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71
Which one of following is water gas?
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Answer: Option A
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72
. . . . . . . . is not a allotrope of carbon
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Answer: Option B
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73
Which one of the following non-metals shows allotropy in the liquid state?
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Answer: Option B
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74
Carbongen is
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Answer: Option B
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75
. . . . . . . . is an inert gas
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Answer: Option B
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76
What is the commen in Helium and Argon?
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Answer: Option D
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77
Which of the following element is a greenish yellow gas with a characteristic odor at room temperature?
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Answer: Option B
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78
Which of the following can exist in different forms?
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Answer: Option C
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79
Which one of the following is not alkaline?
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Answer: Option D
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80
Which one of the following gases is colourless and odorless?
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Answer: Option B
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