8th class Science Chapter 1 online mcq test with answers for chapter 1

Top Scorers Of Chapter 1 "General Science 8th Class English Medium Chapter 1 Online Test" MCQ`s Test

Sr.#	Question	Answer
1	Consumers that actively hunt other organism are called.	A. Prey B. Competitor C. Predator D. Symbiont
2	Th graphical epresentation of tropihic relationship oforaganisms in an ecosystem is called.	A. Food Chian B. Ecological pyramid C. Trophic level D. Predation
3	The poisonous and harmsful substances which make the air unfavorable for life are called.	A. Solid pollutant B. Air pollutant C. Water pollutant D. Acid Rain
4	During the combustion of fossil fuel. Which gas is ener the atmosphere.	A. Nitrogen B. Oxygen C. Carbon di oxide D. Hydrogen
5	The energy of the Sun in traped as chemical energy by.	A. Tertiary consumers B. Primary consumers C. Producers D. Secondary consumers
6	------------- through the food chain is one of the most important functionsof an ecosystem in maintaining balance of nature.	A. Waisting of energy B. Destroy fo energy C. Transfer of energy D. Produce of energy
7	Carbon cycle and ............. cycle are teh processes in whihc these minerals circulate between the organisms and the environment.	A. Hydrogen B. Iodine C. Oxygen D. Nitrogen
8	Which is the solution of environmental problems.	A. Reducing pollution B. Plantation C. Protection of endangered D. All these
9	A relationship where two species live together closely is called	A. Symbiosis B. Predation C. Competitor D. None of these
10	Which factor is responsible for ecological imbalance.	A. Over hunting B. Change in water supply C. Migration D. All these