Questions

Q:

The  optical  phenomenon  that  is  primarily responsible  for  the  observation  of  rainbow on a rainy day is 

A) diffraction B) interference
C) dispersion D) reflection
 
Answer & Explanation Answer: C) dispersion

Explanation:

A rainbow is a natural spectrum appearing in the sky after a rain shower. It is caused by dispersion of sunlight by tiny water droplets, present in the atmosphere. A rainbow is always formed in a direction opposite to that of the Sun. The water droplets act like small prisms. They refract and disperse the incident sunlight, then reflect it internally, and finally refract it again when it comes out of the raindrops.

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Q:

During the motion of a projectile fired from the earth surface, _______

A) its kinetic energy remains constant B) its momentum remains constant
C) vertical component of its velocity remains constant D) horizontal component of its velocity remains constant
 
Answer & Explanation Answer: D) horizontal component of its velocity remains constant

Explanation:
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Q:

Improve the bracketed part of the sentence.
Neha was (surprised by) her result.

A) surprised to B) surprised from
C) surprised at D) No improvement
 
Answer & Explanation Answer: C) surprised at

Explanation:
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Q:

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


Without breakfast, all of us ­ irrespective of age ­ are likely to experience the late morning slump; tiredness, sleepiness and the urge to sit back. Our efficiency goes down further as the day progresses.Moreover, skipping the first meal of the day leads to intense hunger pangs by late morning and we end up eating chips, samosas, burgers or other high­ fat unhealthy foods. Break fast­skippers are more likely to be overweight. A good breakfast leads to a more active, productive day. Research has found a definite connection between skipping breakfast and memory impairment in both young and older adults. Moreover, breakfast is directly linked with performance in school and college. Breakfast should contribute at least one ­fourth of our daily requirement of nutrients. An ideal breakfast should contain adequate amounts of carbohydrates, proteins and fats in addition to minerals and vitamins. Essentially this means including most of our food groups in the morning meal. Whole grain cereals ­ like atta in parathas and puris, dalia, suji, etc. are an integral part of the traditional Indian breakfast. Their high fibre and protein content provides a feeling of satisfaction, which lowers the urge to snack before lunch. On the other hand, high­ sugar foods actually make people sleepier, not active.

Milk, cheese, eggs or dals (as sprouts in idli or dosas or as sambhar) are other protein sources. A serving of milk (one cup) provides B­ complex vitamins and also minerals like zinc, magnesium and calcium. Fruits or vegetables provide valuable vitamin C and keep constipation away.

 

A good breakfast

A) keeps you active B) causes memory loss
C) boosts performance D) keeps you active; boosts performance
 
Answer & Explanation Answer: D) keeps you active; boosts performance

Explanation:
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Q:

Innate immune system defenses include

A) phagocytosis B) B cells
C) plasma cells D) T cells
 
Answer & Explanation Answer: A) phagocytosis

Explanation:
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Q:

Which base is found only in RNA?

A) Thyamine B) Adenine
C) Uracil D) Cytosine
 
Answer & Explanation Answer: C) Uracil

Explanation:
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Q:

A passage is given with five questions following it. Read the passage carefully and select the best answer to each question out of the given four alternatives.

 

He wasn't the first, nor would he be the last, but the wiry, bespectacled man from Gujarat is certainly the most famous of the world's peaceful political dissidents. Mohandas Gandhi – also affectionately known as Mahatma – led India's independence movement in the 1930s and 40s by speaking softly without carrying much of a big stick, facing down the British colonialists with stirring speeches and non-violent protest. More than anything else, historians say, Gandhi proved that one man has the power to take on an empire, using both ethics and intelligence.

 

Urges Britain to quit India

It is hard to imagine the thin, robed Gandhi working in the rough and tumble world of law, but Gandhi did get his start in politics as a lawyer in South Africa, where he supported the local Indian community's struggle for civil rights. Returning to India in 1915, he carried over his desire to improve the situation of the lower classes.

 

Gandhi quickly became a leader within the Indian National Congress, a growing political party supporting independence, and traveled widely with the party to learn about the local struggles of various Indian communities.

 

It was during those travels that his legend grew among the Indian people, historians say.

 

Gandhi was known as much for his wit and intelligence as for his piety. When he was arrested several more times over the years for his actions during the movement,  Gandhi calmly fasted in prison, believing that his death would embarrass the British enough to spur independence, which had become the focus of his politics by 1920.

 

Gandhi's non-cooperation movement, kicked off in the early 1920s, called for Indians to boycott British goods and traditions and become self-reliant. His most famous protest came in 1930, when Gandhi led thousands of Indians on a 250-mile march to a coastal town to produce salt, on which the British had a monopoly.

 

According to the passage, British had a monopoly of producing which of the product?

A) Indigo B) Khadi
C) Salt D) Rice
 
Answer & Explanation Answer: C) Salt

Explanation:
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Q:

In the UN how many territories were placed under the trusteeship system

A) 11 B) 12
C) 13 D) 14
 
Answer & Explanation Answer: A) 11

Explanation:
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