DNA does not have:
1. Adenine
2. Thymine
3. Cytosine
4. Uracil

Subtopic:   DNA, RNA & Metal Ions |
 96%
Level 1: 80%+
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Which one of the following reactions of glucose can be explained only by its cyclic structure?

1. Glucose forms pentaacetate.
2. Glucose reacts with hydroxylamine to form an oxime.
3. Pentaacetate of glucose does not react with hydroxylamine.
4. Glucose is oxidized by nitric acid to saccharic acid.

Subtopic:  Carbohydrates - Classification & D-L configuration |
 70%
Level 2: 60%+
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 D configuration is shown by:

           (i)                 (ii)             (iii)

1. i, ii and iii
2. ii and iii
3. i and ii
4. Only iii

Subtopic:  Carbohydrates - Classification & D-L configuration |
 72%
Level 2: 60%+
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Out of the three given structures, the correct statement regarding bonds present between C1  &  C4  and C1  &  C6  is

(i)
(ii) (iii)
 
C1 & C4 C1 & C6
1. (i)  (ii) and (iii)
2. (i) and (ii) (iii)
3. (i) and (iii) (ii)
4. (ii) and (iii) (i)
Subtopic:  Carbohydrates - Classification & D-L configuration | Polysaccharides & their Importance |
 71%
Level 2: 60%+
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Which of the following correctly describes sucrose?

a. Monosaccharide b. Disaccharide
c. Reducing sugar d. Non-reducing sugar

Choose the correct option:

1. a and b 2. b and c
3. c and d 4. b and d
Subtopic:  Polysaccharides & their Importance |
 89%
Level 1: 80%+
Hints

Examples of globular proteins are:

(a) Insulin (b) Keratin
(c) Albumin (d) Myosin


Choose the correct option : 
1. (a) and (b)
2. (b) and (c)
3. (c) and (d)
4. (a) and (c)

Subtopic:  α - Amino Acids, Peptide Bond, Proteins & Structure |
 72%
Level 2: 60%+
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Carbohydrates are useful for plants:

1. To build cell membrane.

2. To support structure.

3. To serve as a storage molecule.

4. To help in the transport mechanism.

Subtopic:  Carbohydrates - Classification & D-L configuration |
 74%
Level 2: 60%+
Hints

Consider the following compounds: 

Ribose, 2-deoxyribose, maltose, galactose, fructose and lactose

The number of disaccharide carbohydrates is/are:

1. 3 2. 1
3. 4 4. 2
Subtopic:  Carbohydrates - Classification & D-L configuration |
 64%
Level 2: 60%+
Hints

The main component present in starch and glycogen is:
1. Amylose
2. Glycose
3. Amylopectin
4. Cellulose

Subtopic:  Polysaccharides & their Importance |
 61%
Level 2: 60%+
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D-Glucose  \(\xrightarrow[]{\textbf{?}}\) Saccharic acid

The oxidizing reagent used for this conversion is:
1. HI
2. Bromine water
3. HNO3 
4. H2SO4

Subtopic:  Polysaccharides & their Importance |
 72%
Level 2: 60%+
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