (2019)
A.
Oxygen (O2)
B.
Nitrogen (N2)
C.
Hydrogen (H2)
D.
Carbon Dioxide (CO2)
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Solution
Hydrogen (H2) has the lowest molar mass among the given gases, thus it has the highest root mean square speed at the same temperature.
Correct Answer: C — Hydrogen (H2)
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Q. Which gland is known as the 'master gland' of the endocrine system? (2021)
A.
Thyroid
B.
Pituitary
C.
Adrenal
D.
Pancreas
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Solution
The pituitary gland is often referred to as the 'master gland' because it regulates the functions of other endocrine glands.
Correct Answer: B — Pituitary
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Q. Which group in the periodic table contains the noble gases? (2023)
A.
Group 1
B.
Group 2
C.
Group 17
D.
Group 18
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Solution
Noble gases are found in Group 18 of the periodic table, characterized by their lack of reactivity due to having a full valence shell.
Correct Answer: D — Group 18
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Q. Which group of organisms is known for being autotrophic? (2023)
A.
Animals
B.
Fungi
C.
Plants
D.
Bacteria
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Solution
Plants are known for being autotrophic as they can produce their own food through photosynthesis.
Correct Answer: C — Plants
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Q. Which group of organisms is known for their ability to live in extreme environments? (2023)
A.
Eubacteria
B.
Archaebacteria
C.
Fungi
D.
Protozoa
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Solution
Archaebacteria are known for their ability to thrive in extreme environments.
Correct Answer: B — Archaebacteria
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Q. Which group of plants is known for having vascular tissues? (2019)
A.
Bryophytes
B.
Pteridophytes
C.
Algae
D.
Mosses
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Solution
Pteridophytes are the first group of plants to develop vascular tissues, which help in the transport of water and nutrients.
Correct Answer: B — Pteridophytes
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Q. Which group of plants is known for producing seeds without flowers? (2023)
A.
Angiosperms
B.
Gymnosperms
C.
Bryophytes
D.
Pteridophytes
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Solution
Gymnosperms are known for producing seeds that are not enclosed in flowers.
Correct Answer: B — Gymnosperms
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Q. Which haloalkane has the highest boiling point?
A.
CH3Cl
B.
C2H5Br
C.
C3H7Cl
D.
C4H9I
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Solution
C4H9I has the highest boiling point due to the larger molecular size and stronger van der Waals forces.
Correct Answer: D — C4H9I
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Q. Which haloalkane is most likely to undergo elimination reactions? (2023)
A.
1-bromopropane
B.
2-bromobutane
C.
3-bromobutane
D.
Bromobenzene
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Solution
3-bromobutane is more likely to undergo elimination reactions due to the presence of a tertiary carbon.
Correct Answer: C — 3-bromobutane
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Q. Which hormone is involved in the process of apical dominance? (2019)
A.
Gibberellins
B.
Auxins
C.
Cytokinins
D.
Ethylene
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Solution
Auxins are primarily responsible for maintaining apical dominance by inhibiting the growth of lateral buds.
Correct Answer: B — Auxins
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Q. Which hormone is involved in the process of fruit ripening? (2020)
A.
Gibberellins
B.
Auxins
C.
Ethylene
D.
Cytokinins
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Solution
Ethylene is the hormone that plays a key role in the ripening of fruits.
Correct Answer: C — Ethylene
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Q. Which hormone is involved in the regulation of apical dominance? (2019)
A.
Auxins
B.
Cytokinins
C.
Gibberellins
D.
Ethylene
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Solution
Auxins play a crucial role in maintaining apical dominance by inhibiting the growth of lateral buds.
Correct Answer: A — Auxins
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Q. Which hormone is involved in the regulation of calcium levels in the blood? (2023)
A.
Calcitonin
B.
Parathyroid hormone
C.
Insulin
D.
Glucagon
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Solution
Parathyroid hormone (PTH) is responsible for increasing blood calcium levels by promoting calcium release from bones and increasing calcium absorption in the intestines.
Correct Answer: B — Parathyroid hormone
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