1381: Three students are picked at random from a school having a total of 1000 students. The probability that these three students will have identical data and month of their birth is:
(a) 3/1000
(b) 3/365
(c) 1/(365)2
(d) 1/(365)2
1382: The chemical name of 'Aspirin' is:
(a) Acetyl cynamide
(b) Acetyl salicylic acid
(c) Benzyl salicylate
(d) Tartaric acid
1383: A small weight put on the pressure cooker increases the pressure of steam because:
(a) It is air tight
(b) Area of contact is very small
(c) Density of metal is very high
(d) Pressure builds up irrespective of the weight placed
1384: What would happen if phytoplankton of an ocean is completely destroyed for some reason?
1. The ocean as a carbon sink would be adversely affected.
2. The food chains in the ocean would be adversely affected.
3. The density of ocean water would drastically decrease.
Select the correct answer using the codes given below :
(a) 1 and 2 only
(b) 2 only
(c) 3 only
(d) 1, 2 and 3
1385: The Eighth Five-Year Plan is different from the earlier ones. The critical difference lies in the fact that
(a) it has a considerably larger outlay compared to the earlier plans
(b) it has a major thrust on agricultural and rural development
(c) considerable emphasis is placed on infrastructure growth
(d) industrial licensing has been abolished