CBSE Class 10 Chemistry Chemical Reactions
Q.
Breaking of glass is
a. Reversible change
b. Irreversible change
c. Physical change
d. Chemical change
Q.
Which of the following does not show both physical and chemical changes?
Q.
Which does not occur when we add zinc to dilute HCl?
a) Absorption of heat
b) Evolution of heat
c) Evolution of hydrogen
d) Change in colour
Q.
On covering the mouth with the hands, the hands feel warm because respiration is
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