Q. Which of the following is a method for synthesizing alcohols?
A.
Hydration of alkenes
B.
Reduction of aldehydes
C.
Reduction of ketones
D.
All of the above
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Solution
All the listed methods (hydration of alkenes, reduction of aldehydes, and reduction of ketones) can be used to synthesize alcohols.
Correct Answer: D — All of the above
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Q. Which of the following is a method for synthesizing aldehydes?
A.
Hydration of alkynes
B.
Hydrolysis of esters
C.
Reduction of carboxylic acids
D.
Oxidation of primary alcohols
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Solution
Aldehydes can be synthesized by the hydration of alkynes.
Correct Answer: A — Hydration of alkynes
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Q. Which of the following is a method for synthesizing amines?
A.
Reduction of nitriles
B.
Hydrolysis of amides
C.
Alkylation of ammonia
D.
All of the above
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Solution
All listed methods can be used to synthesize amines.
Correct Answer: D — All of the above
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Q. Which of the following is a method for synthesizing ethers?
A.
Dehydration of alcohols
B.
Hydrogenation of alkenes
C.
Oxidation of alcohols
D.
Reduction of ketones
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Solution
Ethers can be synthesized by the dehydration of two alcohol molecules.
Correct Answer: A — Dehydration of alcohols
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Q. Which of the following is a method for the preparation of alkenes?
A.
Hydrogenation
B.
Dehydrohalogenation
C.
Hydrolysis
D.
Oxidation
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Solution
Dehydrohalogenation is a common method for preparing alkenes from alkyl halides.
Correct Answer: B — Dehydrohalogenation
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Q. Which of the following is a method for the preparation of amines?
A.
Reduction of nitriles
B.
Hydrolysis of amides
C.
Alkylation of ammonia
D.
All of the above
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Solution
All of the listed methods can be used to prepare amines.
Correct Answer: D — All of the above
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Q. Which of the following is a method for the preparation of ethers?
A.
Dehydration of alcohols
B.
Hydrolysis of alkyl halides
C.
Oxidation of alcohols
D.
Reduction of ketones
Show solution
Solution
Ethers can be prepared by the dehydration of two alcohol molecules.
Correct Answer: A — Dehydration of alcohols
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Q. Which of the following is a method for the preparation of haloalkanes?
A.
Hydrohalogenation of alkenes
B.
Halogenation of alkanes
C.
Nucleophilic substitution
D.
All of the above
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Solution
All of the listed methods can be used to prepare haloalkanes.
Correct Answer: D — All of the above
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Q. Which of the following is a method for the synthesis of ketones?
A.
Oxidation of primary alcohols
B.
Hydration of alkynes
C.
Reduction of carboxylic acids
D.
Dehydration of alcohols
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Solution
The hydration of alkynes leads to the formation of ketones, especially when using a catalyst.
Correct Answer: B — Hydration of alkynes
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Q. Which of the following is a method to distinguish between aldehydes and ketones?
A.
Benedict's test
B.
Tollens' test
C.
Iodoform test
D.
Fehling's test
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Solution
Tollens' test can be used to distinguish between aldehydes and ketones, as aldehydes reduce Tollens' reagent.
Correct Answer: B — Tollens' test
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Q. Which of the following is a method to prepare aldehydes?
A.
Hydration of alkynes
B.
Hydrolysis of nitriles
C.
Oxidation of primary alcohols
D.
All of the above
Show solution
Solution
All of the listed methods can be used to prepare aldehydes.
Correct Answer: D — All of the above
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Q. Which of the following is a method to prepare haloalkanes?
A.
Hydrogenation of alkenes
B.
Halogenation of alkanes
C.
Dehydrohalogenation
D.
Hydrolysis of alcohols
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Solution
Haloalkanes can be prepared by the halogenation of alkanes, which involves the substitution of hydrogen by halogen.
Correct Answer: B — Halogenation of alkanes
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Q. Which of the following is a monosaccharide?
A.
Sucrose
B.
Lactose
C.
Glucose
D.
Starch
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Solution
Glucose is a monosaccharide, while sucrose and lactose are disaccharides, and starch is a polysaccharide.
Correct Answer: C — Glucose
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Q. Which of the following is a natural polymer?
A.
Nylon
B.
Cellulose
C.
Polystyrene
D.
Polyethylene
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Solution
Cellulose is a natural polymer found in the cell walls of plants.
Correct Answer: B — Cellulose
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Q. Which of the following is a natural source of caffeine?
A.
Tea leaves
B.
Sugar cane
C.
Corn
D.
Rice
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Solution
Tea leaves are a natural source of caffeine, commonly consumed in beverages.
Correct Answer: A — Tea leaves
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Q. Which of the following is a natural sweetener derived from plants?
A.
Aspartame
B.
Stevia
C.
Saccharin
D.
Sucralose
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Solution
Stevia is a natural sweetener extracted from the leaves of the Stevia rebaudiana plant.
Correct Answer: B — Stevia
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Q. Which of the following is a natural sweetener?
A.
Aspartame
B.
Sucralose
C.
Stevia
D.
Saccharin
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Solution
Stevia is a natural sweetener derived from the leaves of the Stevia plant.
Correct Answer: C — Stevia
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Q. Which of the following is a polysaccharide?
A.
Glucose
B.
Fructose
C.
Cellulose
D.
Galactose
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Solution
Cellulose is a polysaccharide made up of long chains of glucose units.
Correct Answer: C — Cellulose
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Q. Which of the following is a primary alcohol derived from an alkane?
A.
Methanol
B.
Ethanol
C.
Propan-1-ol
D.
Butanol
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Solution
Propan-1-ol is a primary alcohol derived from propane.
Correct Answer: C — Propan-1-ol
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Q. Which of the following is a primary alcohol?
A.
1-butanol
B.
2-butanol
C.
tert-butanol
D.
cyclohexanol
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Solution
1-butanol has the hydroxyl group attached to a primary carbon atom.
Correct Answer: A — 1-butanol
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Q. Which of the following is a primary amine?
A.
CH3NH2
B.
(CH3)2NH
C.
(C2H5)3N
D.
C6H5NH2
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Solution
CH3NH2 is a primary amine as it has one alkyl group attached to the nitrogen atom.
Correct Answer: A — CH3NH2
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Q. Which of the following is a primary haloalkane?
A.
1-bromobutane
B.
2-bromobutane
C.
3-bromobutane
D.
Bromobenzene
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Solution
1-bromobutane is a primary haloalkane as the carbon attached to the halogen is bonded to only one other carbon.
Correct Answer: A — 1-bromobutane
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Q. Which of the following is a primary structure of proteins?
A.
Sequence of amino acids
B.
Alpha-helix structure
C.
Beta-pleated sheet
D.
Quaternary structure
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Solution
The primary structure of proteins refers to the linear sequence of amino acids linked by peptide bonds.
Correct Answer: A — Sequence of amino acids
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Q. Which of the following is a property of alkanes?
A.
They are polar
B.
They are soluble in water
C.
They are non-polar
D.
They have high reactivity
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Solution
Alkanes are non-polar molecules and are generally insoluble in water.
Correct Answer: C — They are non-polar
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Q. Which of the following is a property of alkenes?
A.
Saturated
B.
Unsaturated
C.
Non-polar
D.
Inert
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Solution
Alkenes are unsaturated hydrocarbons due to the presence of at least one double bond.
Correct Answer: B — Unsaturated
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Q. Which of the following is a property of alkynes?
A.
They are saturated
B.
They contain a triple bond
C.
They are less reactive than alkenes
D.
They have the formula CnH2n
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Solution
Alkynes contain at least one triple bond between carbon atoms.
Correct Answer: B — They contain a triple bond
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Q. Which of the following is a property of aromatic compounds?
A.
High reactivity
B.
Planar structure
C.
Non-polar nature
D.
All of the above
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Solution
Aromatic compounds are characterized by a planar structure and exhibit unique stability due to resonance, but they are generally less reactive than alkenes.
Correct Answer: B — Planar structure
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Q. Which of the following is a property of aromatic hydrocarbons?
A.
They are always saturated
B.
They have a pleasant smell
C.
They contain a benzene ring
D.
They are non-polar
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Solution
Aromatic hydrocarbons contain a benzene ring.
Correct Answer: C — They contain a benzene ring
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Q. Which of the following is a property of carboxylic acids?
A.
They are basic
B.
They have high boiling points
C.
They are insoluble in water
D.
They do not form hydrogen bonds
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Solution
Carboxylic acids have high boiling points due to hydrogen bonding.
Correct Answer: B — They have high boiling points
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Q. Which of the following is a property of cycloalkanes?
A.
They are always aromatic
B.
They have a ring structure
C.
They are unsaturated
D.
They contain only single bonds
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Solution
Cycloalkanes have a ring structure and can be saturated or unsaturated depending on the number of hydrogen atoms.
Correct Answer: B — They have a ring structure
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