Viscosity index improver (like polystyrene or polyisobutylene) is added to lubricant to
Reduce its viscosity
Increase its viscosity
Reduce the variation in its viscosity with temperature
Increase the variation in its viscosity with temperature
- Which of the following is a constituent of vinegar?
- Chemical name of 'alum' is
- Hydrazine (N2H4) is used mainly as a/an
- Pick out the wrong statement pertaining to the properties of glasses. Glasses generally have
- Epoxy resin
- Phosphate rock is a raw material for the manufacture of
- Producer gas consists mainly of
- Which is a high grade pulp?
- Thermal pyrolysis of ethylene dichloride produces
- Laboratory glass wares which reacts with hydrofluoric acid, are made of the __________ glass.
- Viscose rayon is
- Ethyl alcohol cannot be produced
- Main constituent of limestone is
- Permanent hardness of water can be removed by
- Ore concentration by froth floatation utilises the __________ of ore particles.
- __________ is produced using Polycondensation reaction.
- Insulin is an __________ drug.
- More than 100 percent of __________ is present in oleum.
- Catalytic oxidation of naphthalene produces
- Main constituents of natural rubber is
- Flux addition during smelting of ore is done to
- Polycaprolactam is commercially known as
- Which of the following is used as a binding material in soap to improve soap texture?
- The function of gypsum addition during cement making is to
- Catalyst used in the manufacture of sulphuric acid by chamber & contact processes are respectively
- Which of the following is an unsaturated fatty acid?
- Phenol formaldehyde
- Which of the following processes can remove both temporary as well as permanent hardness of water?
- Diaphragm electrolytic cell as compared to mercury electrolytic cell
- Zeolite is used in the