Consider the following:
1. Photosynthesis
2. Respiration
3. Decay of organic matter
4. Volcanic action
Which of the above add carbon dioxide to the carbon cycle on Earth?
Consider the following:
1. Photosynthesis
2. Respiration
3. Decay of organic matter
4. Volcanic action
Which of the above add carbon dioxide to the carbon cycle on Earth?
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A genetically engineered form of brinjal, known as the Bt-brinjal, has been developed. The objective of this is:
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A layer in the Earth’s atmosphere called Ionosphere facilitates radio communication. Why?
1. The presence of ozone causes the reflection of radio waves to Earth.
2. Radio waves have a very long wavelength.
Which of the statements given above is/are correct?
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When the bark of a tree is removed in a circular fashion all around near its base, it gradually dries up and dies because:
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A new optical disc format known as the Blu-ray Disc(BD) is becoming popular. In what way is it different from the traditional DVD?
1. DVD supports Standard Definition video while BD supports High Definition Video.
2. Compared to a DVD, the BD format has several times more storage capacity.
3. The thickness of BD is 2.4 mm while that of DVD is 1.2 mm.
Which of the statements given above is/are correct?
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A married couple adopted a male child. A few years later, twin boys were born to them. The blood group of the couple is AB positive and O negative. The blood group of the three sons is A positive, B positive, and O positive. The blood group of the adopted son is
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Recently, “oilzapper” was in the news. What is it?
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Aspartame is an artificial sweetener sold in the market. It consists of amino acids and provides calories like other amino acids. Yet, it is used as a low-calorie sweetening agent in food items. What is the basis of this use?
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What is the difference between a CFL and an LED lamp?
1. To produce light, a CFL uses mercury vapour and phosphor while an LED lamp uses semiconductor material.
2. The average lifespan of a CFL is much longer than that of an LED lamp.
3. A CFL is less energy-efficient as compared to an LED lamp.
Which of the statements given above is/are correct?
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A company marketing food products advertises that its items do not contain trans fats. What does this campaign signify to the customers?
1. The food products are not made out of hydrogenated oils.
2. The food products are not made out of animal fats/oils.
3. The oils used are not likely to damage the cardiovascular health of the consumers.
Which of the statements given above is/are correct?
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