Q:

Consider the following statements with respect to Bitcoins or 'cryptocurrencies' as they are commonly known; I. Bitcoin is a decentralized electronic payment system II. Only a finite number of bitcoins can be created by miners III. Bitcoins are indivisible units of currency IV. Every single bitcoin transaction is recorded in a ledger called the blockchain. Which of the above statements are correct?

A) (i), (ii) and (iii)	B) (i), (iii) and (iv)
C) (i), (ii) and (iv)	D) (i), (ii), (iii) and (iv)

Answer & Explanation Answer: C) (i), (ii) and (iv)

Explanation:

A software developer called Satoshi Nakamoto proposed bitcoin, which was an electronic payment system based on mathematical proof. The idea was to produce a currency independent of any central authority, transferable electronically, more or less instantly, with very low transaction fees. Bitcoin’s most important characteristic, and the thing that makes it different to conventional money, is that it is decentralized. Bitcoin is created digitally, by a community of people that anyone canjoin. Bitcoins are ‘mined’, using computing power in a distributed network.This network also processes transactions made with the virtual currency, effectively making bitcoin its own payment network.The bitcoin protocol –the rules that make bitcoin work –say that only 21 million bitcoins can ever be created by miners. However, these coins can be divided into smaller parts (the smallest divisible amount is one hundred millionth of a bitcoin and is called a ‘Satoshi’, after the founder of bitcoin). Bitcoin stores details of every single transaction that ever happened in the network in a huge version of a general ledger, called the blockchain.

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Filed Under: Indian Economy

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Q:

In the following question, out of the four alternatives, select the alternative which is the best substitute of the phrase.

work extremely hard or incessantly.

A) job	B) craft
C) toil	D) activity

Answer & Explanation Answer: C) toil

Explanation:

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Filed Under: English
Exam Prep: Bank Exams

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Q:

Sunspots appear dark because they are

A) hotter than the rest of the Sun's surface.	B) more magnetic than the rest of the Sun's surface.
C) cooler than the rest of the Sun's surface.	D) None of the above

Answer & Explanation Answer: C) cooler than the rest of the Sun's surface.

Explanation:

Sunspots are a magnetic phenomenon on the Sun.

The reason a sunspot appears dark is that they are cooler than the rest of the Sun's surface and also the gas inside the spot where the magnetic field is strongest is only emitting about 1/4 as much light as from the rest of the solar surface.

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Filed Under: Physics
Exam Prep: Bank Exams , CAT

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Q:

In the following passage, some of the words have been left out. Read the passage carefully and select the correct answer for the given blank out of the four alternatives.

All this suggests the intimate relations which exist between history, politics, and sociology. The ____________ thing, however, is not the identities but the distinctions.For, however much the _____________ disciplines may, in practice, overlap, it is necessary ________ the sake of clear thinking to have their limits defined. As far _______sociology and history are concerned the differences may be summed up in a word. __________ history and sociology are concerned with the life of man as man.

it is necessary ________ the sake of clear thinking

A) for	B) of
C) to	D) from

Answer & Explanation Answer: A) for

Explanation:

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Filed Under: English
Exam Prep: Bank Exams

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Q:

In the following question, out of the given four alternatives, select the one which is opposite in meaning of the given word.

Usurp

A) Annex	B) Displace
C) Grab	D) Surrender

Answer & Explanation Answer: D) Surrender

Explanation:

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Filed Under: English
Exam Prep: Bank Exams

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Q:

Edward Jenner discovered vaccine for which of the following disease?

A) Polio	B) Tuberculosis
C) Small Pox	D) Rabies

Answer & Explanation Answer: C) Small Pox

Explanation:

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Filed Under: Inventions
Exam Prep: Bank Exams

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Q:

Who Invented Lawnmower?

A) Edwin Howard Armstrong	B) John Barber
C) Edwin Beard Budding	D) Nicholas Callan

Answer & Explanation Answer: C) Edwin Beard Budding

Explanation:

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Filed Under: Inventions
Exam Prep: Bank Exams

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Q:

Which is the second highest civillian award given in India?

A) Bharat Ratna	B) Padma Vibhushan
C) Padma Bhushan	D) Padma Shri

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