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Chemistry

301.

The heat required to raise the temperature of body by 1 K is called

Answer: B

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302.

Which one of the following metals does not react with water to produce Hydrogen?

Answer: C

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303.

Which of the following gases is the most toxic?

Answer: D

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304.

The half life period of an isotope is 2 hours. After 6 hours what fraction of the initial quantity of the isotope will be left behind?

Answer: C

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305.

pH of water is

Answer: C

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306.

Which of the following is used to preserve specimens in the biology laboratory?

Answer: C

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307.

The term PVC used in the plastic industry stands for

Answer: A

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308.

The hottest part of the gas flame is known as

Answer: D

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309.

----------  proposed the first atomic theory ?

Answer: C

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Answer: B

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