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Chemistry

Chemistry
The polymer obtained by the condensation of hexamethylene diamine and adipic acid is :

Nylon 66
Bakelite
Tollen's
Terylene

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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

D
C
A
B

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Chemistry
The common refrigerant in domestic refrigerator is

Freon
Nitrogen
Oxygen
Neon

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Chemistry
What do you understand by the term Espuma ?

Calcium
Soap
Salt
Foam

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Chemistry
Gas released during Bhopal tragedy was :

Sodium isothiocyanate
Methyl isothiocyanate
Potassium isothiocyanate
Ethyl isothiocyanate

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Chemistry
Sulphuric acid is

Tribasic
Monobasic
Dibasic
Tetrabasic

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