Question

2. The gas we use in the kitchen is called liquefied petroleum gas (LPG). In the
cylinder it exists as a liquid. When it comes out from the cylinder it becomes a
gas (Change-A) then it burns (Change-B). The following statements pertain to
these changes. Choose the correct one. with proper season -
(i) Process - A is a chemical change.
(ii) Process - B is a chemical change.
(iii) Both processes A and B are chemical changes.
(iv) None of these processes is a chemical change.
Anaerobic bacteria digest animal waste and produce biogas (Change -A). The
biogas is then burnt as fuel (Change -B). The following statements pertain to
these changes. Choose the correct one. (NCERT) Loith pepper veason 7
(1) Process - A is a chemical change.
(ii) Process -B is a chemical change,
(iii) Both processes A and B are chemical changes.
(iv) None of these processes is a chemical change.

Answer 1

¹.ka answer hoga b

2.kà answer hai à

Answer 2

Explanation:

In the first question the answer is

Change B is a chemical change

Second question answer is

Change B is a chemical change