Practice Question and Answer
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Q: Harm is caused by ultraviolet radiation coming from the Sun-
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5f8feb2d3ca2d767b182ab0a- 1Lung cancerfalse
- 2Oral cancerfalse
- 3Skin cancertrue
- 4liver cancerfalse
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Answer : 3. "Skin cancer"
Q: Which form of energy does not cause pollution?
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5f8fead09e18f97b703a34ea- 1Coalfalse
- 2Atomfalse
- 3Solartrue
- 4Petrolfalse
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Answer : 3. "Solar "
Q: Which of the following crops make the soil rich in nitrogen?
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5f8fea683ca2d767b182a840- 1Sunflowerfalse
- 2Sorghumfalse
- 3Peastrue
- 4Potatofalse
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Answer : 3. "Peas "
Q: Which of the following provides the highest energy?
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5f8fe932f28f4b47be4c248b- 1Waterfalse
- 2Mineral saltsfalse
- 3Carbohydratetrue
- 4Vitaminfalse
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Answer : 3. "Carbohydrate "
Q: Honey is a major ingredient of
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5f8fe87f7793eb35d726fbe2- 1Glucosefalse
- 2Sucrosefalse
- 3Fructosetrue
- 4Maltosefalse
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Answer : 3. "Fructose "
Q: The pH of human blood is
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5f8fe8293ca2d767b1829dd9- 17.5false
- 27.4true
- 38.1false
- 48.4false
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Answer : 2. "7.4"
Q: A person with color blindness shows red color-
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5f8fe77b9e18f97b703a2854- 1Yellowfalse
- 2Bluefalse
- 3Purplefalse
- 4Greentrue
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Answer : 4. "Green"
Q: Which of the following statements is not correct?
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5f8fd438c380c466d4dd1840- 1The velocity of sound in air increases as the temperature increases.false
- 2The velocity of sound in air does not depend on pressure.false
- 3The velocity of sound in air decreases with the increase of humidity.true
- 4Noise velocity in air is not affected by change in amplitude and frequency.false
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Answer : 3. "The velocity of sound in air decreases with the increase of humidity."
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