The refrigerant freon-12 is chemically_______________________?

Related Mcqs:

Case hardening is not done by________________?

A. Nitriding B. Hot dipping C. Electroplating D. Both ‘B’ & ‘C’...

In “Imperial Smelting Process” for extraction of zinc, zinc vapour thus produced is quenched in the external condenser by the use of the following _______________________?

A. Jet of water at high pressure B. Blast of air C. Mixture of water and air D. Rain of molten lead...

The heat of neutralisation remains constant, when there is a reaction between dilute solutions of strong _____________________?

A. Base and strong acid B. Base and weak acid C. Acid and weak base D. None of these...

The highest stress that a material can withstand for a specified length of time without excessive deformation is called the ____________ strength ?

A. Creep B. Endurance C. Fatigue D. None of these...

Brazing filler metal used for joining steel plates_________________?

A. Melts below the melting points of base metals B. Melts below 300°C C. Is copper phosphorous alloy D. Is copper...