2606: Azolla gives a good biofertilizer when mixed with:
(a) Blue-green algae
(b) Cow dung
(c) Bone-meal
(d) Urea
2607: The largest number of Buddhists is found in
(a) Bihar
(b) Karnataka
(c) Maharashtra
(d) Uttar Pradesh
2608: If a potato is placed on a pure paper plate which is white and unprinted and put in a microwave oven, the potato heats up but the paper plate does not. This is because:
(a) Potato contains water whereas paper does not contain water
(b) Potato transmits microwaves whereas paper reflects microwaves
(c) Potato is mainly made up of starch whereas paper is mainly made up of cellulose
(d) Potato is a fresh organic material whereas' paper is a dead organic material
2609: Which of the following is/are the advantage /advantages of practising drip irrigation?
1. Reduction in weed
2. Reduction in soil salinity
3. Reduction in soil erosion
Select the correct answer using the code given below.
(a) 1 and 2 only
(b) 3 only
(c) 1 and 3 only
(d) None of the above is an advantage of practising drip irrigation
2610: A person X has four notes of Rupee 1, 2, 5 and 10 denomination. The number of different sums of money she can form from them is
(A) 15
(B) 16
(C) 12
(D) 8