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.

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What is/are common to the two historical places known as Ajanta and Mahabalipuram?

1. Both were built in the same period.
2. Both belong to the same religious denomination.
3. Both have rock-cut monuments.

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The Montague-Chelmsford Proposals were related to 

`SWAYAM', an initiative of the Government of India, aims at 

What is/are the purpose/purposes of `District Mineral Foundations' in India?

1. Promoting mineral exploration activities in mineral-rich districts
2. Protecting the interests of the persons affected by mining operations
3. Authorizing State Governments to issue licences for mineral exploration

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Recently, India's first 'National Investment and Manufacturing Zone' was proposed to be set up in