Fill up the blank: CaC₂ + N₂ → __________ + C
WBBSE
Class X
Physical Science
Inorganic Chemistry
01 Mark
2025
CaCN₂ (Calcium cyanamide)
Related Questions
More WBBSE Easy level questions
1/12
Q.
Which metal is used as catalyst in Haber’s process for preparation of ammonia?
A.
Iron (Fe)
Q.
Write the name and formula of an organic fertiliser produced from ammonia.
A.
Organic Fertilizer produced from ammonia: Name: Urea Formula: CO(NH2)2 OR Black Precipitate...
Q.
The gas which is identified by using Nessler’s reagent is (a) NO2 (b) H₂S (c)...
A.
(d) NH₃ Explanation Nessler's reagent is used to detect ammonia (NH₃) gas....
Q.
The substance used for drying ammonia gas is: (a) CaCl₂ (b) CaO (c) H₂SO₄ (d) P₂O₅
A.
(b) CaO Explanation Quick lime (CaO) is used for drying ammonia gas...
Q.
What will be the colour of the solution formed when excess aqueous ammonia is added...
A.
(d) Deep blue Explanation When excess aqueous ammonia (NH₄OH) is added to...
Q.
Write the formula of the black precipitate formed when H₂S gas is passed through an...
A.
PbS (Lead sulphide) Explanation When H₂S gas is passed through an aqueous...
Q.
Fill in the blank: 2NH₃ + CO₂ → ______ + H₂O
A.
NH₂CONH₂ (Urea)
Q.
Write the names of the chemicals used and the balanced chemical equation in the industrial...
A.
Chemicals Used: Ammonia (NH3) Carbon dioxide (CO2) Balanced Chemical Equation: 2NH3 +...
Q.
Why is concentrated H2SO4 not used to dry ammonia gas ?
A.
Concentrated H2SO4 is not used to dry ammonia gas because it reacts...
Q.
What colour is produced when H₂S gas is passed through a solution of potassium dichromate...
A.
(c) Green Explanation Hydrogen sulphide (H₂S) acts as a reducing agent. When...
Q.
For the preparation of N2 gas in the laboratory, the mixed aqueous solution of which...
A.
a. NaNO₂ and NH₄Cl Explanation: In the laboratory, nitrogen gas is prepared...
Q.
Write the name of a gas that can be prepared using Kipp’s apparatus. Write the...
A.
Hydrogen sulphide (H₂S) can be prepared using Kipp's apparatus. It is prepared...