Q. Piezoelectric is a material

View solution

Q. Oxygen content below __________ percent in air contaminated with nitrogen does not support combustion and is unsafe for humane exposure.

View solution

Q. Moist air is cooled along the line of constant __________ , when it is passed over a cold & dry cooling coil, such that no condensation occurs.

View solution

Q. Which of the following has rotten eggy smell ?

View solution

Q. Freezing of 35% oleum during its shipment in winter is avoided by the addition of small amount of

View solution

Q. In hot working, dynamic recovery occurs in

View solution

Q. Which of the following manufacturing processes produces the strongest components ?

View solution

Q. Cast iron compared to steel is better in

View solution

Q. Sewage is not an excellent medium for the growth of

View solution

Q. Which of the following pair is correctly matched?

View solution

Q. Rate of chemical reaction is not much affected, if the reactants are in __________ form.

View solution

Q. Materials used for making permanent magnets containing iron and nickel are made by __________ technique.

View solution

Q. Lubrication is done to control

View solution

Q. In 18-4-1 high speed steel, 18, 4 & 1 respectively denote the percentage of

View solution

Q. Role of a "collector" in froth floatation is to

View solution

Q. For the running of power generating turbines, the steam used should be

View solution

Q. Creep consideration is the most important in case of the

View solution

Q. The diffusion co-efficient of Ni in Cu at 1000 K is 1.93 x 10⁻¹⁶ m² . S⁻¹ and it is 1.94 x 10⁻¹⁴ m² S⁻¹ at 1200 K. The activation energy (in k. J.mole⁻¹ ) for the diffusion of Ni in Cu is

View solution

Q. The magnitude of water hammer caused in pipe flow is independent of the

View solution

Q. A metalloid possesses the characteristics of both the metals and non-metals. Which of the following is not a metalloid ?

View solution