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Byju's Answer
Standard VIII
Chemistry
Evolution of Gas
Upward arrow ...
Question
Upward arrow in a chemical equation represents _________.
A
formation of a precipitate
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B
evolution of a gas
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C
heat absorbed
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D
heat released
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Q.
Upward arrow in a chemical equation represents _________.
Q.
Identify and correct the mistakes in the following sentences: While balancing a chemical equation,
a) change the formulae wherever necessary.
b) use the upward arrow mark
(
↑
)
if the product formed is a precipitate.
Q.
The arrow pointing downwards along with a product represents a gaseous product, whereas the arrow pointing upwards represents the precipitate in a reaction.
Q.
The arrow pointing downwards
(
↓
)
along with a product represents a gaseous product, whereas the arrow pointing upwards
(
↑
)
represents the precipitate in a reaction.
Q.
An arrow pointing downwards in a chemical reaction shows
(a) evolution of gas
(b) formation of precipitae
(c) oxidation
(d) displacement
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