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111.

Through food chain radioactive Sr (Sr90) is deposited in which part of human body?

A.	Kidnies	B.	Thyroid
C.	Bones	D.	Muscles

112.

It is moderately quiet between:

A.	35-45 db	B.	1-5 db
C.	40-60 db	D.	65-75 db

113.

The noise created at the launching of space rocket measures around:

A.	120 db	B.	150 db
C.	180 db	D.	240 db

114.

The waste of steel factories is rich in:

A.	Cyanides and phenols	B.	Chlorides and fluorides
C.	Carbonates and sulphides	D.	Bicarbonates and chlorides

115.

The noise level of London is around:

A.	120-170 db	B.	90-160 db
C.	100-130 db	D.	100-160 db

116.

In 1970, several people died in Japan due to pollution of:

A.	Barium	B.	Cadmium
C.	Iron	D.	Mercury

117.

To check sonic booms, control should be exerted over:

A.	Traffic on high ways	B.	Sirens of every kind
C.	Air traffic directions	D.	Noise producing devices

118.

Mark the plant showing insecticidal properties:

A.	Ocimum basilicum	B.	Azadirachta indica
C.	Both (a) & (b)	D.	Dalbergia sissoo

119.

The first nuclear explosion was conducted by USA in:

A.	Jun-44	B.	Sep-44
C.	Jul-45	D.	Aug-45

120.

Maximum noise pollution in residential areas is due to:

A.	Traffic sirens	B.	Sirens and loud speakers
C.	Kitchen appliances, radion and TV	D.	Industries