Percentage of argon (by volume) in dry atmospheric air is about________________?

Related Mcqs:

A reduction in thermal resistance during heat transfer does not occur in the___________________?

A. Convection heat transfer by stirring the fluid and cleaning the heating surface B. Conduction heat transfer by reduction in the material thickness and increase in the thermal conductivity C. Radiation heat transfer by increasing the temperature and reducing the emissivity D. None of these...

In practice, the compression ratio of compression-ignition (CI) engine ranges from ______________________?

A. 15 to 25 B. 5 to 10 C. 40 to 55 D. 60 to 70...

Quartz is a ________________ material ?

A. Diamagnetic B. Ferromagnetic C. Ferroelectric D. Piezoelectric...

Which of the following metals is the most prone to work hardening ?

A. Brass B. Aluminium C. Copper D. Lead...

Ammonia leakage in the refrigeration system is detected by_________________?

A. Sulphur stick, which on detection gives white smoke B. Using chemical reagents C. Its smell D. Soap solution...