Questions

Q:

If a+b+c = 6 and ab+bc+ca = 1, then the value of bc(b+c) + ca(c+a) +ab(a+b) +3abc is

A) 33 B) 66
C) 55 D) 23
 
Answer & Explanation Answer: B) 66

Explanation:
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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:

Genes are situated on _________

A) Chromosome B) Mitochondria
C) Plastids D) Ribosomes
 
Answer & Explanation Answer: A) Chromosome

Explanation:
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Filed Under: Biology

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Q:

Per Captain Income of a country derived from

A) National Income B) Population
C) National Income and Population both D) none of these
 
Answer & Explanation Answer: C) National Income and Population both

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Filed Under: Indian Economy

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Q:

What part of the body controls balance?

A) Cerebrum B) Cerebellum
C) Medulla oblangata D) Amygdala
 
Answer & Explanation Answer: B) Cerebellum

Explanation:

The cerebellum is a small part of the brain positioned at the back of the head, where it meets the spine, which acts as the body's movement and balance control centre.

 

Basic-brain-anatomy1524025969.jpg image

 

It's a lot smaller than the cerebrum at only 1/8 of its size. But it's a very important part of the brain.

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Filed Under: Biology
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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:

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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Filed Under: Business Awareness

15 3224
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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