Q. What type of bond is primarily responsible for the structure of polymers?
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A.
Ionic bond
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B.
Covalent bond
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C.
Hydrogen bond
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D.
Metallic bond
Solution
Covalent bonds are primarily responsible for the structure of polymers, linking monomers together.
Correct Answer: B — Covalent bond
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Q. What type of bond links amino acids together in a protein? (2023) 2023
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A.
Ionic bond
-
B.
Covalent bond
-
C.
Hydrogen bond
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D.
Peptide bond
Solution
A peptide bond is a specific type of covalent bond that links amino acids together in proteins.
Correct Answer: D — Peptide bond
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Q. What type of intermolecular force is present in liquid water? (2021)
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A.
London dispersion forces
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B.
Dipole-dipole interactions
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C.
Hydrogen bonding
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D.
Ionic interactions
Solution
Liquid water exhibits hydrogen bonding due to the attraction between the hydrogen atoms of one water molecule and the oxygen atom of another.
Correct Answer: C — Hydrogen bonding
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Q. What type of mechanism is involved in the reaction of tertiary haloalkanes with nucleophiles? (2020)
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A.
SN1
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B.
SN2
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C.
E1
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D.
E2
Solution
Tertiary haloalkanes typically undergo the SN1 mechanism, which involves the formation of a carbocation intermediate.
Correct Answer: A — SN1
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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 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
-
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 an alkene reacts with hydrogen? (2023) 2023
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A.
Hydrolysis
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B.
Hydrogenation
-
C.
Dehydration
-
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)
-
A.
Hydrogenation
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B.
Dehydrogenation
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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
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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
-
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
-
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 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
-
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
-
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. 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
-
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
-
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 amine is a strong base due to steric hindrance? (2022)
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A.
Methylamine
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B.
Ethylamine
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C.
Tert-butylamine
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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?
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A.
Methylamine
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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?
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A.
Aniline
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B.
Methylamine
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C.
Dimethylamine
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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 known for its role in catalyzing biochemical reactions?
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A.
Nucleic Acids
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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 primarily involved in the structure of cell membranes?
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A.
Proteins
-
B.
Carbohydrates
-
C.
Nucleic Acids
-
D.
Phospholipids
Solution
Phospholipids are the main components of cell membranes, forming a bilayer.
Correct Answer: D — Phospholipids
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Q. Which biomolecule is primarily responsible for genetic information? (2023)
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A.
Carbohydrates
-
B.
Proteins
-
C.
Lipids
-
D.
Nucleic acids
Solution
Nucleic acids, such as DNA and RNA, store and transmit genetic information.
Correct Answer: D — Nucleic acids
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Q. Which biomolecule is primarily responsible for storing genetic information? (2023) 2023
-
A.
Proteins
-
B.
Carbohydrates
-
C.
Lipids
-
D.
Nucleic acids
Solution
Nucleic acids, such as DNA and RNA, are responsible for storing and transmitting genetic information.
Correct Answer: D — Nucleic acids
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Q. Which biomolecule is primarily used for energy storage in animals?
-
A.
Glycogen
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B.
Cellulose
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C.
Chitin
-
D.
Starch
Solution
Glycogen is the primary energy storage molecule in animals.
Correct Answer: A — Glycogen
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Q. Which biomolecule is responsible for storing genetic information? (2023)
-
A.
Proteins
-
B.
Lipids
-
C.
Carbohydrates
-
D.
Nucleic acids
Solution
Nucleic acids, such as DNA and RNA, are responsible for storing and transmitting genetic information.
Correct Answer: D — Nucleic acids
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Q. Which biomolecule is responsible for storing genetic information? (2023) 2023
-
A.
Proteins
-
B.
Lipids
-
C.
Carbohydrates
-
D.
Nucleic acids
Solution
Nucleic acids, such as DNA and RNA, are responsible for storing and transmitting genetic information.
Correct Answer: D — Nucleic acids
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Q. Which carboxylic acid has the highest boiling point?
-
A.
Formic acid
-
B.
Acetic acid
-
C.
Propanoic acid
-
D.
Butanoic acid
Solution
Butanoic acid has the highest boiling point due to its longer carbon chain.
Correct Answer: D — Butanoic acid
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Q. Which carboxylic acid is commonly known as 'butyric acid'?
-
A.
C3H6O2
-
B.
C4H8O2
-
C.
C5H10O2
-
D.
C2H4O2
Solution
Butyric acid has the molecular formula C4H8O2.
Correct Answer: B — C4H8O2
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