The Atmosphere

Q. Identify the labelled parts of the atmosphere in the given diagram.

1. (i) Thermosphere (ii) Ionosphere (iii) Troposphere (iv) Karman line
2. (i) Troposphere (ii) Ozone layer (iii) Mesosphere (iv) Thermosphere
3. (i) Thermosphere (ii) Mesosphere (iii) Troposphere (iv) Tropopause
4. (i) Karman line (ii) Mesosphere (iii) Troposphere (iv) Thermosphere

Q. Identify the gases depicted with their percentage composition in the given pie chart.

1. (i) Nitrogen, (ii) oxygen, (iii) carbon dioxide, (iv) argon, (v) water vapour
2. (i) Oxygen (ii) nitrogen (iii) water vapour (iv) argon (v) carbon dioxide
3. (i) Nitrogen (ii) oxygen (iii) argon (iv) carbon dioxide (v) water vapour
4. (i) Water vapour (ii) oxygen (iii) nitrogen (iv) carbon dioxide (v) argon

Q. The availability of the in the atmosphere helped life flourish on the early earth.

1. carbon dioxide
2. methane
3. nitrogen
4. oxygen

Q. Sort the layers of the atmosphere with the bottom-most option being the layer farthest to earth.

1. Troposphere
2. Thermosphere
3. Mesosphere
4. Stratosphere
5. Exosphere

Q. The ozone layer is present in the part of the atmosphere.

1. troposphere
2. mesosphere
3. stratosphere
4. exosphere

Q. Identify the correct decreasing order of the following with respect to altitude from atmosphere.
I) Troposphere
II) Mesosphere
III) Thermosphere

1. $II>III>I$
2. $III>II>I$
3. $I>II>III$
4. $I>III>II$

Q. What is the correct sequence of atmosphere layers starting from earth ?

1. Stratosphere troposphere , mesosphere , thermosphere
2. troposphere, Stratosphere , mesosphere , thermosphere
3. mesosphere , t troposphere , Stratosphere , thermosphere
4. Thermosphere , mesosphere Stratosphere troposphere

Q. Air contains $79$% $N_2$ and $21$% $O_2$ by volume. If the barometric pressure is $750mm$ $Hg$ the partial pressure of oxygen is:
($d{N}_2=1.25,d{O}_2=1.42g/m$)

1. $175.5mm$ of $Hg$
2. $157.5mm$ of $Hg$
3. $315.0mm$ of $Hg$
4. None

Q. The availability of the in the atmosphere helped life flourish on the early earth.

1. carbon dioxide
2. methane
3. nitrogen
4. oxygen

Q. The ozone layer is present in the part of the atmosphere.

1. troposphere
2. mesosphere
3. stratosphere
4. exosphere