Questions

Q:

Convex and concave mirrors are examples of?

A) Plane mirrors B) Spherical mirrors
C) Inverted mirror D) Erect mirror
 
Answer & Explanation Answer: B) Spherical mirrors

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Filed Under: Physics
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Q:

Equinox means the date when ___________.

A) duration of day and night are equal B) day is longer than the night
C) night is longer than the day D) it is the shortest day and the shortest night of the year
 
Answer & Explanation Answer: A) duration of day and night are equal

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Filed Under: General Science
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Q:

Who designed the first electronic computer - ENIAC?

A) Joseph M Jacquard B) Von Neuman
C) J presper Eckert and John W Mauchly D) Both A and B
 
Answer & Explanation Answer: C) J presper Eckert and John W Mauchly

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Filed Under: Computer
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Q:

Mendel is known as

A) Father of Physiology B) Father of Geology
C) Father of Genetics D) Father of Biology
 
Answer & Explanation Answer: C) Father of Genetics

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Filed Under: General Awareness
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Q:

In the following question, out of the four alternatives, select the alternative which best expresses the meaning of the idiom/phrase.

to bite your tongue

 

A) to cause self­inflicting harm B) to make a desperate effort to avoid saying something
C) harsh words once spoken can never come back D) to be astonished
 
Answer & Explanation Answer: B) to make a desperate effort to avoid saying something

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Q:

The Chemical formula of Cadmium nitrate is _____.

A) Cd(NO3)2 B) CdNO3
C) Cd2(NO3)2 D) Cd2NO3
 
Answer & Explanation Answer: A) Cd(NO3)2

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Filed Under: Chemistry
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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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Q:

In the following question, some part of the sentence may have errors. Find out which part of the sentence has an error and select the appropriate option. If a sentence is free from error, select ‘No Error’.

The biggest problem faced by (1)/ all developing countries is the (2)/ lack of training manpower. (3)/ No error (4)

A) 1 B) 2
C) 3 D) 4
 
Answer & Explanation Answer: C) 3

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Filed Under: English
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