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1.

The pollen intine is made up of:
(1) Sporopollenin
(2) Cellulose and hemi-cellulose
(3) Cellulose and pectin
(4) Murein and techoic acid

2.

In humans, the dominance relationship between the A and B alleles of ABO blood group gene is an example of
(1) complete dominance.
(2) incomplete dominance.
(3) codominance.
(3) epistasis
 

3.

A population of an animal is hunted down to only 20 organisms. Later the number is restored to 10,000 organisms, but the variations in this population are highly reduced. This is called:
1. Founder Effect
2. Bottleneck effect
3. Edge effect
4. Heterosis

4.

Ringworm in humans can be caused by infection with all the following except:
1. Microsporum
2. Taenia
3. Trichophyton
4. Epidermophyton

5.

The plasmid pBR322 does not contain:
1. An origin of replication site
2. A gene that encodes for restrictor of plasmid copy number
3. Gene for Ampicillin and Streptomycin resistance
4. Sites for many restriction enzymes

6.

Equivalent weight of a metal oxide is 20, the equivalent weight of sulphate of same metal will be 
(1) 60
(2) 69
(3) 108
(4) 54

7.

The pH of a solution obtained by mixing 100ml of 0.2 M CH₃COOH with 100ml of 0.2 M NaOH would be (given pKa for CH₃COOH = 4.74)
1. 4.74
2. 8.87
3. 9.10
4. 8.57

8.

Given the half-cell reactions
      ${\mathrm{Cu}}^{+}\left(\mathrm{aq}\right) + {\mathrm{e}}^{-} \stackrel{ }{\to } \mathrm{Cu}\left(\mathrm{s}\right), \mathrm{E}°=+0.52 \mathrm{V}$
${\mathrm{Cu}}^{+2}\left(\mathrm{aq}\right) + 2{\mathrm{e}}^{-} \stackrel{ }{\to } \mathrm{Cu}\left(\mathrm{s}\right), \mathrm{E}°=+0.16 \mathrm{V}$        
The equilibrium constant for the disproportionation reaction
$2{\mathrm{Cu}}^{+}\left(\mathrm{aq}\right) \stackrel{ }{\to } \mathrm{Cu}\left(\mathrm{s}\right) + {\mathrm{Cu}}^{+2}\left(\mathrm{aq}\right)$ 
at 298 K is
1. 6x10⁴
2. 6X10⁶
3. 1.2X10⁶
4. 1.2X10^-6

9. A ray of light falls on a transparent sphere as shown in the figure. If the final ray emerges from the sphere parallel to the horizontal diameter, then calculate the refractive index of the sphere. Consider that the sphere is kept in the air.

1.	\(\sqrt{2}\)	2.	\(\sqrt{3}\)
3.	\(\sqrt{3 / 2}\)	4.	\(\sqrt{4 / 3}\)

10.

A long solenoid has 800 turns per meter length of the solenoid. A current of 1.6 A flows through it. The magnetic induction at the end of the solenoid on its axis is:
1.  $16\times {10}^{-4} \mathrm{T}$
2.  $8\times {10}^{-4} \mathrm{T}$
3.  $32\times {10}^{-4} \mathrm{T}$
4.  $4\times {10}^{-4} \mathrm{T}$