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SSC MTS 5 Aug 2019 Shift 3 Paper
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© examsnet.com
Question : 83
Total: 100
Which gas is produced when metal reacts with dilute acids?
Oxygen
Carbon Dioxide
Nitrogen
Hydrogen
Validate
Solution:
Option 4 is correct, i.e. Hydrogen.
An acid/base reacts with Metal:
When an acid reacts with metal then we get salt and
hydrogen gas(
H
2
)
as a by-product.
Acid + Metal → Salt +
Hydrogen gas
The reaction that takes place can be written as follows:
2NaOH+Zn→
Na
2
ZnO
2
(salt)+
H
2
Note:
When an acid reacts with metal oxide then we get
water(
H
2
O
)
as a by-product.
Metal oxide + Acid → Salt +
Water(
H
2
O
).
Neutralization
is a chemical reaction in which an acid and a base react with each other.
For Example : HCl + NaOH→ NaCl +
H
2
O
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