Questions

Q:

India’s most polluted and least polluted states are

A) Uttarakhand & Rajasthan B) Uttar Pradesh & Kerala
C) New Delhi & Rajasthan D) Uttar Pradesh & Uttarakhand
 
Answer & Explanation Answer: B) Uttar Pradesh & Kerala

Explanation:

Uttar Pradesh is the most polluted state in India, with 15 of its cities among 30 cities with highest levels of toxic air in the country. Prime Minister Narendra Modi’s constituency Varanasi turned out to be the worst polluted city of UP. Countrywide, it came sixth.

Other towns and cities in UP on the list are Hapur, Bareilly, Firozabad, Kanpur, Agra, NOIDA, Allahabad, and Mathura where PM10 levels were way above permissible limits.

Kerala is the least polluted state in the country, India. In all the 14 districts of the state, NAAQ(National Ambient Air Quality Standards) standards are complied with and had lower concentrations of PM10. However, all the cities surpassed the PM10 standards prescribed by WHO.


The report - Airpocalypse II - is based on air pollution related data collected from Central and State Pollution Control Boards and Committees.

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Q:

A man stands on the pan of a balance holding a fish in his right hand and bucket of water in his left hand. If he transfers the fish into the bucket, the total weight on the pan 

A) increases B) decreases
C) remains the same D) first increases and then decreases
 
Answer & Explanation Answer: C) remains the same

Explanation:

Before transferring the fish, the position is the man with the fish and the bucket of water. After transferring the position is: the man without the fish, but the fish inside the water in the bucket. Thus to know  whether there is any change in weight, it is enough to consider whether there is any change in weight when the fish in air is transferred into the water. The answer is there is no change as when in water though it loses weight due to upthrust of water on it, the level of water increases and exerts an equal force at the bottom.So, (c) is correct.

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Q:

Which is an invention that improved safety for railway passengers?

A) Air brakes B) Refrigerated rail cars
C) Time standardization D) Pullman sleeping cars
 
Answer & Explanation Answer: A) Air brakes

Explanation:

An invention that improved safety for railway passengers is Air brakes. With the use of air brakes using compressed air, become more effective by preventing many train accidents.

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Q:

A man stands on the pan of a balance holding a fish in his right hand and bucket of water in his left hand. If he transfers the fish into the bucket, the total weight on the pan

A) increases B) decreases
C) remains the same D) first increases and then decreases
 
Answer & Explanation Answer: C) remains the same

Explanation:

Before transferring the fish, the position is the man with the fish and the bucket of water. After transferring the position is : the man without the fish, but the fish inside the water in the bucket. Thus to know whether there is any change in weight, it is enough to consider whether there is any change in weight when the fish in air is transferred into the water. The answer is there is no change as when in water though it loses weight due to upthrust of water on it, the level of water increases and exerts an equal force at the bottom

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Q:

National Khadi Festival 2018 held in

A) Hyderabad B) Kolkata
C) Bangaluru D) Mumbai
 
Answer & Explanation Answer: D) Mumbai

Explanation:
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Q:

The term "simple carbohydrates" refers to

A) polysaccharides B) monosaccharides and disaccharides
C) starch and glycogen D) dietary fiber
 
Answer & Explanation Answer: B) monosaccharides and disaccharides

Explanation:

Simple carbohydrates are also called as Simple sugars. Monosaccharides and Disaccharides refers to simple carbohydrates.

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Q:

Point out the error, if any, in the following program.

# include "stdio.h"

main()

{

     FILE *fp;

     char str[80];

     fp = fopen ("trail", "r");

     while (!feof (fp))

    {

           fgets (str, 80, fp);

           puts (str);

     }

     fclose (fp);

}

Answer

The last line from the file "trial" would be read twice. To avoid this, ues:


       While ( fgets (str, 80, fp) ! = NULL)


               puts (str);

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Subject: Programming

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Q:

The technique of DNA fingerprinting in human was developed for first time by _________

A) Lalji Singh B) Alec Jeffreys
C) R. Ericson D) J. Black
 
Answer & Explanation Answer: B) Alec Jeffreys

Explanation:
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