Noise level heard inside a bus in busy city traffic or inside a sub-way train corresponds to about ______________ decibels?

Related Mcqs:

In water treatment plant, zeolite process is used to remove the _____________ of water?

A. Acidity B. Alkalinity C. Hardness D. Iron & zinc...

Black smoke coming out of the chimney of a furnace is an indication of the use of ______________ in the furnace?

A. Low amount of excess combustion air B. Large quantity of excess combustion air C. Hydrocarbon fuel D. Pulverised coal as fuel...

TLV of mercury in potable (drinking) water is about ______________ ppm?

A. 0.001 B. 0.1 C. 1 D. 5...

The resistance of water to the passage of light through it is a measure of the___________________?

A. Turbidity B. Color C. Hardness D. Dissolved gases...

Presence of high concentration of ozone and smog in atmospheric air causes the __________________?

A. Embrittlement & decrease of folding resistance of paper B. Cracking of rubber products C. Fading of dye on textiles D. Damage of electrical insulator on high tension power line...