Q. What is the primary monomer used to produce polystyrene?
-
A.
Ethylene
-
B.
Propylene
-
C.
Styrene
-
D.
Vinyl chloride
Solution
Styrene is the primary monomer used to produce polystyrene.
Correct Answer: C — Styrene
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Q. What is the primary product of the reaction between 1-chlorobutane and potassium cyanide?
-
A.
1-cyanobutane
-
B.
2-cyanobutane
-
C.
Butyronitrile
-
D.
Butyl cyanide
Solution
The reaction leads to the formation of 1-cyanobutane through nucleophilic substitution.
Correct Answer: A — 1-cyanobutane
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Q. What is the primary product of the reaction between a carboxylic acid and an alcohol in the presence of an acid catalyst?
-
A.
Aldehyde
-
B.
Ester
-
C.
Ketone
-
D.
Amide
Solution
The reaction between a carboxylic acid and an alcohol in the presence of an acid catalyst produces an ester.
Correct Answer: B — Ester
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Q. What is the primary product when 1-bromo-2-methylpropane reacts with KOH in ethanol?
-
A.
2-methylpropene
-
B.
1-methylpropene
-
C.
2-bromopropane
-
D.
no reaction
Solution
The reaction leads to the formation of 2-methylpropene through an elimination reaction.
Correct Answer: A — 2-methylpropene
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Q. What is the primary product when 1-chloropropane reacts with potassium tert-butoxide?
-
A.
Propene
-
B.
2-methylpropane
-
C.
1-butene
-
D.
No reaction
Solution
The reaction of 1-chloropropane with potassium tert-butoxide leads to the formation of propene via an elimination reaction.
Correct Answer: A — Propene
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Q. What is the primary product when a carboxylic acid is reduced with lithium aluminum hydride (LiAlH4)?
-
A.
Alcohol
-
B.
Aldehyde
-
C.
Ketone
-
D.
Ester
Solution
Lithium aluminum hydride reduces carboxylic acids to primary alcohols.
Correct Answer: A — Alcohol
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Q. What is the primary product when a carboxylic acid reacts with thionyl chloride (SOCl2)?
-
A.
Acid chloride
-
B.
Ester
-
C.
Alcohol
-
D.
Aldehyde
Solution
The primary product of the reaction between a carboxylic acid and thionyl chloride is an acid chloride.
Correct Answer: A — Acid chloride
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Q. What is the primary product when ammonia reacts with an alkyl halide?
-
A.
Amine
-
B.
Amide
-
C.
Alkane
-
D.
Alcohol
Solution
The primary product of the reaction between ammonia and an alkyl halide is an amine.
Correct Answer: A — Amine
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Q. What is the primary product when an alcohol is oxidized?
-
A.
Alkane
-
B.
Aldehyde
-
C.
Ketone
-
D.
Carboxylic acid
Solution
The primary product of the oxidation of a primary alcohol is an aldehyde.
Correct Answer: B — Aldehyde
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Q. What is the primary product when chlorobenzene is treated with sodium hydroxide at high temperature?
-
A.
Phenol
-
B.
Benzene
-
C.
Chlorobenzene
-
D.
Sodium chloride
Solution
Chlorobenzene reacts with sodium hydroxide at high temperature to form phenol.
Correct Answer: A — Phenol
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Q. What is the primary product when ethene reacts with water in the presence of an acid?
-
A.
Ethanol
-
B.
Ethane
-
C.
Ethanoic acid
-
D.
Ethylene glycol
Solution
The reaction of ethene with water in the presence of an acid (hydration) produces ethanol.
Correct Answer: A — Ethanol
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Q. What is the primary reason for the +M effect of -OCH3?
-
A.
Inductive effect
-
B.
Resonance effect
-
C.
Steric hindrance
-
D.
Electronegativity
Solution
The +M effect of -OCH3 is primarily due to resonance effect, where the lone pairs on oxygen can delocalize into the aromatic ring.
Correct Answer: B — Resonance effect
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Q. What is the primary reason for the acidity of chloroacetic acid compared to acetic acid?
-
A.
Inductive effect
-
B.
Mesomeric effect
-
C.
Steric hindrance
-
D.
Hydrogen bonding
Solution
The inductive effect of the -Cl group in chloroacetic acid increases its acidity compared to acetic acid.
Correct Answer: A — Inductive effect
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Q. What is the primary reason for the stability of benzene?
-
A.
Presence of double bonds
-
B.
Resonance stabilization
-
C.
High molecular weight
-
D.
Hydrogen bonding
Solution
Benzene's stability arises from resonance stabilization, where the electrons are delocalized over the entire ring structure.
Correct Answer: B — Resonance stabilization
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Q. What is the primary reason for the stability of phenol compared to cyclohexanol?
-
A.
Inductive effect
-
B.
Mesomeric effect
-
C.
Steric hindrance
-
D.
Hydrogen bonding
Solution
Phenol is stabilized by resonance (mesomeric effect) which is not present in cyclohexanol.
Correct Answer: B — Mesomeric effect
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Q. What is the primary storage form of carbohydrates in animals?
-
A.
Starch
-
B.
Glycogen
-
C.
Cellulose
-
D.
Chitin
Solution
Glycogen is the primary storage form of carbohydrates in animals.
Correct Answer: B — Glycogen
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Q. What is the primary structural component of plant cell walls?
-
A.
Starch
-
B.
Glycogen
-
C.
Cellulose
-
D.
Chitin
Solution
Cellulose is the primary structural component of plant cell walls, providing rigidity and strength.
Correct Answer: C — Cellulose
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Q. What is the primary structure of a polymer determined by?
-
A.
The arrangement of monomers
-
B.
The molecular weight
-
C.
The type of bonds
-
D.
The color of the polymer
Solution
The primary structure of a polymer is determined by the arrangement of its monomers.
Correct Answer: A — The arrangement of monomers
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Q. What is the primary structure of a protein determined by?
-
A.
Hydrogen bonds
-
B.
Ionic bonds
-
C.
Peptide bonds
-
D.
Disulfide bridges
Solution
The primary structure of a protein is determined by the sequence of amino acids linked by peptide bonds.
Correct Answer: C — Peptide bonds
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Q. What is the primary structure of a protein?
-
A.
The sequence of amino acids
-
B.
The folding of the polypeptide chain
-
C.
The arrangement of multiple polypeptide chains
-
D.
The interaction between side chains
Solution
The primary structure of a protein refers to the linear sequence of amino acids in the polypeptide chain.
Correct Answer: A — The sequence of amino acids
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Q. What is the primary type of bonding in polymers?
-
A.
Ionic bonding
-
B.
Covalent bonding
-
C.
Metallic bonding
-
D.
Hydrogen bonding
Solution
Covalent bonding is the primary type of bonding in polymers, linking monomers together.
Correct Answer: B — Covalent bonding
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Q. What is the primary type of reaction that alkanes undergo?
-
A.
Addition
-
B.
Substitution
-
C.
Elimination
-
D.
Condensation
Solution
Alkanes primarily undergo substitution reactions.
Correct Answer: B — Substitution
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Q. What is the primary use of amines in industry?
-
A.
Solvents
-
B.
Fertilizers
-
C.
Dyes
-
D.
All of the above
Solution
Amines are used in various industries for solvents, fertilizers, dyes, and more.
Correct Answer: D — All of the above
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Q. What is the primary use of antihistamines?
-
A.
To treat infections
-
B.
To relieve allergy symptoms
-
C.
To reduce fever
-
D.
To promote sleep
Solution
Antihistamines are primarily used to relieve symptoms of allergies.
Correct Answer: B — To relieve allergy symptoms
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Q. What is the primary use of baking soda in cooking?
-
A.
Flavor enhancer
-
B.
Leavening agent
-
C.
Preservative
-
D.
Coloring agent
Solution
Baking soda acts as a leavening agent, helping baked goods rise by producing carbon dioxide when reacting with acids.
Correct Answer: B — Leavening agent
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Q. What is the primary use of citric acid in food?
-
A.
Preservative
-
B.
Flavor enhancer
-
C.
Thickener
-
D.
Coloring agent
Solution
Citric acid is commonly used as a flavor enhancer in food products.
Correct Answer: B — Flavor enhancer
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Q. What is the primary use of ethanol in everyday life?
-
A.
Fuel
-
B.
Solvent
-
C.
Antiseptic
-
D.
All of the above
Solution
Ethanol is used as a fuel, solvent, and antiseptic in various applications.
Correct Answer: D — All of the above
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Q. What is the primary use of sodium bicarbonate in households?
-
A.
Cleaning agent
-
B.
Food preservative
-
C.
Antacid
-
D.
All of the above
Solution
Sodium bicarbonate is used for cleaning, as a food preservative, and as an antacid.
Correct Answer: D — All of the above
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Q. What is the primary use of Teflon?
-
A.
Insulation
-
B.
Non-stick coatings
-
C.
Adhesives
-
D.
Textiles
Solution
Teflon is primarily used for non-stick coatings in cookware due to its low friction properties.
Correct Answer: B — Non-stick coatings
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Q. What is the process called when a polymer is formed by the addition of monomers without the loss of any small molecules?
-
A.
Condensation polymerization
-
B.
Addition polymerization
-
C.
Cross-linking
-
D.
Chain termination
Solution
Addition polymerization is the process where monomers add together without the loss of small molecules.
Correct Answer: B — Addition polymerization
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