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प्रश्न
Complete the table given below.
| Heat on Zinc nitrate | Colour of residue |
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उत्तर
| Heat on Zinc nitrate | Colour of residue | yellow - hot, white - cold (ZnO Residue zinc oxide) |
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संबंधित प्रश्न
Name three biochemical catalysts found in the human body.
MULTIPLE CHOICE QUESTIONS
Tick the most appropriate answer.
Reduction reaction is the exact opposite of
- displacement reaction
- decomposition reaction
- oxidation reaction
- none of these
What are homogenous reactions ?
Fill in the blank:
The substances formed as a result of a chemical reaction are called _______
Choose the correct option from the bracket and explain the statement giving reason.
(Oxidation, displacement, electrolysis, reduction, zinc, copper, double displacement, decomposition)
The conversion of ferrous sulphate to ferric sulphate is ______ reaction.
State the main characteristics of chemical reactions. Give at least one example in each case.
Complete the following table and write your observations.
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Hydrogen sulphide |
Ammonia |
Sulphur dioxide |
Hydrogen chloride |
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Shake the gas with red litmus solution |
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Shake the gas with blue litmus solution |
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Apply a burning splint to a gas |
Circle the odd one out. Give reason for your choice
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How can we prevent rusting?
