This is a timed quiz. You will be given 15 seconds per question. Are you ready?
15
Permanent hardness of water can be removed by adding?
Correct!
Wrong!
From which mineral is radium obtained?
Correct!
Wrong!
Which of the following does not contain a coinage metal?
Correct!
Wrong!
The property of a substance to absorb moisture from the air on exposure is called ?
Correct!
Wrong!
Potassium Permanganate is used for purifying drinking water, because?
Correct!
Wrong!
Heavy water is?
Correct!
Wrong!
The most important ore of aluminium is?
Correct!
Wrong!
Which metal pollute the air of a big city?
Correct!
Wrong!
Science Quiz 49
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