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Chemistry

Chemistry
Muscle fatigue is caused by the accumulation of :

Lactic acid
Pyruvic acid
Oxalacetic acid
Uric acid

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Chemistry
Which one is the naturally occuring heaviest element

Uranium
Thorium
Protactinium
Mercury

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Chemistry
Which of the following acts as promoter for iron in Haber's process

W
Mo
Mn
Mg

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Chemistry
Mark the compound which possess ionic, covalent and coordinate bonds.

SO2
H2O
SO3
NH4Cl

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Chemistry
Which one of the following is used as a sowing agent in the preparation of soft drinks?

Phosphoric acid
Salicylic acid
Boric acid
Phosphorus acid

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Chemistry
The following are the half lives of four active isotopes. Which one of the following is the most dangerous to handle?

100 years
0.01 minute
13 days
3 billion years

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