Question

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10. Answer the following questions
1) The gas we use in kitchen is in the form of
liquid in the cylinder. When it comes out
from the cylinder it becomes a gas (step-
I), then it burns (step - II). Choose the
correct statement from the following.
a. Only step-I is a chemical change.
b. Only step-II is a chemical change.
c. Both steps - I & II are chemical changes.
d. Both steps - I & II are physical changes.
II) Bacteria digest animal waste and produce
biogas (step-1). The Biogas is then burnt
as fuel (step - II). Choose the correct
statement from the following
a. Only step-I is a chemical change.
b. Only step-II is a chemical change.
c. Both steps - I & II are chemical changes.
d. Both steps - I & II are physical changes.
III) A piece of paper was cut into four pieces.
What type of change occurred in the
property of the paper?
Physical change b. Chemical change​

Answer 1

Answer:

I. b

II. c

III. Physical Change

Answer 2

1. Answer - b. Only step-II is a chemical change.

2. Answer - b. Only step-II is a chemical change.