Tag: origin of universe

Questions Related to origin of universe

Ozone makes the stratosphere :

  1. Cooler by $17^o C $

  2. Warmer by $17^o C $

  3. Warmer by $53^o C $

  4. Cooler by $50^o C $


Correct Option: C

Earth is differentiated into three layers. The outer layer is :

  1. Lithosphere

  2. Asthenosphere

  3. Mantle

  4. Crust


Correct Option: D

Primary atmosphere was :

  1. Reducing

  2. Oxidising

  3. Rich in ozone

  4. Rich in $NO _2$


Correct Option: A

Which one disappeared from earlier atmosphere during its conversion to prime atmosphere?

  1. Atomic state of gases

  2. Oxygen

  3. Ammonia

  4. Both A and B


Correct Option: D

Which organisms changed earth's atmosphere from reducing to oxidising?

  1. Chemoautotrophs

  2. Bacterial photoautotrophs

  3. Blue-green algae/ oxygenic photoautotrophs

  4. Chemoheterotrophs


Correct Option: C

Earliest hot atmosphere of earth contained :

  1. Molecules of hydrogen, Carbon and NItrogen

  2. Atoms of Hydrogen, Carbon, Oxygen and Nitrogen

  3. Atoms of Hydrogen, Sulphur and Carbon

  4. Molecules of Hydrogen, Methane and Ammonia


Correct Option: B

Primary atmosphere contained :

  1. $ CO _2, NH _3$ and $ H _2 O $

  2. $ CH _4 , NH _3, H _2 $ and $ H _2 O $

  3. $ CO _2, N _2 H _2 $ and $ H _2 O $

  4. $ CH _4 , CO _2 , N _2 , O _2 $ and $ H _2 O $


Correct Option: B

In mesosphere, the temperature :

  1. Rises from $-2^o $ to $ 15^o C $

  2. Rises from $-2^o $ to $ 92^o C $

  3. Decreases from $-2^o $ to $ -15^o C $

  4. Decreases from $-2^o $ to $ -92^o C $


Correct Option: D