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Chemistry

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

88
138
314
50

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Chemistry
The presence of Cobalt in Vitamin B12 was established for the first time by

Sodium Nitroprusside test
Spectroscopy
Hydrolysis test
Borax-Bead test

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Chemistry
The heat value of combustion of Gasoline is

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

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Chemistry
What is the principal ore of aluminium ?

Copper
Lignite
Dolomite
Bauxite

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Chemistry
Synthetic detergents are made from

Sodium palmitate
Sodium salt of benzene carboxylic acid
Sodium salt of benzene sulphonic acid
Sodium stearate

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Chemistry
The alkaloid naturally found in coffee, cocoa and cola nut is

Tannin
Morphine
Caffeine
Cocaine

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MORE MCQ ON Chemistry

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