Carbohydrate

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

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

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

1. True
2. False

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.

If two isomers have been classified correctly as anomers, they may also be called

1. Conformers

2. Enantiomers

3. Tautomers

4. Diasteromers

Q. Which is not true for reducing and non reducing sugars?

1. Both depends on the position of linkage between two monosaccharides unit
2. Sucrose is a non reducing sugar, as linkage involves the carbonyl functional group of both monosaccharides units
3. Maltose and Lactose are reducing sugar, as one of the carbonyl functional group in any one of the monosaccharides unit is free
4. Maltose is reducing sugar while lactose and sucrose both are non reducing sugar

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. 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. Glucose + galactose

2. Glucose

3. Fructose

4. Fructose + glucose