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Chemistry

Chemistry
Nucleons are regarded as composites sub-particles known as

Mesons
Photons
Quarks
Leptons

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Chemistry
Pollutant from motor car exhaust that causes mental disease is

Lead
SO2
Hg
NO2

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Chemistry
When formaldehyde and potassium hydroxide are heated, we get

Acetylene
Ethyl formate
Methyl alcohol
Methane

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Chemistry
Lead in water can cause

Eye disease
Kidney damage
Arthritis
Hair falling

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Chemistry
The number of neutrons present in an element having mass number 226 and atomic number 88 is :

50
88
138
314

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Chemistry
The atmospheric gas that is mainly responsible for Green House effect :

Oxygen
Carbondioxide
Ozone
Nitrogen

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