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Chemistry

Chemistry
How many neutrons are there in 92U238 atom ?

330
146
92
238

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Chemistry
Solder is an alloy of

Sodium, lead
Tin, lead
Copper, lead
Lead, zinc

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Chemistry
The lowest layer of earth's atmosphere is

Troposphere
Ionosphere
Stratosphere
Mesosphere

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Chemistry
Zinc sulphide is commonly used as

Deodorant
Rodenticide
Herbicide
Fungicide

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Chemistry
Which one is a naturally occuring noble gas

Boron
Sodium
Potassium
Argon

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Chemistry
Total number of naturally occurring elements

110
62
92
98

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MORE MCQ ON Chemistry

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