3186: 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
3187: Which of the following can be said as the 'Theory of Darwin'
(a) Survival of the fittest and struggle for existence
(b) Weak and strong always maintain a fixed proportion
(c) Different species do not arise by genetic mutation
(d) None of these
3188: The rough outline map shows a portion of the Middle East. The countries labelled A, B, C and D are respectively
(a) Syria, Iraq, Jordan and Saudi Arabia
(b) Syria, Iraq, Saudi Arabia and Jordan
(c) Iraq, Syria, Saudi Arabia and Jordan
(d) Iraq, Syria, Jordan and Saudi Arabia
3189: High tides at antipodes are caused due to:
(a) Gravitational pull of the moon and the sun
(b) Gravitational pull of the sun
(c) Centrifugal, centripetal and gravitational pull of the sun
(d) Centrifugal, centripetal and gravitational pull of the sun and the moon
3190: Which one of the following is not a member of the Shanghai Cooperation Organisation ?
(a) Russia
(b) Ukraine
(c) Kazakhstan
(d) Uzbekistan