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प्रश्न
Give a chemical test to distinguish between the following gases.
NH3 and SO2
उत्तर
| Ammonia (NH3) | Sulphur dioxide (SO2) | |
| Litmus test | Moist red litmus blue. | Moist blue litmus red. |
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संबंधित प्रश्न
State whether the following statement is true or false. In case a statement is false, write the corrected statement.
Iron and rust are the same substances.
When carbon dioxide is passed through lime water, it turns milky due to the formation of ______.
FILL IN THE BLANK
In a ............ change, new substances are formed.
FILL IN THE BLANK
Distillation is a method of obtaining pure ............. from a solution.
Name the type of chemical reaction shown by the following equation:
Fe + CuSO4 → FeSO4 + Cu
Name the type of chemical reaction shown by the following equation:
NaOH + HCl → NaCl + H2O
Choose the correct option from the bracket and explain the statement giving reason.
(Oxidation, displacement, electrolysis, reduction, zinc, copper, double displacement, decomposition)
To prevent rusting, a layer of ______ metal is applied on iron sheets.
Define Photochemical reaction
Give an example
Name: Two carbonates do not produce carbon dioxide on heating.
What is a chemical reaction?
Complete the table given below.
| Heat on iodine crystals | Colour of vapours evolved |
Name the solid residual product formed reaction and state its colour during – thermal decomposition of the following substance.
Copper nitrate.
Higher order Thinking question
Peeled and unpeeled banana does not look the same. Does that mean peeling banana is a chemical change?
Limestone contains ______ mainly.
Mention the various conditions required for a chemical reaction to occur.
A reaction between an acid and a base is called ______.
Silver articles turning black: ______:: Boiling of H2O: physical change ______.
When magnesium is burnt in the air, a new substance is formed which is ______.
Write the effects of chemical reactions.
Define the following term:
Chemical change
