Advertisements
Advertisements
प्रश्न
Give a word equation for the following reaction.
A salt which reacts with ammonium hydroxide to give a reddish brown precipitate.
Advertisements
उत्तर
Ferric chloride + Ammonium hydroxide → Ferric hydroxide (reddish brown precipitate) + Ammonium chloride
\[\ce{FeCl3 + 3NH4OH -> Fe(OH)3↓ + 3NH4Cl}\]
APPEARS IN
संबंधित प्रश्न
Give reason .
A person suffering from acidity is advised to take an antacid.
FILL IN THE BLANK
........... electrolytes dissociate completely in aqueous state and allow large amount of electricity to flow through it.
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 |
Define electrolysis.
Fill in the blank.
Melting of ice is a _______ change.
State what you would observe when the following substance is heated in a glass test tube red lead.
Complete the statement by filling the gap using an appropriate term from the terms given in the bracket.
(slow, coloured, arrow, fast, smell, milky, physical, product, chemical, reactant, covalent, ionic, octet, duplet, exchange, sharing, equality sign)
An ______ is drawn in between the reactants and products while writing the equation for a chemical reaction.
Complete and balance the following reaction:
\[\ce{Pb(NO3)2 ->[\Delta]}\]
Give a chemical test to distinguish between the following gases.
NH3 and HCl
Give a chemical test to distinguish between the following gases.
NH3 and SO2
What do you observe when dilute sulphuric acid is added to the following:
Sodium Sulphide
Give a balanced equation for a reaction involving the evolution of gas on the addition of dilute acid to calcium carbonate.
True or False. If false, give the correct answer.
Taking a glass of water and freezing it by placing it in the freezer is a chemical change.
Photosynthesis is a chemical reaction that takes place in the presence of ______.
Mention the various conditions required for a chemical reaction to occur.
______ occurs in the absence of air and in the presence of micro-organisms such as yeast.
When carbon dioxide is passed through lime water ______.
______ is the chemical name of rust.
Collect information about the types of fuels used for cooking in your area. Discuss with your teachers/parents/others which fuels are less polluting and why.
