| 1. | Thyroxine | 2. | Oxypurin |
| 3. | Insulin | 4. | Progesterone |
Which one of the following statements is not true?
| 1. | In vulcanization, the formation of sulphur bridges between different chains makes rubber harder and stronger |
| 2. | The natural rubber has the trans-configuration at every double bond |
| 3. | Buna-S is a copolymer of butadiene and styrene |
| 4. | Buna-S is a copolymer of butadiene and styrene |
In the given hydrocarbon,

The type/state of hybridization of carbons 1, 3, and 5 respectively are:
1. sp2, sp, sp3
2. sp, sp3, sp2
3. sp, sp2, sp3
4. sp3, sp2, sp
The value of KP1 and Kp2 for the reactions
are in the ratio of 9 : 1. If the degree of dissociation of X and A is equal, then the total pressure at equilibrium(i) and (ii) are in the ratio:
1. 3 : 1
2. 1 : 9
3. 36 : 1
4. 1 : 1
In DNA, the complementary bases are:
1. Adenine and thymine; guanine and cytosine
2. Adenine and thymine; guanine and uracil
3. Adenine and guanine, thymine and cytosine
4. Uracil and adenine; cytosine and guanine
The bromination of acetone occurring in an acid solution is represented by the equation.
CH3COCH3(aq)+ Br2(aq) →
CH3COCH2Br(aq) + H+(aq) + Br-(aq)
The kinetic energy data were obtained for given reaction concentrations.
Initial concentrations, M
0.30 0.05 0.05
0.30 0.10 0.05
0.30 0.10 0.10
0.40 0.05 0.20
Initial rate, the disappearance of Br2, Ms-1
5.7 10-5
5.7 10-5
1.2 10-4
3.1 10-4
Based on the above data, the rate of the equation is:
1.
2.
3.
4.
Find the equilibrium constant for the reaction:
H₂(g) + I₂(g) ⇌ 2HI(g)
Given that:
HI(g) ⇌ ½H₂(g) + ½I₂(g) K = 8
| 1. | \(1 \over 16\) | 2. | \(1 \over 64\) |
| 3. | 16 | 4. | \(1 \over 8\) |
The CFSE (in an octahedral field) will be maximum in:
(Atomic number Co = 27)
1.
2.
3.
4.
| 1. | Both lipids and proteins can flip-flop |
| 2. | While lipids can rarely flip-flop, proteins cannot |
| 3. | While proteins can flip-flop, lipids cannot |
| 4. | Neither lipids nor proteins can flip-flop |