Questions

Q:

If length of a rectangle is decreased by 6 cm we get a square and the area of square formed is 252 cm2 less than the area of square formed when breadth of the original rectangle is increased by 6 cm. Find the perimeter of the rectangle.

A) 66 cm B) 88 cm
C) 80 cm D) 72 cm
 
Answer & Explanation Answer:

Explanation:

Let length and breadth of rectangle be L cm
and B cm respectively So, ATQ
Area1= (L-6)×B
But this is square, so L-6=B
Area1= (L-6) × (L-6)
Case 2, Area2= L × (B+6),
L=B+6
So, Area2= L × L,
Given, Area2-Area1= 252(L)2-(L-6)2=252
Solving this, L= 24
B= 18
Perimeter= 2(L+B)= 2(24+18)= 84 cm

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Q:

Which team advanced to the Coap America Finals 2011 without winning any of its five matches in open play?

A) Brazil B) Paraguay
C) Venezuela D) Peru
 
Answer & Explanation Answer: B) Paraguay

Explanation:
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Q:

Highest - Profit making company in India is 

A) Tata Sons B) Reliance Industries
C) Indian Oil D) ONGC
 
Answer & Explanation Answer: D) ONGC

Explanation:
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Q:

Who among the following was the religious guru of Shivaji?

A) Ram Das B) Tukaram
C) Jnaneshwar D) Eknath
 
Answer & Explanation Answer: A) Ram Das

Explanation:

The religious guru of Shivaji was Ram Das.

who_was_the_religious_guru_of_Shivaji1547630263.jpg image

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Filed Under: Indian History
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Q:

Iteration is most similar in meaning to

A) Ending B) Looping
C) Starting D) None of the above
 
Answer & Explanation Answer: B) Looping

Explanation:

Iteration is most similar in meaning to the word repeatation i.e, looping.

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Filed Under: English
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Q:

Gasoline is useful in cars because it has

A) chemical potential energy B) electrical potential energy
C) gravitational potential energy D) kinetic energy
 
Answer & Explanation Answer: A) chemical potential energy

Explanation:

Gasoline is a colorless petroleum-derived flammable liquid that is used primarily as a fuel in spark-ignited internal combustion engines. It consists mostly of organic compounds obtained by the fractional distillation of petroleum, enhanced with a variety of additives. It is also called as Petrol. It has chemical potential energy, in combustion it is turned into light, sound, heat and kinetic energy.

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Filed Under: Physics
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Q:

Explain the concept of Reentrancy?

Answer

It is a useful, memory-saving technique for multiprogrammed timesharing systems. A Reentrant Procedure is one in which multiple users can share a single copy of a program during the same period. Reentrancy has 2 key aspects: The program code cannot modify itself, and the local data for each user process must be stored separately. Thus, the permanent part is the code, and the temporary part is the pointer back to the calling program and local variables used by that program. Each execution instance is called activation. It executes the code in the permanent part, but has its own copy of local variables/parameters. The temporary part associated with each activation is the activation record. Generally, the activation record is kept on the stack.


Note: A reentrant procedure can be interrupted and called by an interrupting program, and still execute correctly on returning to the procedure.

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Q:

Which one is not the isotopes of hydrogen

A) Protium B) Deuter
C) Tritium D) All
 
Answer & Explanation Answer: C) Tritium

Explanation:
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Filed Under: Chemistry

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