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Chemistry

Chemistry
Which of the following elements is obtained from sea weeds ?

Vanadium
Argon
Iodine
Sulphur

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Chemistry
Catalytic converters are generally made from :

Carbon
Transition metals
Hydrogen
Alkaline metals

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Chemistry
A subshell with l=2 can take up

10 electron
5 electron
3 electron
8 electron

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Chemistry
Which is the heaviest metal among the following?

Silver
Iron
Gold
Copper

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Chemistry
Normal rainwater has a pH level of

8.3
6.3
3.2
5.6

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Chemistry
Which of the following is the strongest base in aqueous solution ?

Ethylamine
Ammonia
Triethylamine
Diethylamine

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