Based on the diagram above which change can be observed when moving from the troposphere into the stratosphere?
120
100
Thermosphere
80
Mesosphere
Altitude (km)
60
40
Stratosphere
ozone layer
20
Troposphere
0
80
0
40
40
Temperature C)
Air pressure decreases
Air particles increase
Temperature increases

Answer is in the photo. I can't attach it here, but I uploaded it to a file hosting. link below! Good Luck!

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it would be b. 6co2 + 6h2o --> c6h12o6 + 6o2

hydrocarbons are organic compounds that contain only hydrogens and carbons. they can be saturated (those which contain only carbon-carbon single bonds) or unsaturated (those which contain carbon-carbon double or triple bonds) in nature. hydrocarbons can undergo several reactions like substitution, elimination etc.  

on substituting one or more hydrogen atoms in hydrocarbon it results in the formation of haloalkane. as the halogen atoms are large compared to the carbon and hydrogen atoms, due to which the molecular weight increases and the bond become polar because of presence electronegative halogen atom and results in the increase in boiling point of the haloalkane.

thus, the correct option is (b) that is the boiling point of the new compound increases on substituting a hydrogen atom with a halogen in a hydrocarbon.