526: Each of the 3 persons is to be given some identical items such that product of the numbers of items received by each of the three persons is equal to 30. In how many maximum different ways can this distribution be done ?
(A) 27
(B) 24
(C) 33
(D) 21
527: Which of the following pairs are correctly matched?
Irrigation Project : State
1. Damanganga : Gujarat
2. Girna : Maharashtra
3. Pamba : Kerala
Select the correct answer using the code given below:
(a) 1, 2 and 3
(b) 1 and 2 only
(c) 2 and 3 only
(d) 1 and 3 only
528: The beginning of urbanisation of the Ganges from the 6th century was mainly attributed to:
(a) Fertility of soil
(b) Trade improvement
(c) Population growth
(d) None of the above
529: What is the pH level of blood of normal person?
(a) 4.5-4.5
(b) 6.45-6.55
(c) 7.35-7.45
(d) 8.25-8.35
530: Consider the following :
1. Bluetooth device
2. Cordless phone
3. Microwave oven
4. Wi-Fi device
Which of the above can operate between 2-4 and 2-5 GHz range of radio frequency band ?
(a) 1 and 2 only
(b) 1, 2 and 4 only
(d) 3 and 4 only
(d) 1, 2, 3 and 4