Sex horomones affected to increased to D.D.T,Lead damages the brain and gradually cause death, Stratophere is full of ozone

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Free Online Mock Biology Multiple Choice Test on Organism and Environment

Sub Category : Organism and Environment	Test : 11	Time Left :
1.Sex hormones are affected due to increased amount of
(1) Urea (2) B.H.C (3) D.D.T. (4) Cadmium
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2.......damages the brain and gradually cause death
(1) Lead (2) Cadmium (3) Mercury (4) Asbestos
1 2 3 4
3.High concentration of.......causes disappearance of chlorophyll.
(1) CO2 (2) SO2 (3) Fluornes (4) Ozone
1 2 3 4
4.On heating, Rocks, Soils and Minerals gives.....toxic gas?
(1) Sulphur dioxne (2) CO2 (3) CO (4) Hydrogen fluoride
1 2 3 4
5.Stratophere is full of.....?
(1) SO2 (b) CO2 (c) Ozone (4) Oxnes of Nitrogenss

1 2 3 4
	1 2 3 4

Free Online Mock Biology Multiple Choice Test on Organism and Environment