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Chemistry

Chemistry
A thick paste of cement, sand and water is called

R.C.C.
Kiln
Mortar
Concrete

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Chemistry
Which of the following fuels causes minimum environmental pollution?

Coal
Diesel
Kerosene
Hydrogen

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Chemistry
The gas that is used in the manufacture of vanaspati ghee is :

Hydrogen
Oxygen
Nitrogen
Carbon dioxide

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Chemistry
Brass gets discoloured in air due to constant exposure in presence of:

Aluminium sulphide
Hydrogenated wafers
Aluminium phosphide
Hydrogen sulphide

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Chemistry
The addition of gypsum to portland cement helps in :

Preventing rapid setting of cement
Rapid setting of cement
Increasing the strength of cement
Reduction in the cost of cement

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Chemistry
Brass is a solution of molten copper in

Molten tin
Molten zinc
Solid zinc
Gaseous zinc

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MORE MCQ ON Chemistry

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