Q. Zeolite removes both temporary as well as permanent hardness of water by precipitating calcium and magnesium present in water as insoluble zeolites. Used zeolite is regenerated by flushing with the solution of

View solution

Q. Pick out the endothermic reaction out of the following.

View solution

Q. Pasteurisation of milk means

View solution

Q. Fusion of bauxite and __________ produces high alumina cement.

View solution

Q. Sulphur addition in soap is done to

View solution

Q. Phosphate rock is a raw material for the manufacture of

View solution

Q. Mineral oils (e.g. petroleum oils) are preferred over fatty oils (e.g. mustard oil, ghee, tallow, palm oil, olive oil etc.) as a lubricant due to its

View solution

Q. Which of the following is not a raw material used for the manufacture of ordinary glass?

View solution

Q. Esterification reaction

View solution

Q. __________ process is used for the manufacture of sodium carbonate by ammonia soda process.

View solution

Q. Polycaprolactum is commercially known as

View solution

Q. Frasch process is for

View solution

Q. Very fine suspended and colloidal impurities are removed from water by a process called

View solution

Q. Pitch (a product of coal tar distillation) is always mixed with creosote oil, when it is to be burnt in a burner, because

View solution

Q. Sucrose content in the raw juice extracted from sugar cane is about __________ percent.

View solution

Q. Fusel oil is a/an

View solution

Q. Styrene-butadiene-rubber (SBR) as compared to natural rubber has

View solution

Q. Co-efficient of thermal expansion of glass is decreased by the addition of __________ during its manufacture.

View solution

Q. The catalyst used in the manufacture of DDT (from chloral and chlorobenzene) is

View solution

Q. Fermentation of molasses to produce ethyl alcohol is done at __________ °C

View solution