Questions

Q:

A solid ball of metal has a spherical cavity inside it. When the ball is heated the volume of the cavity will

A) increase B) decrease
C) remain unaffected D) have its shape changed
 
Answer & Explanation Answer: A) increase

Explanation:

The metal ball can be considered  to be made up of several layers of thinner ones. On heating each of these layers will increase in radius. As the inner most layer also increases its radius, the volume inside it i.e, the volume of the hollow portion will also increase.

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Filed Under: Physics

118 21685
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.


The Bengalureans would refer to the Queen Victoria statue as ____________.

A) wealth of history B) a landmark
C) Symbol of British rule D) Bengaluru culture
 
Answer & Explanation Answer: B) a landmark

Explanation:
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Filed Under: English
Exam Prep: Bank Exams

0 21660
Q:

What is the oxidation number of sulfur in H2S?

A) 2 B) -2
C) 1 D) -1
 
Answer & Explanation Answer: B) -2

Explanation:

The sum of the oxidation numbers in a compound must equal zero. In the compound hydrogen sulfide, H2S, the two hydrogen atoms have an oxidation number of +1, for a total of +2.

 What_is_the_oxidation_number_of_sulfur_in_H2S1556279499.jpg image

Therefore, the oxidation number of sulfur in the compound is -2, and the sum of the oxidation numbers is 0.

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Filed Under: Chemistry
Exam Prep: GATE , CAT , Bank Exams , AIEEE
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31 21653
Q:

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

Genetic variation is the cornerstone of evolution, without which there can be no natural selection, and so a low genetic diversity decreases the ability of a species to survive and reproduce, explains lead author Yoshan Moodley, Professor at the Department of Zoology, University of Venda in South Africa.

Two centuries ago, the black rhinoceros – which roamed much of sub Saharan Africa – had 64 different genetic lineages; but today only 20 of these lineages remain, says the paper. The species is now restricted to five countries, South Africa, Namibia, Kenya, Zimbabwe and Tanzania. Genetically unique populations that once existed in Nigeria, Cameroon, Chad, Eritrea, Ethiopia, Somalia, Mozambique, Malawi and Angola have disappeared. The origins of the 'genetic erosion' coincided with colonial rule in Africa and the popularity of big game hunting. From the second half of the 20th century, however, poaching for horns has dramatically depleted their population and genetic diversity, especially in Kenya and Tanzania.


Sub Sharan Africa has lost how many black rhino genetic lineages in 200 years?

A) 64 B) 20
C) 44 D) 30
 
Answer & Explanation Answer: C) 44

Explanation:
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Filed Under: English
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0 21622
Q:

Jiling-Langlota Iron ore Block and Guali Iron ore Block, have been inaugurated in which Indian state?

 

A) Odisha B) Jharkhand
C) Bihar D) Chhattisgarh
 
Answer & Explanation Answer: A) Odisha

Explanation:
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Filed Under: Indian Geography
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1 21597
Q:

Out of the following remains excavated in indus valley,which one indicates the commercial and economic development

A) Pottery B) Seals
C) Boats D) Houses
 
Answer & Explanation Answer: B) Seals

Explanation:
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Filed Under: Indian History

54 21591
Q:

Improve the bracketed part of the sentence.

The guide's (knowledge) of the history of the monument surprised me.

A) knowing B) familiarity
C) know how D) no improvement
 
Answer & Explanation Answer: D) no improvement

Explanation:
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Filed Under: English
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1 21582
Q:

Improve the bracketed part of the sentence.

 

If a person (studied) the history of the Maratha empire, he would have wondered how a small warrior tribe could have challenged the mighty Mughals.

A) has studied B) had studied
C) could study D) no improvement
 
Answer & Explanation Answer: B) had studied

Explanation:
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Filed Under: English
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