10th Class Chemistry Chapter Wise Online MCQ Test With Answers PDF English Medium

9th Class Chemistry English Medium Online Test For Full Book

Sr. #	Questions	Answers Choice
1	The earth atmosphere is getting hotter because of :	SO<sub>2</sub> O<sub>3</sub> CO<sub>2</sub> CO
2	How many percentage of sunlight is absorbed by atmosphere gases.	12% 18% 24% 30%
3	Which one of the following is not air pollutants?	N<sub>2</sub> CO NO<sub>2</sub> O<sub>2</sub>
4	Ozone is beneficial for us as it absorbs.....................	Infrared Radiations Ultraviolet radiations Chlorofluorocarbons Air pollutants
5	At the height 880120 km from earth's surface is.	Troposphere Mesosphere Stratosphere Thermosphere
6	Ozone is formed in:	Troposphere Stratosphere Mesosphere Thermosphere
7	The stratosphere layer is at height above the earth's surface.	0-12 km 12-50 km 50-85 km 65-120 km
8	Infrared radiation emitted by the earth are absorbed by?	CO<sub>2</sub>,H<sub>2</sub>O N<sub>2</sub>,O<sub>2</sub> CO<sub>2</sub>,N<sub>2</sub> O<sub>2</sub>,CO<sub>2</sub>
9	On which base atmosphere is divided into four regions?	Change in pressure Change in rediation Change in temperature Change in volume
10	Depending upon temperature variation, atmosphere ins divided into how many regions?	1 2 3 4
11	75% atmosphere mass lies in how many kilometers.	11 km 30 km 50 km 85 km
12	The layer above troposphere extend upto 50 kilometers called.	Mesosphere Hydrosphere Stratosphere Thermosphere