The effective cutting of steel with hand hacksaw, which one of the following coolants is suitable ?

Cutting oil

Grease

Lard oil

Kerosene oil

Carry away the heat produced in bearing

Prevent metal-to-metal contact and reduce friction

Prevent entry of foreign material i.e dust, dirt etc. in the bearing

Provide a cushion to a load and shocks

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

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