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61
Metal that remains in a liquid state above 35°C temperature is:
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Answer: Option C
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62
What is the Chemical symbol of Lead?
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Answer: Option A
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63
Hard steel contains
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Answer: Option B
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64
Match List I with List II.
List-I List-II
a. Blue vitriol 1. Sodium bicarbonate
b. Epsom salt 2. Sodium hydroxide
c. Baking soda 3. Magnesium sulphate
d. Caustic soda 4. Copper sulphate
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Answer: Option B
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65
German silver is an alloy of
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Answer: Option D
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66
Which is the most reactive metal?
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Answer: Option D
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67
What does lime make by reacting with chlorine?
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Answer: Option D
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68
Identify the liquid metal used in the thermometer.
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Answer: Option A
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69
Which of the following metal (shown by its symbol) is generally used for making filaments of bulb?
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Answer: Option D
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70
. . . . . . . . metal reacts intensely with cold water.
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Answer: Option A
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