FRANK Solutions for Class 10 Chemistry Chapter 11 - B - Alkanes

Chapter 11B - Alkanes Exercise 274

Question 1

Solution 1

Question 2

Solution 2

Question 3

Solution 3

Question 4

Solution 4

Question 5

Solution 5

Question 6

Solution 6

Question 7

Solution 7

Question 8

Solution 8

Question 9

Solution 9

Question 10

Solution 10

Question 11

What is greenhouse gas? What is the contribution of methane in causing greenhouse effect?

Solution 11

Some components of the atmosphere such as water vapour, carbon dioxide, nitrous oxide and methane absorb heat energy reflected by the earth's surface and hence increase the average atmospheric temperature. These gases are called greenhouse gases.

Methane contributes to the greenhouse effect to an extent of 19%, and the concentration of methane has been increasing at the rate of 1.5% per year.

Question 12

Solution 12

Question 13

Solution 13