The ‘laughing gas’ is__________________?

Related Mcqs:

With increase in annealing temperature, the following defect density decreases?

A. Vacancy B. Dislocation C. Grain boundary D. All of these...

Presence of nickel & chromium in steel does not raise its _________________?

A. Elastic limit B. Machining properties C. Ductility D. Resilience...

Pick out the wrong statement about the machinability of metals. Machinability of a metal ?

A. Decreases with increase in strain hardening tendencies B. Decreases with increase in hardness, in general C. Depend on the composition, microstructure and physical & mechanical properties D. Decreases with increases in tensile strength & decrease in grain size...

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) ?

A. √T B. 1/√P C. √y D. 1/√ρ...

Surface tension of a liquid_________________?

A. Is due to intermolecular forces of cohesion B. Decreases with rise in temperature C. Is responsible for the spherical shape of an isolated liquid drop D. All A, B. & C...