Permanent hardness of water can be removed by___________________?

Related Mcqs:

Low temperature carbonisation of coal takes place at _______________ °C ?

A. 300 B. 1100 C. 700 D. 900...

20% oleum means that in 100 kg oleum, there are 20 kg of_____________________?

A. SO3 and 80kg of H2SO4 B. H2SO4 and 80kg of SO3 C. SO3 for each 100 kg of H2SO4 D. None of these...

Digestion of wood-base materials (for manufacture of pulp) is done to __________________?

A. Remove lignin B. Produce long fibres C. Prevent deterioration on storage D. None of these...

The basic constituent of vegetable oils is ___________________?

A. Triglyceride B. Fatty acids C. Fatty alcohol D. Mono esters...

Phosphate rock is a raw material for the manufacture of____________________?

A. Phosphoric acid B. Phosphorous C. Superphosphates D. All A , B. and C...