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1
Which one of the following elements forms the maximum number of compounds?
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Answer: Option B
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2
What is the eye irritating compound when cutting onions?
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Answer: Option C
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3
Only those metals can displace hydrogen from water, which are . . . . . . . . in the electrochemical series of metals?
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Answer: Option B
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4
. . . . . . . . is the main component of cement.
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Answer: Option C
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5
The chemical formula of ammonium sulphate is . . . . . . . .
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Answer: Option B
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6
Name the group of modern periodic table in which all elements are gases?
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Answer: Option A
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7
Which gas is used in aerated water?
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Answer: Option A
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8
One of the reasons for the formation of strong bonds by carbon is its . . . . . . . . shape.
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Answer: Option C
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9
If any of the following non-metals are placed in the air, then it ignites?
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Answer: Option D
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10
Which of the following gases is not inert gas?
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Answer: Option D
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