301: A person has 4 coins each of different denomination. What is the number of different sums of money the person can form (using one or more coins at a time)?
(A) 15
(B) 16
(C) 10
(D) 12
302: Which substance is commonly used in refrigerators?
(a) Freon
(b) Oxygen
(c) Ammonia
(d) Sulphur dioxide
303: In which of the following areas can GPS technology be used?
1. Mobile phone operations
2. Banking operations
3. Controlling the power grids
Select the correct answer using the code given below:
(a) 1 only
(b) 2 and 3 only
(c) 1 and 3 only
(d) 1, 2 and 3
304: The terms Wanna Cry, Petya and Eternal Blue' sometimes mentioned in the news recently are related to
(a) Exo-planets
(b) Crypto-currency
(c) Cyber attacks
(d) Mini satellites
305: Consider the following statements
1. The first woman President of the Indian National Congress was Sarojini Naidu.
2. The first Muslim President of the Indian National Congress was Badruddin Tyabji.
Which of the statements given above is / are correct?
(a) 1 only
(b) 2 only
(c) Both 1 and 2
(d) Neither 1 nor 2