Sound travels in air at an average speed of nearly________ ?

Related Mcqs:

The variety of coal in which the deposit contains recognizable traces of the original plant material is____________?

A. bitumen B. anthracite C. lignite D. peat...

When oil and gas resources are burnt they kill many forests and lakes by ________________ ?

A. deforestation B. water pollution C. acid rain D. forest fire...

Pollutants that are introduced into the environment by human activity are called as ___________?

A. Qualitative pollutants B. Quantitative pollutants C. Anthropogenic pollutant D. All of Above...

What is the effect of height increase over temperature?

A. Temperature increase B. Temperature decrease C. Remains constant D. None...

another name RDX?

CYANOHYDRIN DEXTRAN CYCLOHEXANE CYCLONITE  ...