Advertisements
Advertisements
प्रश्न
Write the missing reactants and products and balance the equations.
NaOH + ............... `→` NaCI + ...................
Advertisements
उत्तर
NaOH + HCI `→` NaCI + `H_2O`
APPEARS IN
संबंधित प्रश्न
Define catalyst.
Complete and balance the following chemical equations:
`"H"_2"S"` + `"CI"_2` `→`
Give reason .
A person suffering from acidity is advised to take an antacid.
What are homogenous reactions ?
Balance the following equation :
Fe + H2O → Fe3O4 + H2
State what you would observe when the following substance is heated in a glass test tube Copper (II) carbonate Red lead .
Write the chemical reaction where the following changes are observed.
Precipitate is formed
Give reason for the following:
Silver nitrate solution is kept in coloured bottles.
Give an example of the following chemical changes.
A reaction involving
(i) Change of state
(ii) formation of precipitate
Complete and balance the following reaction:
NaCl(aq) + AgNO3(aq) →
State the original colour of the following substance and colour of residue obtained after heating.
Lead nitrate
Give a word equation for the following reaction.
An exothermic reaction where both the reactants are gases, one of which is oxygen.
Complete the table given below.
| Heat on sodium chloride | Colour imparted to flame during flame test |
Name the solid residual product formed reaction and state its colour during – thermal decomposition of the following substance.
Ammonium dichromate.
Which of the following is not an “element + element → compound” type reaction?
Analogy:
H2O: Water:: NaCl: ______.
A chemical change may involve –
Classify the following processes into physical or chemical changes:
- Beating of aluminium metal to make aluminium foil.
- Digestion of food.
- Cutting of a log of wood into pieces.
- Burning of crackers.
Which is used as a catalyst during the process of hydrogenation of oils?
Acid rain is a result of ______.
