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	Green house gases is	A. Carbon di oxide B. Methane C. Oxides of nitrogen D. All these
2	------------- 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
3	The organisms upon whihc a redator feeds are called.	A. Prey B. Carnivores C. Herbivores D. Producers
4	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
5	All the food chains are joined together to form .....	A. Food web B. Ecologicla pyramid C. Tropicla level D. None of these
6	------------- gas is released when dead organisms are decomposed by the decomposers.	A. Oxygen B. Carbon dioxide C. Nitrogen D. Hydrogen
7	During respiration by the animals, whihc gas is released into the atmosphere.	A. Nitrogen B. Oxygen C. Carbon Di oxide D. Hydrogen
8	During the combustion of fossil fuel. Which gas is ener the atmosphere.	A. Nitrogen B. Oxygen C. Carbon di oxide D. Hydrogen
9	--------occupy the b ase of pyramid.	A. Producers B. Primary canivores C. Herbivores D. Top carnivores
10	The phenomenon which doe snot lead to global warming.	A. Green hous effect B. Ozone depletion C. Deforestation D. Photosynthesis