3726: In how many different ways can all of 5 identical balls be placed in the cells shown below such that each row contains at least 1 ball ?
(a) 64
(b) 108
(c) 81
(d) 84
3727: Assertion (A):
There was an increase in industrial production during 1999-2000.
Reason (R):
The period witnessed a stable exchange rate and improved business sentiments.
(a) Both A and R are individually true, and R is the correct explanation of A
(b) Both A and R are individually true, but R is NOT a correct explanation of A
(c) A is true, but R is false
(d) A is fasle, but R is true
3728: Pulse reading is done by doctors to find out:
(a) Temperature
(b) Heart beat
(c) Blood pressure
(d) Respiration rate
3729: Raja Rammohan Roy was supporter of:
(a) Sati
(b) Widow re-marriage
(c) Child marriage
(d) Learning of Sanskrit
3730: What can be the impact of excessive / inappropriate use of nitrogenous fertilizers in agriculture?
1. Proliferation of nitrogen-fixing microorganisms in soil can occur.
2. Increase in the acidity of soil can take place.
3. Leaching of nitrate to the ground-water can occur.
Select the correct answer using the code given below.
(a) 1 and 3 only
(b) 2 only
(c) 2 and 3 only
(d) 1, 2 and 3