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Question
Complete and balance the following chemical equation:
\[\ce{Pb(NO3)2 ->[Heat]}\]
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Solution
\[\ce{Pb(NO3)2 ->[heat] 2PbO + 4NO2 + O2\uparrow}\]
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RELATED QUESTIONS
MULTIPLE CHOICE QUESTIONS
Tick the most appropriate answer
Which of the following is a reducing agent?
- oxygen
- chlorine
- hydrogen
- none of these
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 |
Fill in the blank:
The substances which undergo chemical change are called _______
State what you would observe when the following substance is heated in a glass test tube Copper (II) carbonate Red lead .
Explain the following reaction with one suitable example of Decomposition reaction
What is the reaction called when oxidation and reduction take place simultaneously? Explain with one example.
When electric current is passed through acidulated water ______ of water takes place.
Give an example of a reaction where the following are involved
Pressure
State the type of reactions for the following represent and balance the ones that are not balanced.
Cl2 + 2KBr → 2KCl + Br2
State the original colour of the following substance and colour of residue obtained after heating.
Lead nitrate
Select the correct answer for the following options:
The black residue obtained on heating copper carbonate.
State the following reaction represent oxidation or reduction.
\[\ce{Fe++->Fe+++}\]
What kind of a change is associated with decaying of a plants?
Mention the various conditions required for a chemical reaction to occur.
Write some materials prepared by chemical changes.
If you leave a piece of iron in the open for a few days, it acquires a film of brownish substance, called rust.
Can you change rust back into iron by some simple method?
Vanaspati is obtained from vegetable oils by the addition of ______ to the oils.
Galvanization is a process in which ______ is coated as a layer of iron.
Iron and rust are the same substances.
