EASY
7th ICSE
IMPORTANT
Earn 100

What happens when the wax in the form of a wax candle is burned?

Important Questions on Language of Chemistry

MEDIUM
7th ICSE
IMPORTANT
Lakhmir Singh's Science Chemistry>Chapter 5 - Language of Chemistry>EXERCISES>Q 7

Observe the following equations:

H2+O→H2O

2N+3H2→2NH3

Are the above equations are correct? Explain

MEDIUM
7th ICSE
IMPORTANT
Lakhmir Singh's Science Chemistry>Chapter 5 - Language of Chemistry>EXERCISES>Q 8
Why does the reaction between quicklime and water to form the slaked lime makes the container hot?
MEDIUM
7th ICSE
IMPORTANT
Lakhmir Singh's Science Chemistry>Chapter 5 - Language of Chemistry>EXERCISES>Q 9
Why does effervescence are observed in the reaction of sodium carbonate with dilute hydrogen chloride?
MEDIUM
7th ICSE
IMPORTANT
Lakhmir Singh's Science Chemistry>Chapter 5 - Language of Chemistry>EXERCISES>Q 10
The reaction of ammonium chloride with sodium hydroxide gives a strong pungent smell. What is the reason of this pungent smell in the reaction?
MEDIUM
7th ICSE
IMPORTANT
Lakhmir Singh's Science Chemistry>Chapter 5 - Language of Chemistry>EXERCISES>Q 1
State one characteristic of the chemical reaction which takes place when dilute sulphuric acid is added to barium chloride solution.
MEDIUM
7th ICSE
IMPORTANT
Lakhmir Singh's Science Chemistry>Chapter 5 - Language of Chemistry>EXERCISES>Q 1
State one characteristic of the chemical reaction which takes place when lemon juice is added gradually to potassium permanganate solution.
EASY
7th ICSE
IMPORTANT
Lakhmir Singh's Science Chemistry>Chapter 5 - Language of Chemistry>EXERCISES>Q 1
State one characteristic of the chemical reaction which takes place when dilute sulphuric acid is added to barium chloride solution.
EASY
7th ICSE
IMPORTANT
Lakhmir Singh's Science Chemistry>Chapter 5 - Language of Chemistry>EXERCISES>Q 1
State one characteristic of the chemical reaction which takes place when quicklime is treated with water.