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Q:

Which of the following is not true about Frictional force?

 

A) Friction is the force which opposes the relative motion of two surfaces in contact B) The force of friction that acts when a body is moving (sliding) on a surface is called sliding friction
C) Friction in machines wastes energy and also causes wear and tear D) Rolling friction is much more than sliding friction, the use of ball bearings in a machine considerably reduces friction
 
Answer & Explanation Answer: D) Rolling friction is much more than sliding friction, the use of ball bearings in a machine considerably reduces friction

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Filed Under: Physics
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Q:

Select the antonym of

snag

A) hurdle B) boon
C) bug D) glitch
 
Answer & Explanation Answer: B) boon

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Filed Under: English
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Q:

The journalist who refused to accept Padma Bhushan was

A) Shekharan Nair B) Khushwant Singh
C) Arun Shourie D) Ratan Thiyam
 
Answer & Explanation Answer: B) Khushwant Singh

Explanation:

Khushwant Singh (Journalist) : Returned his Padma Bhushan in protest against Operation Blue Star (1984); awarded Padma Vibhushan in 2007.

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Filed Under: Honours and Awards

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Q:

A ‘breath test’ used by traffic police to check drunken driving uses ____?

A) Turmeric on filter paper B) Silica gel coated with silver nitrate
C) potassium permanganate-sulphuric acid D) Potassium dichromatic-sulphuric acid
 
Answer & Explanation Answer: D) Potassium dichromatic-sulphuric acid

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Filed Under: Chemistry
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Q:

Dissolving is best described as

 

A) molecules breaking into ions B) a change from a solid to a liquid
C) breaking covalent bonds D) a mingling of molecules and/or ions
 
Answer & Explanation Answer: D) a mingling of molecules and/or ions

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Filed Under: Chemistry
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Q:

What is the heat released by a heating filament rated 20 W when it is kept on for 2 seconds?

 

A) 40 B) 10
C) 80 D) 20
 
Answer & Explanation Answer: A) 40

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Q:

Who among the following is not a recipient of Bharat Ratna

A) Dr. S. Radhakrishnan B) Sardar Vallabhbhai Patel
C) Mrs. Indira Gandhi D) Lal Bahadur Shastri
 
Answer & Explanation Answer: B) Sardar Vallabhbhai Patel

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Q:

Rearrange the parts of the sentence in correct order.

The twenty ­four tributes
P - ­that could hold anything from a
Q­ - will be imprisoned in a vast outdoor arena
R­ - burning desert to a frozen wasteland

A) PQR B) PRQ
C) QPR D) RQP
 
Answer & Explanation Answer: C) QPR

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Filed Under: English
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