This is a timed quiz. You will be given 120 seconds to answer all questions. Are you ready?
120
From which mineral is radium obtained?
Correct!
Wrong!
Which of the following is used in pencils ?
Correct!
Wrong!
Washing soda is the common name for?
Correct!
Wrong!
Amalgams are?
Correct!
Wrong!
Brass gets discolored in air because of the presence of which of the following gases in air?
Correct!
Wrong!
Which of the following does not contain a coinage metal?
Correct!
Wrong!
The most important ore of aluminium is?
Correct!
Wrong!
Permanent hardness of water can be removed by adding?
Correct!
Wrong!
Science Quiz 143
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