Carbohydrate

Q. Glucose and Galactose are having identical configuration in all the positions except position of carbon number ${}^{\prime }{x}^{\prime }$. Find $x$ .

Q.

Assertion: Arachidic acid is an unsaturated fatty acid.
Reason: There are one or more double bonds between carbon atoms in unsaturated fatty acids.

1. Both assertion and reason are true and the reason is the correct explanation for assertion.
2. Both assertion and reason are true but the reason is not the correct explanation for the assertion.
3. Assertion is true but the reason is false.
4. Both Assertion and Reason are false.

Q.

Pyran is

1. Heterocyclic, Aromatic

2. Heterocyclic, non aromatic

3. Homocyclic, Aromatic

4. Homocyclic, non aromatic

Q. Carbohydrates, the most abundant biomolecules on earth, are produced by

1. fungi, algae and green plant cells
2. some bacteria, algae and green plant cells
3. all bacteria, fungi and algae
4. viruses, fungi and bacteria

Q.

Molisch's test is done for the detection of?

1. Alkyl halide
2. Carbohydrate
3. Alkaloid
4. Fat

Q. Hydrolysis reaction of fats, with caustic soda, is known as

1. Esterification
2. Saponification
3. Acetylation
4. Carboxylation

Q.

On hydrolysis with dil H₂SO₄, starch and cellulose give 'X' and 'Y'. Then 'X' and 'Y' are a pair of

1. Enantiomers
2. Anomers
3. Functional isomers
4. Homologues

Q. The following carbohydrate is

(IIT-JEE, 2011)

1. a ketohexose
2. an aldohexose
3. an $\alpha$ - furanose
4. an $\alpha$ - pyranose

Q.

Lactose on hydrolysis gives:

1. Fructose + glucose

2. Glucose

3. Fructose

4. Glucose + galactose

Q. Number of carbon and water molecules present in carbohydrate should be same.

1. True
2. False