Every Day Science Section-4 | Multiple Questions and Answers

11.	Which one of the following is the main culprit in the thinning of Ozone layer in the earthâ€™s stratosphere?

	A.	Carbon dioxide
	B.	Chlorofluorocarbon
	C.	Methane
	D.	Karnataka

12.	The property by virtue of which metals can be beaten into thin sheets is known as:

	A.	Ductility
	B.	Conductivity
	C.	Malleability
	D.	Methane

13.	The sky appears blue because the earthâ€™s atmosphere:

	A.	Scatters blue light
	B.	Reflects blue light
	C.	Transmitted blue light
	D.	Malleability

14.	A tight-rope walker carries a long pole which he holds across his body. The purpose of this pole is to:

	A.	Prop him up if he falls
	B.	Spread out his weight and reduce the pressure on the rope
	C.	To keep the center of gravity always vertically above the rope
	D.	None of these