Undergraduate
Q. What type of plant tissue is responsible for the growth in length of stems and roots? (2021)
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A.
Permanent tissue
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B.
Meristematic tissue
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C.
Vascular tissue
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D.
Ground tissue
Solution
Meristematic tissue is responsible for the growth in length of stems and roots through cell division.
Correct Answer: B — Meristematic tissue
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Q. What type of plant tissue is responsible for the growth in length of the plant? (2021)
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A.
Lateral meristem
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B.
Apical meristem
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C.
Permanent tissue
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D.
Vascular tissue
Solution
Apical meristem is responsible for the primary growth in length of the plant.
Correct Answer: B — Apical meristem
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Q. What type of polymer is formed by the polymerization of isoprene? (2019)
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A.
Natural rubber
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B.
Nylon
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C.
Polyethylene
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D.
Teflon
Solution
Natural rubber is formed by the polymerization of isoprene.
Correct Answer: A — Natural rubber
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Q. What type of polymer is nylon?
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A.
Addition polymer
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B.
Condensation polymer
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C.
Natural polymer
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D.
Composite polymer
Solution
Nylon is a condensation polymer formed from the reaction of diamines and dicarboxylic acids.
Correct Answer: B — Condensation polymer
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Q. What type of polymer is rubber classified as? (2019)
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A.
Thermoplastic
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B.
Thermosetting
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C.
Elastomer
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D.
Composite
Solution
Rubber is classified as an elastomer, which is a type of polymer that exhibits elastic properties.
Correct Answer: C — Elastomer
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Q. What type of reaction forms a disaccharide from two monosaccharides? (2022)
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A.
Hydrolysis
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B.
Condensation
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C.
Oxidation
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D.
Reduction
Solution
A condensation reaction occurs when two monosaccharides combine to form a disaccharide, releasing water.
Correct Answer: B — Condensation
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Q. What type of reaction is involved in the conversion of an alkene to an alkane? (2023)
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A.
Hydrogenation
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B.
Dehydration
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C.
Halogenation
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D.
Oxidation
Solution
Hydrogenation is the process of adding hydrogen to an alkene to convert it into an alkane.
Correct Answer: A — Hydrogenation
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Q. What type of reaction occurs when 1-chlorobutane is treated with aqueous KOH? (2023)
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A.
Elimination
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B.
Substitution
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C.
Addition
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D.
Redox
Solution
When 1-chlorobutane is treated with aqueous KOH, a nucleophilic substitution reaction occurs, resulting in the formation of butanol.
Correct Answer: B — Substitution
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Q. What type of reaction occurs when 1-chloropropane reacts with potassium cyanide? (2019)
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A.
Nucleophilic substitution
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B.
Electrophilic substitution
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C.
Addition reaction
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D.
Elimination reaction
Solution
The reaction between 1-chloropropane and potassium cyanide is a nucleophilic substitution reaction, resulting in the formation of propanenitrile.
Correct Answer: A — Nucleophilic substitution
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Q. What type of reaction occurs when an alcohol is oxidized? (2023)
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A.
Reduction
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B.
Dehydration
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C.
Substitution
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D.
Oxidation
Solution
Oxidation of alcohols involves the loss of hydrogen or the gain of oxygen, leading to the formation of aldehydes, ketones, or carboxylic acids.
Correct Answer: D — Oxidation
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Q. What type of reaction occurs when an alkene reacts with hydrogen? (2023) 2023
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A.
Hydrolysis
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B.
Hydrogenation
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C.
Dehydration
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D.
Oxidation
Solution
The reaction of an alkene with hydrogen is called hydrogenation.
Correct Answer: B — Hydrogenation
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Q. What type of reaction occurs when ethene is converted to ethane? (2020)
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A.
Hydrogenation
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B.
Dehydrogenation
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C.
Halogenation
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D.
Hydrolysis
Solution
The conversion of ethene to ethane involves the addition of hydrogen, which is known as hydrogenation.
Correct Answer: A — Hydrogenation
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Q. What type of reaction occurs when ethene reacts with bromine?
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A.
Substitution
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B.
Addition
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C.
Elimination
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D.
Oxidation
Solution
The reaction between ethene and bromine is an addition reaction, forming dibromoethane.
Correct Answer: B — Addition
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Q. What type of reaction occurs when haloalkanes react with aqueous KOH?
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A.
Nucleophilic substitution
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B.
Elimination
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C.
Addition
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D.
Redox
Solution
Haloalkanes react with aqueous KOH primarily through nucleophilic substitution to form alcohols.
Correct Answer: A — Nucleophilic substitution
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Q. What type of reaction occurs when haloalkanes react with metals like magnesium?
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A.
Substitution
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B.
Elimination
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C.
Addition
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D.
Grignard formation
Solution
The reaction of haloalkanes with metals like magnesium leads to Grignard formation, which is a key step in organic synthesis.
Correct Answer: D — Grignard formation
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Q. What type of reaction occurs when haloalkanes react with metals like zinc?
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A.
Substitution
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B.
Elimination
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C.
Reduction
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D.
Oxidation
Solution
The reaction of haloalkanes with metals like zinc is a reduction reaction, forming alkanes.
Correct Answer: C — Reduction
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Q. What type of reaction occurs when haloalkanes react with nucleophiles? (2020)
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A.
Elimination
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B.
Substitution
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C.
Addition
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D.
Redox
Solution
Haloalkanes typically undergo nucleophilic substitution reactions where the halogen is replaced by a nucleophile.
Correct Answer: B — Substitution
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Q. What type of reaction occurs when phenol reacts with bromine? (2023)
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A.
Electrophilic substitution
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B.
Nucleophilic substitution
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C.
Addition
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D.
Elimination
Solution
Phenol undergoes electrophilic substitution when it reacts with bromine, resulting in brominated phenols.
Correct Answer: A — Electrophilic substitution
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Q. What type of reproduction is primarily observed in flowering plants? (2022)
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A.
Asexual reproduction
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B.
Vegetative propagation
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C.
Sexual reproduction
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D.
Budding
Solution
Flowering plants primarily reproduce sexually through the formation of flowers and seeds.
Correct Answer: C — Sexual reproduction
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Q. What type of reproduction occurs in sponges? (2020)
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A.
Asexual reproduction only
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B.
Sexual reproduction only
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C.
Both asexual and sexual reproduction
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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)
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A.
Tap root system
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B.
Fibrous root system
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C.
Adventitious root system
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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 structure do most natural polymers have?
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A.
Linear
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B.
Branched
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C.
Cross-linked
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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?
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A.
Monosaccharide
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B.
Disaccharide
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C.
Polysaccharide
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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)
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A.
Bilateral symmetry
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B.
Radial symmetry
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C.
Asymmetry
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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 is exhibited by organisms in the phylum Cnidaria? (2019)
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A.
Bilateral symmetry
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B.
Radial symmetry
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C.
Asymmetry
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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)
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A.
Bilateral symmetry
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B.
Radial symmetry
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C.
Asymmetry
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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 tissue is responsible for the transport of water in plants? (2019)
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A.
Phloem
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B.
Xylem
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C.
Parenchyma
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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)
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A.
Transverse wave
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B.
Longitudinal wave
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C.
Surface wave
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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. Which alcohol is commonly known as rubbing alcohol?
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A.
Ethanol
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B.
Isopropanol
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C.
Methanol
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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)
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A.
Ethanol
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B.
Methanol
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C.
Isopropanol
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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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