Name: Gas with Rotten Egg Smell. - Chemistry

Name: Gas with rotten egg smell.

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एक शब्द/वाक्यांश उत्तर

Hydrogen sulphide.
H₂S

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अध्याय 9: Practical Work - Exercise 9 (A) [पृष्ठ १४२]

अध्याय 9 Practical Work
Exercise 9 (A) | Q 6.5 | पृष्ठ १४२

MATCH THE COLUMNS

1 . `H_2` + `CI_2` `→` 2HCI	a. displacement reaction
2. `2FeCI_3`+ `H_2` `→` `2FeCI_2` +2HCI`	b. addition of an electronegative redical
3. Fe + `CuSO_4` `→``FeSO_4` +Cu`	c. removal of an electronegative redical
4. `2H_2O` +`4NO_2`+`O_2` `→` `4HNO_3`	d.reduction by adding hydrogen
5. 3Fe +`3CI_2` `→` `2FeCI_3`	e.electrolysis of water
6. `FeCI_3`+ 3NaOH `→``Fe(OH)_3``↓`+NaCI	F.double decomposition,precipitation reaction
7.`2H_2O` `→` `2H_2``↑`+`O_2`	e. combination or synthesis reaction

Balancing a chemical equation is based on

Name the gases which turn moist red litmus blue.

Mention the various conditions required for a chemical reaction to occur.

Chemists identify gypsum as a natural indicator.

Iron benches kept in lawns and gardens get____________. It is a _________ change because a new _________ is formed.

Write a note on the catalyst.

Write the characteristics of chemical change.

Both CO₂ and H₂ gases are ______.

______ is a chemical substance is used in whitewashing.