Undergraduate
Q. What type of plant is characterized by having a thallus? (2021)
-
A.
Moss
-
B.
Liverwort
-
C.
Fern
-
D.
Flowering plant
Solution
Liverworts are characterized by having a thallus, which is a flat, leaf-like structure.
Correct Answer: B — Liverwort
Learn More →
Q. What type of plant is characterized by having seeds that are enclosed within a fruit? (2021)
-
A.
Gymnosperms
-
B.
Angiosperms
-
C.
Pteridophytes
-
D.
Bryophytes
Solution
Angiosperms are characterized by having seeds enclosed within a fruit, which is a key feature of this group.
Correct Answer: B — Angiosperms
Learn More →
Q. What type of plant tissue is responsible for the growth in length of stems and roots? (2021)
-
A.
Permanent tissue
-
B.
Meristematic tissue
-
C.
Vascular tissue
-
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
Learn More →
Q. What type of plant tissue is responsible for the growth in length of the plant? (2021)
-
A.
Lateral meristem
-
B.
Apical meristem
-
C.
Permanent tissue
-
D.
Vascular tissue
Solution
Apical meristem is responsible for the primary growth in length of the plant.
Correct Answer: B — Apical meristem
Learn More →
Q. What type of plant tissue is responsible for the growth in length? (2021)
-
A.
Lateral meristem
-
B.
Apical meristem
-
C.
Permanent tissue
-
D.
Vascular tissue
Solution
Apical meristem is responsible for the growth in length of the plant, found at the tips of roots and shoots.
Correct Answer: B — Apical meristem
Learn More →
Q. What type of polymer is formed by the polymerization of isoprene? (2019)
-
A.
Natural rubber
-
B.
Nylon
-
C.
Polyethylene
-
D.
Teflon
Solution
Natural rubber is formed by the polymerization of isoprene.
Correct Answer: A — Natural rubber
Learn More →
Q. What type of polymer is nylon?
-
A.
Addition polymer
-
B.
Condensation polymer
-
C.
Natural polymer
-
D.
Composite polymer
Solution
Nylon is a condensation polymer formed from the reaction of diamines and dicarboxylic acids.
Correct Answer: B — Condensation polymer
Learn More →
Q. What type of polymer is rubber classified as? (2019)
-
A.
Thermoplastic
-
B.
Thermosetting
-
C.
Elastomer
-
D.
Composite
Solution
Rubber is classified as an elastomer, which is a type of polymer that exhibits elastic properties.
Correct Answer: C — Elastomer
Learn More →
Q. What type of reaction forms a disaccharide from two monosaccharides? (2022)
-
A.
Hydrolysis
-
B.
Condensation
-
C.
Oxidation
-
D.
Reduction
Solution
A condensation reaction occurs when two monosaccharides combine to form a disaccharide, releasing water.
Correct Answer: B — Condensation
Learn More →
Q. What type of reaction is involved in the conversion of an alkene to an alkane? (2023)
-
A.
Hydrogenation
-
B.
Dehydration
-
C.
Halogenation
-
D.
Oxidation
Solution
Hydrogenation is the process of adding hydrogen to an alkene to convert it into an alkane.
Correct Answer: A — Hydrogenation
Learn More →
Q. What type of reaction occurs when 1-chlorobutane is treated with aqueous KOH? (2023)
-
A.
Elimination
-
B.
Substitution
-
C.
Addition
-
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
Learn More →
Q. What type of reaction occurs when 1-chloropropane reacts with aqueous KOH? (2023)
-
A.
Elimination
-
B.
Substitution
-
C.
Addition
-
D.
Redox
Solution
The reaction of 1-chloropropane with aqueous KOH leads to an elimination reaction, forming propene.
Correct Answer: B — Substitution
Learn More →
Q. What type of reaction occurs when 1-chloropropane reacts with potassium cyanide? (2019)
-
A.
Nucleophilic substitution
-
B.
Electrophilic substitution
-
C.
Addition reaction
-
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
Learn More →
Q. What type of reaction occurs when 2-bromopropane is treated with aqueous KOH? (2023)
-
A.
Elimination
-
B.
Substitution
-
C.
Addition
-
D.
Redox
Solution
The reaction of 2-bromopropane with aqueous KOH leads to an elimination reaction, forming propene.
Correct Answer: A — Elimination
Learn More →
Q. What type of reaction occurs when an alcohol is oxidized? (2023)
-
A.
Reduction
-
B.
Dehydration
-
C.
Substitution
-
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
Learn More →
Q. What type of reaction occurs when an alkene reacts with hydrogen? (2023) 2023
-
A.
Hydrolysis
-
B.
Hydrogenation
-
C.
Dehydration
-
D.
Oxidation
Solution
The reaction of an alkene with hydrogen is called hydrogenation.
Correct Answer: B — Hydrogenation
Learn More →
Q. What type of reaction occurs when chlorobenzene is treated with magnesium in dry ether? (2019)
-
A.
Grignard reaction
-
B.
Nucleophilic substitution
-
C.
Electrophilic substitution
-
D.
Reduction reaction
Solution
The reaction of chlorobenzene with magnesium in dry ether forms a Grignard reagent, which is a key step in organic synthesis.
Correct Answer: A — Grignard reaction
Learn More →
Q. What type of reaction occurs when ethene is converted to ethane? (2020)
-
A.
Hydrogenation
-
B.
Dehydrogenation
-
C.
Halogenation
-
D.
Hydrolysis
Solution
The conversion of ethene to ethane involves the addition of hydrogen, which is known as hydrogenation.
Correct Answer: A — Hydrogenation
Learn More →
Q. What type of reaction occurs when ethene reacts with bromine?
-
A.
Substitution
-
B.
Addition
-
C.
Elimination
-
D.
Oxidation
Solution
The reaction between ethene and bromine is an addition reaction, forming dibromoethane.
Correct Answer: B — Addition
Learn More →
Q. What type of reaction occurs when haloalkanes react with aqueous KOH?
-
A.
Nucleophilic substitution
-
B.
Elimination
-
C.
Addition
-
D.
Redox
Solution
Haloalkanes react with aqueous KOH primarily through nucleophilic substitution to form alcohols.
Correct Answer: A — Nucleophilic substitution
Learn More →
Q. What type of reaction occurs when haloalkanes react with metals like magnesium?
-
A.
Substitution
-
B.
Elimination
-
C.
Addition
-
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
Learn More →
Q. What type of reaction occurs when haloalkanes react with metals like zinc?
-
A.
Substitution
-
B.
Elimination
-
C.
Reduction
-
D.
Oxidation
Solution
The reaction of haloalkanes with metals like zinc is a reduction reaction, forming alkanes.
Correct Answer: C — Reduction
Learn More →
Q. What type of reaction occurs when haloalkanes react with nucleophiles? (2020)
-
A.
Elimination
-
B.
Substitution
-
C.
Addition
-
D.
Redox
Solution
Haloalkanes typically undergo nucleophilic substitution reactions where the halogen is replaced by a nucleophile.
Correct Answer: B — Substitution
Learn More →
Q. What type of reaction occurs when phenol reacts with bromine? (2023)
-
A.
Electrophilic substitution
-
B.
Nucleophilic substitution
-
C.
Addition
-
D.
Elimination
Solution
Phenol undergoes electrophilic substitution when it reacts with bromine, resulting in brominated phenols.
Correct Answer: A — Electrophilic substitution
Learn More →
Q. What type of reproduction is primarily observed in flowering plants? (2022)
-
A.
Asexual reproduction
-
B.
Vegetative propagation
-
C.
Sexual reproduction
-
D.
Budding
Solution
Flowering plants primarily reproduce sexually through the formation of flowers and seeds.
Correct Answer: C — Sexual reproduction
Learn More →
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
Learn More →
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
Learn More →
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
Learn More →
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
Learn More →
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
Learn More →
Showing 2761 to 2790 of 3756 (126 Pages)