Questions

Q:

Permanent Hardness of water can be removed by adding

A) Bleaching powder B) Chlorine
C) Wasshing soda D) Potassium permanganate
 
Answer & Explanation Answer: C) Wasshing soda

Explanation:

Hardness can be removed by adding sodium carbonate (washing soda) or by passing the water through an ion-exchange column.

 

Hardness in water is caused by dissolved magnesium ions and calcium ions. These can get into the water when it comes into contact with limestone and other rocks that contain calcium compounds. This can happen, for example, when rainwater flows over these rocks on its way to a reservoir.

 

Hardness in water is of two types. They are :

1. Temporary hardness

2. Permanent hardness

 

1. Temporary hardness:: Temporary hardness is caused by dissolved calcium hydrogen carbonate.


2. Permanent hardness:: Permanent hardness is caused by dissolved calcium sulfate. Unlike temporary hardness, it is not removed by boiling the water.

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Filed Under: Chemistry
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25 21415
Q:

Improve the given sentence if necessary.

This scooter is not efficient as it used to be; instead it is still a very useful machine.

A) similarly B) further more
C) nevertheless D) No improvement
 
Answer & Explanation Answer: C) nevertheless

Explanation:

‘Instead’ is used as an alternative or substitute and is not relevant in this context. ‘Nevertheless’ will be used as it means ‘inspite of that’. Thus, the correct formation would be, ‘This scooter is not as efficient as it used to be; nevertheless it is still a very useful machine.

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Filed Under: English
Exam Prep: Bank Exams

1 21398
Q:

Which one of the following is not a true fish?

A) Silver fish B) Saw fish
C) Hammer fish D) Sucker fish
 
Answer & Explanation Answer: D) Sucker fish

Explanation:
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Filed Under: Animals and Birds

272 21382
Q:

Two Fathers and Two Sons Riddle

Two fathers and two sons sat down to eat eggs for breakfast. They ate exactly three eggs, each person had an egg. The riddle is for you to explain how

Answer

one of the 'fathers' is also a grandfather. Therefore the other father is both a son and a father to the grandson. In other words, the one father is both a son and a father.

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Subject: Math Puzzles

283 21352
Q:

B.C.Roy Award is given in the field of

A) Journalism B) Medicine
C) Music D) Environment
 
Answer & Explanation Answer: B) Medicine

Explanation:
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31 21307
Q:

Read each sentence to find out whether there is any error in any part

I am senior(a) than him(b) by two years(c). No error.(d)

A) a B) b
C) c D) d
 
Answer & Explanation Answer: B) b

Explanation:

With certain words like, be senior to, be junior to, be superior to, be inferior to, etc. is always followed by ‘to’. Thus, the correct sentence would be, ‘I am senior to him by two years’.

 

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Filed Under: English
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Q:

Read the passage carefully and choose the best answer to each question out of the four alternatives.

"Tryst with Destiny" was a speech delivered by Jawaharlal Nehru, the first Prime Minister of independent India, to the Indian Constituent Assembly in Parliament, on 14th August 1947. It is considered to be one of the greatest speeches of all times and to be a landmark oration that captures the essence of the triumphant culmination of the largely non­violent Indian independence struggle against the British Empire in India.

"Long years ago we made a tryst with destiny, and now the time comes when we shall redeem our pledge, not wholly or in full measure, but very substantially. Freedom and power bring responsibility. The responsibility rests upon the assembly, a sovereign body representing the sovereign people of India. The service of India means the service of the millions who suffer. It means the ending of poverty and ignorance and disease and inequality of opportunity. We cannot encourage communalism or narrow­mindedness, for no nation can be great whose people are narrow in thought or in action.

To the people of India, whose representatives we are, this is no time for petty and destructive criticism, no time for ill will or blaming others. We have to build the noble mansion of free India where all her children may dwell".

Choose the answer which captures Nehru's belief.

A) Nehru believed that India could achieve perfection immediately. B) Nehru said the India's struggle for freedom was new and sudden.
C) Nehru believed that India could take huge steps towards realising its dreams. D) Nehru believed that India's dreams were too unrealistic.
 
Answer & Explanation Answer: C) Nehru believed that India could take huge steps towards realising its dreams.

Explanation:
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0 21295
Q:

Part IV of Constitution of India deals with

A) Fundamental Rights B) Citizenship
C) Directive Principles of state Policy D) Union Executive
 
Answer & Explanation Answer: C) Directive Principles of state Policy

Explanation:

Part_IV_of_Constitution_of_India_deals_with1556274385.jpg image

 

Part IV of Constitution of India deals with Directive Principles of state Policy.

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