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प्रश्न
Complete the table given below.
| Heat on copper carbonate | Test for gas evolved |
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उत्तर
| Heat on copper carbonate | Test for gas evolved | Colourless (CO2 Carbon dioxide) |
APPEARS IN
संबंधित प्रश्न
MULTIPLE CHOICE QUESTIONS
Tick the most appropriate answer.
Compounds, which in their molten state allow an electric current to pass through them are called
- electrolytes
- non-electrolytes
- non-conductors
- none of these
Copper carbonate when heated, it turns :
Define the following term:
Precipitate
Give reason for the following:
Molybdenum is used in the manufacture of ammonia.
Give a chemical test to distinguish between the following gases.
SO2 and Cl2
State the following reaction represent oxidation or reduction.
\[\ce{Fe++->Fe+++}\]
Name the solid residual product formed reaction and state its colour during – thermal decomposition of the following substance.
Zinc carbonate.
Explain the following statement: Digestion is a chemical change.
______ change results in the change of the substance.
Classify each of the following, as a physical or a chemical change. Give reasons.
(a) Drying of a shirt in the sun.
(b) Rising of hot air over a radiator.
(c) Burning of kerosene in a lantern.
(d) Change the colour of black tea by adding lemon juice to it.
(e) Churning of milk cream to get butter.
