3261: Assertion (A) :
Large cold storage plants use ammonia as refrigerant while domestic refrigerators use chlorofluorocarbons.
Reason (R) :
Ammonia can be liquefied at ambient temperatures at low pressures.
(a) Both A and R are true, and R is the correct explanation of A
(b) Both A and R are true, but R is not a correct explanation of A
(c) A is true, but R is false
(d) A is false, but R is true
3262: Permanent hardness of water cannot be removed by:
(a) Boiling
(b) Adding caustic soda
(c) Distillation
(d) Adding soda
3263: Rabies is caused by a
(a) Virus and it affects the nervous system
(b) Virus and it affects the cardiovascular system
(c) Bacteria and it affects the nervous system
(d) Bacteria and it affects the cardiovascular system
3264: Participatory Notes (PNs) are associated with which one of the following ?
(a) Kyoto Protocol
(b) Foreign Institutional Investors
(c) Consolidated Fund of India
(d) United Nations Development Programme
3265: With reference to Bitcoins, sometimes seen in the news, which of the following statements is/are correct?
1. Bitcoins are tracked by the Central Banks of the countries.
2. Anyone with a Bitcoin address can send and receive Bitcoins from anyone else with a Bitcoin address.
3. Online payments can be sent without either side knowing the identity of the other.
Select the correct answer using the code given below.
(a) 1 and 2 only
(b) 2 and 3 only
(c) 3 only
(d) 1, 2 and 3