Exams


Q:

What is an error in a program called

A) Power fail B) Crash
C) Virus D) Bug
 
Answer & Explanation Answer: D) Bug

Explanation:

In computer technology, a coding error in a computer program is called a bug.

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Q:

Which formula represents an amino acid?

A) R-CH3(NH2)-COOH B) R-CH(NH2)-COOH
C) R-CH2(NH2)-COOH D) R-CH3(NH2)-COH
 
Answer & Explanation Answer: B) R-CH(NH2)-COOH

Explanation:

Amino acids are the building blocks of proteins. There are about 21 essential amino acids in the human body like histidine, leucine, lysine... The general formula for amino acid is R-CH(NH2)-COOH.

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Filed Under: Biology
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Q:

Who deciphered the Brahmi and Kharoshthi scripts?

A) Piyadassi B) Colin Mackenzie
C) Alexander Cunningham D) James Prinsep
 
Answer & Explanation Answer: D) James Prinsep

Explanation:

The inscriptions of Asoka were first deciphered by James Princep in 1837. They are written in Pali language and in some places Prakrit was used. The Brahmi script was employed for writing.In the northwestern India Asokan inscriptions were found in Karoshti script.

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Filed Under: Indian History
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Q:

When a piece of pure silicon is doped with aluminium, then

A) the conductivity of the doped silicon piece will remain the same B) the doped silicon piece will become n-type
C) the doped silicon piece will become p-type D) the resistivity of the doped silicon piece will increase
 
Answer & Explanation Answer: C) the doped silicon piece will become p-type

Explanation:

p type of semiconductor is obtained when Silicon is doped with a trivalent impurity like Aluminium. Aluminium is a p-type dopant, which means that when a semiconductor i.e. silicon is doped with aluminium, it creates a hole (positively charged carrier) by accepting an electron from the silicon atom. Electrical conductivity of semiconductors increasesand resistivity remains the same

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Filed Under: Physics
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Q:

In three coloured boxes - Red, Green and Blue, 108 balls are placed. There are twice as many balls in the green and red boxes combined as there are in the blue box and twice as many in the blue box as there are in the red box. How many balls are there in the green box ?

A) 76 B) 54
C) 64 D) 48
 
Answer & Explanation Answer: B) 54

Explanation:

Let R, G and B represent the number of balls in red, green and blue boxes respectively.

Then, .

R + G + B = 108 ...(i),

G + R = 2B ...(ii)

B = 2R ...(iii)

From (ii) and (iii), we have G + R = 2x 2R = 4R or G = 3R.

Putting G = 3R and B = 2R in (i), we get:

R + 3R + 2R = 108 6R = 108 R = 18.

Therefore Number of balls in green box = G = 3R = (3 x 18) = 54.

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Filed Under: Arithmetical Reasoning
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Q:

Who has won the Hero Indian Golf Open 2017 ?

A) Gavin Green B) S.S.P. Chawrasia
C) Anirban Lahiri D) Scott Jamieson
 
Answer & Explanation Answer: B) S.S.P. Chawrasia

Explanation:

Chawrasia, became the first Indian to successfully defend a European Tour title and the first player to win their first four events in their home country.

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Q:

Manish completes a work in 20 days. After 8 days Sriram joined the work. In how many days will the work be completed  ?

Statements :

I. Sriram takes twice the time than Manish to complete the work.
II. Sriram completes half the work in 15 days.

A) Statement I alone is sufficient to answer the question B) Statement II alone is sufficient to answer the question
C) Either the statements I & II is sufficient to answer the question D) Neither the statements I & II is sufficient to answer the question
 
Answer & Explanation Answer: C) Either the statements I & II is sufficient to answer the question

Explanation:

From statement I,

Time taken by Sriram to complete the work = 40 days

From statement II,

Time taken by Sriram to complete the wok = 30 days

So from both either by statement I or statement II we can find the time to complete the work.

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Filed Under: Statement and Assumptions
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Q:

Molar mass of HNO3?

A) 63 g/mol B) 53 g/mol
C) 48 g/mol D) 52 g/mol
 
Answer & Explanation Answer: A) 63 g/mol

Explanation:

Calculation of molar mass of HNO3:

Atomic masses of H, N, O are 1, 14, 16 respectively

Now the molar mass of HNO3 is

HNO3 = 1X1 + 1X14 + 3X16

= 1 + 14 + 48

= 63 g/mol or amu.

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Filed Under: Chemistry
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