Questions

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.


What is important for evolution?

A) Genetic variation B) Large population
C) Mixing of species D) Survival of the fittest
 
Answer & Explanation Answer: A) Genetic variation

Explanation:
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0 17062
Q:

The purpose of choke in tube light is

A) Induce high voltage B) Induce low resistance
C) Induce high resistance D) Induce low voltage
 
Answer & Explanation Answer: A) Induce high voltage

Explanation:

When the switch is ON, in a tube light choke is nothing but the coil/ballast ( inductor) which is used to induce the high voltage across it. as we know that inductor has property to induce high voltage for the brief period of time, this high voltage is required to ionize the gases in the starter.

Then gas inside the starter gets ionized due to this full voltage and heats the bimetallic strip that is caused to be bent to connect to the fixed contact. Current starts flowing through the starter. Although the ionization potential of the neon is the little bit more than that of the argon but still due to small electrode gap high voltage gradient is appeared in the neon bulb and hence glow discharge is started first in a starter.

As voltage gets reduced due to the current causes a voltage drop across the inductor, the strip cools and breaks away from the fixed contact. At that moment a large L di/dt voltage surge comes across the inductor at the time of breaking.

This high valued surge comes across the tube light electrodes and strikes penning mixture (mixture argon gas and mercury vapor).

Gas discharge process continues and current gets the path to flow through the tube light gas only due to low resistance as compared to the resistance of starter.

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Q:

The implementation of Jawahar Rojgar Yojana rests with

A) Gram Panchayat B) District Collector
C) State Government D) Union Government
 
Answer & Explanation Answer: A) Gram Panchayat

Explanation:
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Filed Under: Indian Economy

29 17060
Q:

Journalist's Day was celebrated for the first time all over the country on

A) Oct 1,1984 B) Oct 8,1984
C) Oct 20,1984 D) Oct 28,1984
 
Answer & Explanation Answer: D) Oct 28,1984

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28 17046
Q:

Select the synonym of

 

synchronicity

 

A) conformity B) conflict
C) vendetta D) altercation
 
Answer & Explanation Answer: A) conformity

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Q:

Which of the following is the MOST OPPOSITE in meaning to the given word?

Interim

A) Medieval B) Tentative
C)  Interval D)  Permanent
 
Answer & Explanation Answer: D)  Permanent

Explanation:

“Interim” means in or for the intervening period; provisional. Options B and C are synonyms of the word and A and E are irrelevant. “Permanent” is the word which best explains the opposite meaning of “interim”. Thus, option D is the correct answer4

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1 17009
Q:

Where did MS Dhoni make his ODI debut ?

A) Chiittagong B) Dhaka
C) Hyderabad D) Vishakhapatnam
 
Answer & Explanation Answer: A) Chiittagong

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Q:

Improve the bracketed part of the sentence.

If I (just had) the money I would have bought the car.

A) have had B) was having
C) had D) no improvement
 
Answer & Explanation Answer: C) had

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