HARD
10th Chhattisgarh Board
IMPORTANT
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You are given an element; how will you identify whether it is metal or non-metal? Give three means.

Important Questions on Chemistry of Non-Metals

HARD
10th Chhattisgarh Board
IMPORTANT
Write the balanced chemical equations for reactions of calcium, lithium and aluminium with hydrogen.
EASY
10th Chhattisgarh Board
IMPORTANT
Which gas is used in packaged foods and why?
MEDIUM
10th Chhattisgarh Board
IMPORTANT
In laboratory, oxygen is collected in an upturned, water-filled test tube or gas jar. Why?
MEDIUM
10th Chhattisgarh Board
IMPORTANT
The solution of water of which of the following will be acidic
MEDIUM
10th Chhattisgarh Board
IMPORTANT
Which of the following elements does not exhibit allotropy?
EASY
10th Chhattisgarh Board
IMPORTANT
Which among the following is a metalloid?
EASY
10th Chhattisgarh Board
IMPORTANT
The gas obtained on heating potassium permanganate is
HARD
10th Chhattisgarh Board
IMPORTANT
Compare the physical properties of metals and non-metals?