Q. Which reagent is used to convert alcohols to alkyl halides?
-
A.
SOCl2
-
B.
NaOH
-
C.
H2SO4
-
D.
KMnO4
Solution
Thionyl chloride (SOCl2) is commonly used to convert alcohols to alkyl halides.
Correct Answer: A — SOCl2
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Q. Which reagent is used to convert an alcohol to an alkene?
-
A.
H2SO4
-
B.
NaOH
-
C.
KMnO4
-
D.
HCl
Solution
Concentrated sulfuric acid (H2SO4) is commonly used for dehydration of alcohols to form alkenes.
Correct Answer: A — H2SO4
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Q. Which reagent is used to convert an alcohol to an alkyl halide?
-
A.
SOCl2
-
B.
H2SO4
-
C.
NaBr
-
D.
KMnO4
Solution
Thionyl chloride (SOCl2) is commonly used to convert alcohols to alkyl halides.
Correct Answer: A — SOCl2
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Q. Which reagent is used to convert an aldehyde to a primary alcohol?
-
A.
LiAlH4
-
B.
NaBH4
-
C.
H2/Pd
-
D.
All of the above
Solution
All of the above reagents can reduce an aldehyde to a primary alcohol.
Correct Answer: D — All of the above
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Q. Which reagent is used to convert an alkene to an alcohol?
-
A.
H2O
-
B.
H2
-
C.
HCl
-
D.
NaOH
Solution
Water (H2O) in the presence of an acid catalyst can convert an alkene to an alcohol through hydration.
Correct Answer: A — H2O
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Q. Which reagent is used to convert an alkyne to a cis-alkene?
-
A.
H2/Pd
-
B.
H2/Lindlar's catalyst
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C.
Li/NH3
-
D.
Na/NH3
Solution
H2 in the presence of Lindlar's catalyst is used to convert an alkyne to a cis-alkene.
Correct Answer: B — H2/Lindlar's catalyst
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Q. Which reagent is used to convert haloalkanes to alcohols?
-
A.
Sodium hydroxide
-
B.
Sodium bicarbonate
-
C.
Sodium chloride
-
D.
Sodium acetate
Solution
Sodium hydroxide is commonly used to convert haloalkanes to alcohols through nucleophilic substitution.
Correct Answer: A — Sodium hydroxide
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Q. Which reagent is used to convert phenol to phenyl ether?
-
A.
Sodium hydroxide
-
B.
Sodium phenoxide
-
C.
Bromine
-
D.
Hydrochloric acid
Solution
Sodium phenoxide reacts with alkyl halides to form phenyl ethers in a nucleophilic substitution reaction.
Correct Answer: B — Sodium phenoxide
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Q. Which reagent is used to distinguish between aldehydes and ketones?
-
A.
Benedict's solution
-
B.
Tollens' reagent
-
C.
Fehling's solution
-
D.
All of the above
Solution
All of the mentioned reagents can be used to distinguish between aldehydes and ketones, as aldehydes reduce these reagents while ketones do not.
Correct Answer: D — All of the above
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Q. Which reagent is used to test for the presence of alkenes?
-
A.
Bromine water
-
B.
Potassium permanganate
-
C.
Both A and B
-
D.
None of the above
Solution
Both bromine water and potassium permanganate can be used to test for alkenes, as they react with the double bond.
Correct Answer: C — Both A and B
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Q. Which substituent has both +M and -I effects?
-
A.
-OH
-
B.
-NH2
-
C.
-COOH
-
D.
-NO2
Solution
-NH2 has a +M effect due to resonance donation and a -I effect due to electronegativity.
Correct Answer: B — -NH2
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Q. Which substituent is a strong +I and +M director?
-
A.
-NO2
-
B.
-OH
-
C.
-CN
-
D.
-COOH
Solution
-OH is a strong +I and +M director due to its ability to donate electron density through resonance.
Correct Answer: B — -OH
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Q. Which substituent is a strong +M director?
-
A.
-CHO
-
B.
-NO2
-
C.
-OH
-
D.
-Br
Solution
The -OH group is a strong +M director due to its ability to donate electron density through resonance.
Correct Answer: C — -OH
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Q. Which type of isomerism is exhibited by 1,2-dichloroethene?
-
A.
Structural isomerism
-
B.
Geometric isomerism
-
C.
Optical isomerism
-
D.
Conformational isomerism
Solution
1,2-dichloroethene can exist in cis and trans forms, demonstrating geometric isomerism.
Correct Answer: B — Geometric isomerism
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Q. Which type of isomerism is exhibited by 1,3-butadiene?
-
A.
Geometric isomerism
-
B.
Structural isomerism
-
C.
Conformational isomerism
-
D.
Optical isomerism
Solution
1,3-butadiene can exhibit geometric isomerism due to the presence of double bonds.
Correct Answer: A — Geometric isomerism
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Q. Which type of isomerism is exhibited by glucose and fructose?
-
A.
Geometric isomerism
-
B.
Structural isomerism
-
C.
Optical isomerism
-
D.
Conformational isomerism
Solution
Glucose and fructose are structural isomers as they have the same molecular formula but different structures.
Correct Answer: B — Structural isomerism
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Q. Which type of isomerism is shown by butane (C4H10)?
-
A.
Geometric isomerism
-
B.
Structural isomerism
-
C.
Optical isomerism
-
D.
Tautomeric isomerism
Solution
Butane exhibits structural isomerism as it can exist as n-butane and isobutane.
Correct Answer: B — Structural isomerism
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Q. Which vitamin can be synthesized by the body when exposed to sunlight?
-
A.
Vitamin A
-
B.
Vitamin B12
-
C.
Vitamin C
-
D.
Vitamin D
Solution
Vitamin D can be synthesized by the body when the skin is exposed to sunlight.
Correct Answer: D — Vitamin D
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Q. Which vitamin deficiency can lead to night blindness?
-
A.
Vitamin A
-
B.
Vitamin B12
-
C.
Vitamin C
-
D.
Vitamin D
Solution
A deficiency in Vitamin A can lead to night blindness, as it is crucial for maintaining healthy vision.
Correct Answer: A — Vitamin A
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Q. Which vitamin deficiency can lead to scurvy?
-
A.
Vitamin A
-
B.
Vitamin C
-
C.
Vitamin K
-
D.
Vitamin B1
Solution
A deficiency in Vitamin C can lead to scurvy, characterized by symptoms such as bleeding gums and fatigue.
Correct Answer: B — Vitamin C
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Q. Which vitamin is a powerful antioxidant?
-
A.
Vitamin A
-
B.
Vitamin C
-
C.
Vitamin E
-
D.
Vitamin D
Solution
Vitamin E is known for its antioxidant properties, helping to protect cells from oxidative damage.
Correct Answer: C — Vitamin E
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Q. Which vitamin is also known as thiamine?
-
A.
Vitamin B1
-
B.
Vitamin B2
-
C.
Vitamin B3
-
D.
Vitamin B6
Solution
Vitamin B1 is also known as thiamine and is important for carbohydrate metabolism and nerve function.
Correct Answer: A — Vitamin B1
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Q. Which vitamin is commonly known as ascorbic acid?
-
A.
Vitamin A
-
B.
Vitamin B12
-
C.
Vitamin C
-
D.
Vitamin D
Solution
Ascorbic acid is the chemical name for Vitamin C, which is important for immune function.
Correct Answer: C — Vitamin C
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Q. Which vitamin is crucial for red blood cell formation?
-
A.
Vitamin B6
-
B.
Vitamin B12
-
C.
Vitamin C
-
D.
Vitamin D
Solution
Vitamin B12 is crucial for the formation of red blood cells and the maintenance of the nervous system.
Correct Answer: B — Vitamin B12
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Q. Which vitamin is essential for the synthesis of coenzyme A?
-
A.
Vitamin B1
-
B.
Vitamin B2
-
C.
Vitamin B5
-
D.
Vitamin B12
Solution
Vitamin B5, also known as pantothenic acid, is essential for the synthesis of coenzyme A, which is important in fatty acid metabolism.
Correct Answer: C — Vitamin B5
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Q. Which vitamin is essential for the synthesis of collagen?
-
A.
Vitamin A
-
B.
Vitamin B12
-
C.
Vitamin C
-
D.
Vitamin D
Solution
Vitamin C is crucial for the synthesis of collagen, a key structural protein in the body.
Correct Answer: C — Vitamin C
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Q. Which vitamin is essential for the synthesis of retinal?
-
A.
Vitamin A
-
B.
Vitamin B2
-
C.
Vitamin C
-
D.
Vitamin D
Solution
Vitamin A is essential for the synthesis of retinal, which is important for vision.
Correct Answer: A — Vitamin A
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Q. Which vitamin is important for blood clotting?
-
A.
Vitamin K
-
B.
Vitamin D
-
C.
Vitamin B6
-
D.
Vitamin C
Solution
Vitamin K is essential for the synthesis of proteins required for blood clotting.
Correct Answer: A — Vitamin K
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Q. Which vitamin is important for the metabolism of amino acids?
-
A.
Vitamin B1
-
B.
Vitamin B6
-
C.
Vitamin B12
-
D.
Vitamin C
Solution
Vitamin B6 is important for amino acid metabolism and the synthesis of neurotransmitters.
Correct Answer: B — Vitamin B6
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Q. Which vitamin is important for the metabolism of carbohydrates and amino acids?
-
A.
Vitamin B1
-
B.
Vitamin B2
-
C.
Vitamin B6
-
D.
All of the above
Solution
Vitamins B1, B2, and B6 all play important roles in the metabolism of carbohydrates and amino acids.
Correct Answer: D — All of the above
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