8th Class General Science English Medium MCQ Test With Answer for General Science Full Book

General Science 8th Class English Medium Online Test

Sr. #	Questions	Answers Choice
1	Half of the increase in atmospheric carbon dioxide concentrations in the last.............. years has occured since 1980	100 200 300 400
2	The poisonous and harmsful substances which make the air unfavorable for life are called.	Solid pollutant Air pollutant Water pollutant Acid Rain
3	Ozone is a layer of gases in ............. atmosphere of the Earth.	Upper Lower Middle Inner
4	Green house gases is	Carbon di oxide Methane Oxides of nitrogen All these
5	A symbiotic relationship in whihc both speciesl get benefit is called.	Commensalism Hebitate Mutualism Symbiosis
6	Which factor is responsible for ecological imbalance.	Over hunting Change in water supply Migration All these
7	A relationship where two species live togetehr closely is called.	Mutualism Commensalism Symbiosis Hebitate
8	The organisms upon whihc a redator feeds are called.	Prey Carnivores Herbivores Producers
9	Organism in ecologicla communits interact with one anothe rin....... major ways.	Two three Four Five
10	A food chain starts from the..........	Primary carnivores Herbivores Producers Top carnivores