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Chemistry

Chemistry
KMnO4 can be used as a/an

Pesticide
Fertiliser
Disinfectant
Insecticide

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Chemistry
Carbon monoxide is an inflammable gas. Which one of the following is also inflammable?

Oxygen
Hydrogen
Nitrogen
Helium

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Chemistry
What is the chemical symbol of mercury

Mg
Hg
Mr
None of these

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Chemistry
What is the element required for solar energy conversion ?

Ultra pure carbon
Beryllium
Tantalum
Silicon

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Chemistry
Match the List-I with List-II and select the correct answer using the codes given below the listsList-I (Green house gas)List-II(Major source)F.Carbondioxide1.Enteric fermentation in cattleG.Methane2.Burning of fossilH.Chloroflro carbons3.Mercury compounds in waste waterJ.Nitrous oxide4.Nylon production 5.Air conditioner and refrigeration unitsCodes :FGHJA.2154B.3421C.3241D.1234

B
D
C
A

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Chemistry
The depletion of Ozone layer is mainly due to

Volcanic eruptions
Aviation fuels
Chlorofluorocarbons
Radioactive rays

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