Questions

Q:

What is a Safe State and what is its use in deadlock avoidance?

Answer

When a process requests an available resource, system must decide if immediate allocation leaves the system in a safe state. System is in safe state if there exists a safe sequence of all processes. Deadlock Avoidance : ensure that a system will never enter an unsafe state.

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Q:

With reference to the first battle of freedom in 1857, who was related to Jhansi ?

A) Chandra Shekhar Azad B) Rani Lakshmi Bai
C) Mangal Pandey D) Bhagat Singh
 
Answer & Explanation Answer: B) Rani Lakshmi Bai

Explanation:
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Q:

4 mat-weavers can weave 4 mats in 4 days. At the same rate, how many mats would be woven by 8 mat-weavers in 8 days?

A) 4 B) 8
C) 12 D) 16
 
Answer & Explanation Answer: D) 16

Explanation:

Let the required number of bottles be x.

 

 

 

More weavers, More mats (Direct Proportion)

 

 

 

More days, More mats (Direct Proportion)

 

 

 

Wavers   4:8Days       4:8  :: 4:x

 

 

 

 4 x 4 x x = 8 x 8 x 4

 

 

 

=> x= 8*8*44*4

 

 

 

=>  x = 16.

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Q:

Chemical name of Gold?

A) Argentinum B) Ferrus
C) Aurum D) Selenium
 
Answer & Explanation Answer: C) Aurum

Explanation:

The Chemical name of Gold is Aurum with symbol Au with atomic number 79 and a group 11 element. In its purest form, it is a bright, slightly reddish yellow, dense, soft, malleable, and ductile metal.

Chemically, gold is a transition metal.

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Q:

When is the ' World AIDS Day ' observed all over the world

A) 1st october B) 12th December
C) 1st December D) 13th November
 
Answer & Explanation Answer: C) 1st December

Explanation:
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Q:

Which formula represents a nonpolar molecule?

A) H2O B) CF4
C) HCl D) H2S
 
Answer & Explanation Answer: B) CF4

Explanation:

You have to consider three things.

1. First, are the bonds polar?

Look at differences in electronegativity and if  it is >0.5, bonds are polar.

 

2. Second, does the molecule have unshared electron pairs?

If so, they generally lead to a polar molecule.

 

3. Third, is the molecule symmetric?

If so, then although the bonds may be polar, the symmetry cancels out the individual bond polarity and the molecule is non polar.

CF4 follows all the rules above and has a symmetric distribution of charge, making it nonpolar. The others all have asymmetric charge distributions.

 

Hence, CF4 represents a Non-polar molecule.

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Q:

GNLF stands for

A) Gorkha National Liberation Front B) Gross National Liberation Form
C) Both option A and B D) None of the above
 
Answer & Explanation Answer: A) Gorkha National Liberation Front

Explanation:

GNLF stands for Gorkha National Liberation Front.

 

Gorkha National Liberation Front (GNLF) is a political party in the Darjeeling District of West Bengal, India. It was formed in 1980 by Subhash Ghisingh with the objective of demanding a Gorkhaland state within India.

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Q:

N.R. Narayana Murthy was recently presented with the 2014  'Global India Award' in Canada. He is the executive chairman of which of the following companies?

A) Infosys B) Wipro
C) IBM D) TCS
 
Answer & Explanation Answer: A) Infosys

Explanation:
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