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Chemistry

Chemistry
'Plaster of Paris' is made by partial dehydration of

Green vitriol
Epsom salt
Blue vitriol
Gypsum salt

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Chemistry
The heat value of combustion of Gasoline is

12600 kJ/kg
39400 kJ/kg
14600 kJ/kg
47000 kJ/kg

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Chemistry
The most volatile of the given liquids is

Liquid
Liquid NH3
Ether
Liquid He

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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

A
C
B
D

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Chemistry
The structure of (HPO3)3 is

Linear
Cyclic
Tetrahedral
Octahedral

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Chemistry
Most commonly used bleaching agent is

Sodium chloride
Alcohol
Carbon dioxide
Chlorine

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