Q. What type of reproduction occurs in sponges? (2020)
-
A.
Asexual reproduction only
-
B.
Sexual reproduction only
-
C.
Both asexual and sexual reproduction
-
D.
None of the above
Solution
Sponges can reproduce both asexually through budding and sexually by producing gametes.
Correct Answer: C — Both asexual and sexual reproduction
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Q. What type of root system is found in monocots? (2021)
-
A.
Tap root system
-
B.
Fibrous root system
-
C.
Adventitious root system
-
D.
None of the above
Solution
Monocots typically have a fibrous root system, which consists of many thin roots.
Correct Answer: B — Fibrous root system
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Q. What type of semiconductor is formed by adding trivalent impurities? (2023)
-
A.
N-type
-
B.
P-type
-
C.
Intrinsic
-
D.
Superconductor
Solution
Adding trivalent impurities (like boron) to a semiconductor creates a p-type semiconductor.
Correct Answer: B — P-type
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Q. What type of solid is diamond classified as? (2022)
-
A.
Metallic solid
-
B.
Ionic solid
-
C.
Covalent network solid
-
D.
Molecular solid
Solution
Diamond is classified as a covalent network solid due to its strong covalent bonds forming a three-dimensional network.
Correct Answer: C — Covalent network solid
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Q. What type of structure do most natural polymers have?
-
A.
Linear
-
B.
Branched
-
C.
Cross-linked
-
D.
Network
Solution
Most natural polymers, like cellulose, have a linear structure.
Correct Answer: A — Linear
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Q. What type of sugar is ribose?
-
A.
Monosaccharide
-
B.
Disaccharide
-
C.
Polysaccharide
-
D.
Oligosaccharide
Solution
Ribose is a monosaccharide, a simple sugar that is a component of RNA.
Correct Answer: A — Monosaccharide
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Q. What type of symmetry do most animals in the phylum Cnidaria exhibit? (2023)
-
A.
Bilateral symmetry
-
B.
Radial symmetry
-
C.
Asymmetry
-
D.
Spherical symmetry
Solution
Most cnidarians exhibit radial symmetry, allowing them to interact with their environment from all directions.
Correct Answer: B — Radial symmetry
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Q. What type of symmetry do most animals in the phylum Porifera exhibit? (2019)
-
A.
Bilateral symmetry
-
B.
Radial symmetry
-
C.
Asymmetry
-
D.
Spherical symmetry
Solution
Most animals in the phylum Porifera, such as sponges, exhibit asymmetry.
Correct Answer: C — Asymmetry
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Q. What type of symmetry is exhibited by organisms in the phylum Cnidaria? (2019)
-
A.
Bilateral symmetry
-
B.
Radial symmetry
-
C.
Asymmetry
-
D.
Spherical symmetry
Solution
Organisms in the phylum Cnidaria, such as jellyfish and corals, exhibit radial symmetry.
Correct Answer: B — Radial symmetry
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Q. What type of symmetry is exhibited by organisms in the phylum Platyhelminthes? (2022)
-
A.
Bilateral symmetry
-
B.
Radial symmetry
-
C.
Asymmetry
-
D.
Spherical symmetry
Solution
Platyhelminthes, or flatworms, exhibit bilateral symmetry, which is a key characteristic of this phylum.
Correct Answer: A — Bilateral symmetry
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Q. What type of symmetry is exhibited by organisms in the phylum Porifera? (2021)
-
A.
Bilateral symmetry
-
B.
Radial symmetry
-
C.
Asymmetry
-
D.
Spherical symmetry
Solution
Organisms in the phylum Porifera, such as sponges, exhibit asymmetry.
Correct Answer: C — Asymmetry
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Q. What type of tissue is responsible for the transport of water in plants? (2019)
-
A.
Phloem
-
B.
Xylem
-
C.
Parenchyma
-
D.
Collenchyma
Solution
Xylem is the type of tissue responsible for the transport of water and minerals from the roots to the rest of the plant.
Correct Answer: B — Xylem
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Q. What type of wave is characterized by particle motion being parallel to wave motion? (2023)
-
A.
Transverse wave
-
B.
Longitudinal wave
-
C.
Surface wave
-
D.
Standing wave
Solution
In a longitudinal wave, the particle motion is parallel to the direction of wave propagation.
Correct Answer: B — Longitudinal wave
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Q. What type of wave is produced when a vibrating tuning fork is placed on a table? (2022)
-
A.
Transverse wave
-
B.
Longitudinal wave
-
C.
Surface wave
-
D.
Electromagnetic wave
Solution
A vibrating tuning fork produces longitudinal waves in the air, which then can create transverse waves in the surface of the table.
Correct Answer: B — Longitudinal wave
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Q. Which alcohol is commonly known as rubbing alcohol?
-
A.
Ethanol
-
B.
Isopropanol
-
C.
Methanol
-
D.
Butanol
Solution
Isopropanol, or 2-Propanol, is commonly referred to as rubbing alcohol.
Correct Answer: B — Isopropanol
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Q. Which alcohol is used as an antifreeze agent? (2022)
-
A.
Ethanol
-
B.
Methanol
-
C.
Isopropanol
-
D.
Butanol
Solution
Methanol is commonly used as an antifreeze agent due to its low freezing point.
Correct Answer: B — Methanol
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Q. Which alcohol is used as an antifreeze? (2022)
-
A.
Methanol
-
B.
Ethanol
-
C.
Isopropanol
-
D.
Butanol
Solution
Methanol is commonly used as an antifreeze due to its low freezing point.
Correct Answer: A — Methanol
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Q. Which alkali metal is known for its vigorous reaction with water? (2022)
-
A.
Lithium
-
B.
Sodium
-
C.
Potassium
-
D.
Rubidium
Solution
Potassium (K) reacts vigorously with water, producing potassium hydroxide and hydrogen gas.
Correct Answer: C — Potassium
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Q. Which alkaline earth metal has the highest melting point? (2022)
-
A.
Beryllium
-
B.
Magnesium
-
C.
Calcium
-
D.
Barium
Solution
Beryllium has the highest melting point among the alkaline earth metals.
Correct Answer: A — Beryllium
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Q. Which alkaline earth metal is known for its use in the production of lightweight alloys? (2023)
-
A.
Calcium
-
B.
Barium
-
C.
Magnesium
-
D.
Strontium
Solution
Magnesium is widely used in the production of lightweight alloys due to its low density.
Correct Answer: C — Magnesium
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Q. Which alkaline earth metal is used in fireworks for its bright flame? (2021)
-
A.
Barium
-
B.
Calcium
-
C.
Strontium
-
D.
Magnesium
Solution
Strontium (Sr) is used in fireworks to produce a bright red flame.
Correct Answer: C — Strontium
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Q. Which alkaline earth metal is used in fireworks for producing a bright white light? (2023)
-
A.
Barium
-
B.
Calcium
-
C.
Strontium
-
D.
Magnesium
Solution
Strontium is used in fireworks to produce a bright red flame.
Correct Answer: C — Strontium
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Q. Which amine is a strong base due to steric hindrance? (2022)
-
A.
Methylamine
-
B.
Ethylamine
-
C.
Tert-butylamine
-
D.
Aniline
Solution
Tert-butylamine is a strong base due to steric hindrance that prevents protonation, making it more stable.
Correct Answer: C — Tert-butylamine
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Q. Which amine is known for its fishy odor?
-
A.
Methylamine
-
B.
Ethylamine
-
C.
Trimethylamine
-
D.
Aniline
Solution
Trimethylamine is known for its strong fishy odor, often associated with decaying fish.
Correct Answer: C — Trimethylamine
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Q. Which amine is used in the preparation of dyes?
-
A.
Aniline
-
B.
Methylamine
-
C.
Dimethylamine
-
D.
Ethylamine
Solution
Aniline is widely used in the preparation of dyes due to its reactivity.
Correct Answer: A — Aniline
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Q. Which biomolecule is involved in catalyzing biochemical reactions? (2022)
-
A.
Carbohydrates
-
B.
Proteins
-
C.
Nucleic acids
-
D.
Lipids
Solution
Proteins, specifically enzymes, catalyze biochemical reactions.
Correct Answer: B — Proteins
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Q. Which biomolecule is involved in the formation of cell membranes? (2020)
-
A.
Proteins
-
B.
Carbohydrates
-
C.
Lipids
-
D.
Nucleic acids
Solution
Lipids, particularly phospholipids, are essential for cell membrane structure.
Correct Answer: C — Lipids
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Q. Which biomolecule is known for its role in catalyzing biochemical reactions?
-
A.
Nucleic Acids
-
B.
Carbohydrates
-
C.
Proteins
-
D.
Lipids
Solution
Proteins, specifically enzymes, are known for their role in catalyzing biochemical reactions.
Correct Answer: C — Proteins
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Q. Which biomolecule is made up of fatty acids and glycerol? (2022)
-
A.
Proteins
-
B.
Carbohydrates
-
C.
Lipids
-
D.
Nucleic acids
Solution
Lipids are composed of fatty acids and glycerol, forming structures like triglycerides.
Correct Answer: C — Lipids
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Q. Which biomolecule is made up of nucleotides? (2019)
-
A.
Proteins
-
B.
Carbohydrates
-
C.
Lipids
-
D.
Nucleic acids
Solution
Nucleic acids, such as DNA and RNA, are made of nucleotides.
Correct Answer: D — Nucleic acids
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