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Chemistry

61.

Which metal is heaviest ?

Answer: C

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62.

Which of the following is the strongest acid?

Answer: C

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63.

In atomic reactors,graphite is used as

Answer: D

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64.

The names of the scientists, Newlands, Mendeleev, and Meyer are associated with the development of

Answer: C

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65.

Which of the following does not contain the material particles

Answer: C

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66.

Energy produced in nuclear reaction is given by

Answer: D

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67.

The number of water molecules present in a drop of water (volume 0.0018 ml) at room temperature is

Answer: B

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68.

Which one of the following elements is the poorest conductor of heat

Answer: B

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69.

The metal that is used as a catalyst in the hydrogenation of oils is

Answer: A

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70.

Blue litmus paper is converted into red in solution of _______

Answer: A

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