Chemistry Class 10th
301. The density of atmosphere is:
A) 0.0013q/cm3
B) 0.2344 q/cm3
C) 0.0045 q/cm3
D) None of the above
302. The Percentage of N2 in the atmosphere is:
A) 78.1
B) 20.9
C) 32
D)57
303. The Percentage of Oxygen in the atmosphere is:
A) 78.1
B) 20.9
C) 32
D)57
304. The Atmosphere extends upto _____ km.
A) 150
B) 235
C) 450
D) 500
305. The pressure is 1atm at ______.
A) Mountains
B) Plains
C) Sea level
D) Deserts
306. The Atmosphere is divided into _____parts
A) None
B) Two
C) Three
D) Four
307. The first layer of the atmosphere is:
A) Troposphere
B) Stratosphere
C) Mesosphere
D) Thermosphere
308. Tropo means:
A) Turning
B) Tropical
C) Transparent
D) Thermal
309. The Average height of troposphere is :
A) 5km
B) 7 km
C) 11Km
D) 15 km
310. All weather phenomena take place in:
A) Troposphere
B) Stratosphere
C) Mesosphere
D) Thermosphere
311. The temperature drops by _____ with every 1 km increase in altitude.
A) 2 C
B) 4 C
C) 6.5 C
D) None of the above
312. The second layer is of atmosphere is:
A) Troposphere
B) Stratosphere
C) Mesosphere
D) Thermosphere
313. The Height of Stratosphere goes from 11 km to _____.
A) 20km
B) 25km
C) 50 Km
D) 66 Km
314. Ozone is the major component of :
A) Troposphere
B) Stratosphere
C) Mesosphere
D) Thermosphere
315. The Ozonesphere is located at height of:
A) 20 km
B) 30 km
C) 35 km
D) 49 Km
316. Ozone absorbs:
A) Sunlight
B) Heat
C) Infrared Light
D) UV light
317. Ozone layer gets damaged by:
A) Soot
B) CFCs
C) Tar
D) SOX
318. The Mesosphere is present at the height of:
A) 0-11km
B) 11-50 km
C) 50-85 km
D) 85-200 km
319. The Temperature range of Mesosphere is:
A) 15 to -56
B) -56 to -2
C) -2 to -92
D) -92 to 1200
320. The height of Thermosphere is:
A) 0-11km
B) 11-50km
C) 50-85km
D) 85-500 km