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Chemistry CBSE Live product
Class 10 (2025-26)
Acids, bases and salts
Annual Revision IV - Acids, bases and salts
5.
Chemical reactions of acids and bases
Question:
2
m.
Answer the following questions briefly:
On adding a strong acid Y to reddish brown metal X, no bubbles are formed. Identify X, Y, and explain whether the product Z is formed or not.
i.
X
is
magnesium
aluminium
zinc
copper
.
ii.
Y
is
hydrochloric acid
citric acid
nitric acid
acetic acid
.
iii.
Z
is
formed
not formed
.
iv.
Explanation:
Copper reacts vigorously with acids to produce hydrogen
Copper is less reactive than hydrogen and cannot displace it from the acid
Copper reacts slowly with all acids
Copper forms a soluble salt in all acids
.
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