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Chemistry

Chemistry
The hydronium ion is

HO -
H2+
H3O+
H+

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Chemistry
Diamonds are glittering and attractive because light incident on them undergoes

Multiple internal reflections
Hundred percent transmission
Multiple surface reflections
Highest refraction

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Chemistry
The “King of Metals” is :

Gold
Silver
Iron
Aluminium

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Chemistry
The monomer of polythene is

ethyl alcohol
vinyl chloride
ethylene
None of these

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Chemistry
Sea weeds are important source of

Bromine
Iodine
Iron
Chlorine

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Chemistry
Which one of the following is not a cause for present global warming and climate change ?

CFC emission
Carbondioxide emission
Deforstation
Methane emission

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