10th class Chemistry chapter 14 online mcq test with answers for matric part 2 chemistry unit 14(The Atmosphere)

Chemistry 10th Class English Medium Unit 14 Online Test

Sr. #	Questions	Answers Choice
1	About 99% atmosphere's lies within:	30 kilometre 35 kilometre 15kilometre 11 kilometre
2	Ozone id beneficial for us as it:	absorbs infrared radiations absorbs ultraviolet radiation absorbs chlorofluorocarbons absorbs air pollutants
3	Normal rain water is:	weakly acidic strongly acidic weakly basic strongly basic
4	Which gas like a glass wall of g green house:	CO O2 CO2 N2
5	A strange bitter smell noticed near photocopiers is of:	SO2 H2S O2 O3
6	ozone depletion (i.e O3--------------> O2 + O) occurs in:	lower stratosphere middle stratosphere upper stratosphere troposphere
7	Almost all aircrafts fly in:	troposphere mesosphere stratosphere themosphere
8	The major constituents of troposphere are:	carbon dioxide and argon nitrogen and oxygen argon and oxygen carbon dioxide and oxygen
9	Mesophere extend forms 50 km to:	50 km 12 km 60 km 85 km
10	In the troposphere (lowest layer), the temperature decreases form 17°C to;	-58°C -93°C -61°C -49°C
11	How much amount of sunlight reaches up to earth and absorbed:	26% 32% 50% 18%
12	Percentage of nitrogen in atmosphere is:	20.94% 78.09% 0.93% 0.03%