Which of the following gases is having the widest explosion limit (about 2 to 81% gas in gasair mixture), rendering it the property of the most explosive gas ?

Related Mcqs:

Which of the following is the most active zone of atmosphere in which weathering events like rain, storm & lightning occur ?

A. Thermosphere B. Troposphere C. Stratosphere D. None of these...

Noise produced by cooling fans (employed in air cooled heat exchangers or cooling tower) is mainly caused due to the turbulence created by blade passage through air. It can be reduced by use of a slower fan_________________?

A. With greater number of blades B. Of increased diameter C. Both A. & B. D. Neither A. nor B....

Noise level inside a jet airliner in normal flight is about ______________ decibels?

A. 80 B. 100 C. 125 D. 150...

What are the methods of treatment & disposal of radioactive wastes ?

A. Evaporation & chemical precipitation B. Biological methods & adsorption in ion exchange materials C. Fixing into a solid mass with cement and sinking deep in the sea D. All A., B. & C....

______________ cannot control the noise pollution ?

A. Use of silencers B. Green house gases C. Vibration damping D. Tree plantation...