Velocity of a gas in sound is not proportional to (where, T = Absolute temperature of the gas. P = Absolute pressure of the gas. y = Ratio of specific heats (Cp/Cv) ρ = specific weight of the gas) ?

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With increase in impurities in metals, their corrosion resistances____________________?

A. Increase B. Decrease C. Remain same D. May increase or decrease; depending on the type of metal...

Out of the following _______________ iron has the best capability to bear sudden & excessive shocks?

A. White B. Cast C. Wrought D. Pig...

Earing is a defect found in steels after the following metal working operation ?

A. Extrusion B. Rolling C. Deep drawing D. Wire drawing...

An abrupt and sudden fall in the reading of barometer is an indication of the____________________?

A. Storm B. Rain C. Clear weather D. Cold wave...

The activity co-efficient of the solute in a dilute solution ?

A. Decreases with the increase of concentration of the solute B. Increases with the increase of concentration of the solute C. Remains constant D. Is unity at infinite dilution...