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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Q:

Improve the bracketed part of the sentence.

Ramesh says, he has already repaid me but I can't recall, so I'll have (to take his word).

 

A) to take his word as true B) to take him at his word
C) to take his for word for it D) no improvement
 
Answer & Explanation Answer: B) to take him at his word

Explanation:
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Filed Under: English
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Q:

Kempegowda Festival was organized in which city ?

A) Hyderabad B) Delhi
C) Mumbai D) Chennai
 
Answer & Explanation Answer: B) Delhi

Explanation:

President Pranab Mukherjee inaugurated the Kempegowda Festival in New Delhi. The festival is organised by the NadaprabhuKempegowda Foundation.

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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

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Q:

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

 

The flora and fauna of Cubbon Park captures our attention more than anything else. But when you take time to look closely at the statue, you will marvel at its sheer grandeur. Sculpted by Sir Thomas Brock, the 11 feet high marble statue is larger than life. It brings out the personality of Queen Victoria, who had been the Monarch of Great Britain from 1837 till 1901, depicting a rather proud, stern person with pronounced features.

In 1906, the statue was unveiled in the city by George Frederick Ernest Albert, Prince of Wales and Duke of Cornwall and York, making it stand in all its glory in its 111th year. Even though there is a wealth of history to the statue, and it was made to appear imposing, the busy Bengalureans would probably refer to it as just another landmark. As the workers are busy in discussion on the instructions given to them, life continues as usual in the Park.


Which of the following is false regarding the Queen Victoria statue in Bengaluru?

A) It is made of marble B) It is 11 feet tall
C) It is 111 years old D) It is standing in Queen Victoria park
 
Answer & Explanation Answer: D) It is standing in Queen Victoria park

Explanation:
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Q:

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

 

I don’t know whether the Madras Photographic Society has anything to do with the recently-publicised Chennai Photo Biennales, the first last year and the next scheduled for 2018, but participant or not, it certainly deserves a bow for being the country’s first photographic society. Its founder was an Army doctor, Alexander Hunter. The Society was founded in 1857, shortly after Lord Canning arrived as Governor-General. Canning and Lady Canning, both photography enthusiasts, were responsible for creating the famed Government series, The People of India. Hunter had still earlier, in 1850, privately started the Madras School of Arts. The School, taken over by Government in 1852, moved from Popham’s Broadway to Poonamallee High Road. There, he and an eight-member committee revised the syllabus, offering two streams, Industrial and Artistic. Hunter was put in charge of the institution, renamed the Government School of Industrial Arts, in 1855. It was the first formal school of Art in the country. In it, Hunter introduced Photography.

Hunter retired in 1868, to be succeeded by Robert Chisholm. No mean photographer, Hunter encouraged the School, it is now the Government College of Arts and Crafts to build up a photographic collection. Unfortunately, little is left of his work, especially the monuments of South India captured by Government photographer Linnaeus Tripe and his assistant C Iyahsawmi. Hunter himself did a series of pictures of the ‘Seven Pagodas’ (Mahabalipuram) and worked with his wards on photographs of the five hill tribes of the Nilgiris. It was at a prize-giving of the School that Hunter urged the Governor to provide it more suitable premises. They came up on the PH Road site in Chisholm’s time and to his design — and remain there.

 

Who was in charge of the Government School of Industrial Arts before Chisholm?

A) Hunter B) Lady Canning
C) Iyahsawmi D) Tripe
 
Answer & Explanation Answer: A) Hunter

Explanation:
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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

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Q:

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

The instructor's rules were simple. Breathe through your mouth, not your nose; else the mask will fog up. Easier said than done; I got it wrong many a time. But once you fought habit and got the hang of it, the panoramic underwater world revealed itself to you with high-definition clarity.

Led by him, I slowly peered through the mask into what till then was crystal-clear water, shimmering in the sunlight. I saw pebbles, sand and my fluid shadow. I was in Nemo's universe. Sea cucumbers, sea anemone, clown fish, star fish, sea horses, parrot fish, butterfly fish and a bevy of colourful salt water fish swam past. A shoal of canary-yellow fish did a merry dance and another with vibrant blue fish followed it. They were oblivious to the snorkelers who struggled to take in the sight of a world so beautiful, so colourful, and resist opening their mouth wide in amazement; the tube would fall off!

The writer saw all of the following except:

A) canary-yellow fish B) sea horses
C) parrot fish D) Vibrant green fish
 
Answer & Explanation Answer: D) Vibrant green fish

Explanation:
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