Main constituent of dolomite is
CaCO3
MgCO3
K2CO3
Na2CO3
- Dechlorination of treated water is necessary to
- Pick out the wrong statement.
- Commercial scale production of hydrogen from iron-steam reaction represented by, 3Fe + 3H2O = Fe3O4…
- Pick out the true statement pertaining to water treatment.
- P.T.F.E. (Poly tetra fluoro ethylene) is commercially known as
- One of the steps during refining of cane sugar consists of addition of hydrated lime to the sugar syrup…
- Phenol formaldehyde is produced by condensation polymerisation. It is also known as
- Resistance to fusion of the refractory under a steady rising temperature condition is called
- The compressive strength of cement should not be less than about 110Kg/cm2 after three days & not less…
- Oxygen is separated by distillation from air after its liquefaction. The boiling point of oxygen is…
- Dacron (or Terylene) fibres as compared to nylon fibres have
- Alcohol is produced by the
- __________ is obtained as a by-product in the manufacture of sodium hydroxide using brine.
- Air used in aerobic fermentation must be sterilized, otherwise the
- Shrinkage volume in cement setting does not depend upon the
- Main constituent of dolomite is
- A mineral is termed as 'ore', if
- Enzymes are
- Which of the following has sodium bicarbonate as its main constituent?
- Sodium bisulphite is used for __________ water.
- Rosin soap is added during paper manufacture to
- The main product of high temperature carbonisation of coal is
- Viscosity index improver (like polystyrene or polyisobutylene) is added to lubricant to
- Glycerine can be obtained from
- Percentage of alcohol in beer may be around __________ percent.
- Low purity oxygen is used for
- Comparing sulphate process with sulphite process, we find that __________ in the later.
- Parathion and Malathion are
- Phenol is mainly used
- __________ process is used for producing soda ash.