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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) |
APPEARS IN
संबंधित प्रश्न
Write the missing reactants and products and balance the equations.
\[\ce{KClO3 ->[heat]}\] ___________+ ____________
MULTIPLE CHOICE QUESTIONS
Tick the most appropriate answer.
Which one of the following alters the rate of the chemical reaction without itself undergoing any change?
- temperature and Pressure
- concentration of reactants
- presence of catalyst
- none of these
FILL IN THE BLANK
In a ............ change, new substances are formed.
Fill in the blank.
Melting of ice is a _______ change.
Write the chemical reaction where the following changes are observed.
Gas is evolved
Complete and balance the following reaction:
Pb(NO3)2 + KI →
Give a chemical test to distinguish between the following gases.
NH3 and HCl
State whether the following reaction is oxidation or reduction.
\[\ce{Na->Na+}\]
Name the solid residual product formed reaction and state its colour during – thermal decomposition of the following substance.
Lead nitrate.
Chemical changes are important in our day-to-day life. Give examples.
