• 072920 77839
  • info@smartachievers.in
Menu
Back
  • JEE ADVANCE
  • JEE MAIN
  • NEET
  • BITSAT
  • CBSE BOARD
  • UP BOARD
  • CUET
JEE ADVANCE
  • CLASS XI - XII
  • CRASH COURSE
CRASH COURSE
JEE MAIN
  • CLASS XI - XII
  • CRASH COURSE
CRASH COURSE
NEET
  • CLASS XI - XII
  • CRASH COURSE
BITSAT
  • CLASS XI - XII
CBSE BOARD
  • CLASS IX
  • CLASS X
  • CLASS XI
  • CLASS XII
  • CLASS VI
  • CLASS VII
  • CLASS VIII
UP BOARD
  • CLASS IX
  • CLASS X
  • CLASS XI
  • CLASS XII
CUET
  • CRASH COURSE
Courses


Solution


Q.

Read the passage carefully and answer the following questions from (i) to (v):

 

Chemistry in Automobiles:
For an internal combustion engine to move a vehicle down the road, it must convert the energy stored in the fuel into mechanical energy to drive the wheels. In your car, the distributor and battery provide this starting energy by creating an electrical "spark", which helps in combustion of fuels like gasoline. Below is the reaction depicting complete combustion of gasoline in full supply of air.

 

2 C subscript 8 H subscript 18 left parenthesis l right parenthesis space plus space 25 O subscript 2 left parenthesis g right parenthesis space rightwards arrow space 16 X apostrophe

 

(iii) On the basis of evolution/absorption of energy, which of the following processes are similar to combustion of fuel
I. Photosynthesis in plants
II. Respiration in the human body
III. Decomposition of vegetable matter
IV. Decomposition of ferrous sulphate
1  II and III  
2 I and II  
3 III and IV  
4  II and I  

Ans.

(1)