Advertisements
Advertisements
प्रश्न
How will you obtain Nitrogen dioxide from lead nitrate.
Also give balanced equations for the reactions
Advertisements
उत्तर
Lead nitrate when heated nitrogen oxide is obtained
\[\ce{2Pb(NO3)2 ->[heat] 2PbO(s) + 4NO2 + O2 (g)}\]
APPEARS IN
संबंधित प्रश्न
Give one example of a decomposition reaction which is carried out by applying heat.
What type of reaction is represented by the following equation?
\[\ce{NH4Cl -> NH3 + HCl}\]
State the change in colour observed in the following case, mentioning the reason:
Silver chloride is exposed to sunlight.
Two metals X and Y form the salts XSO4 and Y2SO4, respectively. The solution of salt XSO4 is blue in colour whereas that of Y2SO4 is colourless. When barium chloride solution is added to XSO4 solution, then a white precipitate Z is formed along with a salt which turns the solution green. And when barium chloride solution is added to Y2SO4 solution, then the same white precipitate Z is formed along with colourless common salt solution.
- What could the metals X and Y be?
- Write the name and formula of salt XSO4.
- Write the name and formula of salt Y2SO4.
- What is the name and formula of white precipitate Z?
- Write the name and formula of the salt which turns the solution green in the first case.
MULTIPLE CHOICE QUESTIONS
Tick the most appropriate answer.
Thermal decomposition of a substance is brought about with the help of
- reactants
- water
- wind
- heat
What does one mean by endothermic reaction? Give example.
Identify the type of following reaction :
Assertion: Decomposition of vegetable matter into compost is an endothermic reaction.
Reason: Decomposition reaction involves breakdown of a single reactant into simpler products.
Complete the following reaction:
\[\ce{C_12H_22O11->[Heat]}\] ______ + ______.
Write the molecular formula of calcium carbonate.
