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Chemistry

Chemistry
1 carat of diamond is equal to

100 mg
100 g
200 mg
200 g

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Chemistry
The atomic number of carbon is 6 and its atomic mass is 12. How many are there protons in the nucleus of carbon ?

18
Zero
6
12

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Chemistry
Identify the metal which is non toxic in nature.

Chromium
Cobalt
Gold
Cadmium

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Chemistry
A subshell with l=2 can take up

10 electron
8 electron
5 electron
3 electron

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Chemistry
Which one of the following contains maximum percentage of carbon ?

High speed steel
Stainless steel
Cast iron
Wrought iron

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Chemistry
Electrolysis of an aqueous solution of copper sulphate using copper electrodes gives

Hydrogen at cathode and oxygen at anode
Copper at cathode and anodes dissolve to give copper
Copper at cathode and oxygen at anode
Copper at anode and oxygen at cathode.

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