Questions

Q:

The freezing point of water at 760mm pressure is

A) 0 K B) 273 K
C) 273 C D) -273 C
 
Answer & Explanation Answer: B) 273 K

Explanation:

K is degree kelvin

Zero K corresponds to -273  K = C + 273

The freezing point of water being 0 C, on the kelvin scale it is 0 C + 273 K

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Filed Under: Chemistry

12 9930
Q:

Atmospheric pressure exerted on earth is due to

A) gravitational pull B) rotation of earth
C) revolution of earth D) uneven heating of earth
 
Answer & Explanation Answer: A) gravitational pull

Explanation:

The atmospheric pressure at the surface of the Earth is due to gravitational pull of the earth and is about 14.7 psi.

 

That means that the weight of a column of air which has a cross section of 1 square inch and which stretches from the surface of the Earth to space is 14.7 pounds. 

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Filed Under: Physics
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7 9928
Q:

'Parakram Diwas' is the birth anniversary of which freedom fighter?

 

A) Subhash Chandra Bose B) Jawaharlal Nehru
C) Mahatma Gandhi D) Sardar Vallabh Bhai Patel
 
Answer & Explanation Answer: A) Subhash Chandra Bose

Explanation:
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Filed Under: Important Days and Years
Exam Prep: Bank Exams

5 9927
Q:

Bachendri Pal became famous for her grand success in the field of

A) Athletics Skiing B) Swimming
C) Mountaineering D) Journalism
 
Answer & Explanation Answer: D) Journalism

Explanation:
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Filed Under: Famous Personalities

17 9922
Q:

Indian federal system is greatly influenced by the federal system in

A) Canada B) Australia
C) United States D) U.S.S.R.
 
Answer & Explanation Answer: A) Canada

Explanation:
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Filed Under: Indian Politics

12 9920
Q:

Which compound is a nonelectrolyte?

A) C2H6O B) HCl
C) Na2CO3 D) NaCl
 
Answer & Explanation Answer: A) C2H6O

Explanation:

C2H6O is a Non-electrolyte.

 

An electrolyte is a compound that conducts an electric current when it is in an aqueous solution or melted. In order to conduct a current, a substance must contain mobile ions that can move from one electrode to the other. All ionic compounds are electrolytes. When ionic compounds dissolve, they break apart into ions which are then able to conduct a current ( conductivity ). Even insoluble ionic compounds such as CaCO 3 are electrolytes because they can conduct a current in the molten (melted) state.

 

A nonelectrolyte is a compound that does not conduct an electric current in either aqueous solution or in the molten state. Many molecular compounds, such as sugar or ethanol, are nonelectrolytes. When these compounds dissolve in water, they do not produce ions.

 

Electrolytes are of 3 types ---- Strong Electrolytes, Weak Electrolytes and Non Electrolytes.

 

Strong Electrolytes ---- Compounds which completely dissolves. ( NaCl, Na2Co3, HCl )

Weak Electrolytes ----- Compounds which do not completely dissolves.

Non Electrolytes ------ Compounds which do not dissolves at all.

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Filed Under: Physics
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1 9919
Q:

Round robin scheduling falls under the category of

A) Preemptive scheduling B) Non preemptive scheduling
C) Both A & B D) None of the above
 
Answer & Explanation Answer: A) Preemptive scheduling

Explanation:

Round-robin (RR) is one of the algorithms employed by process and network schedulers in computing. It falls under the category of Preemptive scheduling. In computing, the running task is interrupted for some time without requiring its cooperation and resumed later when the priority task has finished its execution. This is called preemptive scheduling. 

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Filed Under: Computer
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6 9918
Q:

Which is the point from where an azimuth originates?

A) South B) North
C) East D) West
 
Answer & Explanation Answer: B) North

Explanation:

The azimuth originates at true North i.e, the azimuth originates from the north point. It is a measure of how far an object forms the observer's north point.

 

Azimuth is a technical mapping term which is used to describe the direction of an angle between north and south on a compass circle through which the circle line passes. It is the most common military method to express direction. When using an azimuth, the point from which the azimuth originates is the center of an imaginary circle.

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