No change in viscosity due to variation in temperature

Reduces friction between machine parts

Takes up the surface pressure between sliding parts

Becomes thicker after prolonged use

One part cement, two parts sand and four parts stone.

One part stone, two parts cement and four parts sand.

One part sand, two parts stone and four parts cement.

One part cement, two parts stone and four parts sand.

Viscosity

Specific gravity

Specific heat

Emulsification

Mix soluble oil and water by pouring both simultaneously

Add water to the soluble oil

Add soluble oil to the water

None of the above

With high pressure jet

With a brush

With an oilcan

Either 'B' or 'C'