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प्रश्न
Complete the table given below.
| Addition of dil. H2SO4 to zinc | Test for gas evolved |
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उत्तर
| Addition of dil. H2SO4 to zinc | Test for gas evolved | The gas [H2] evolved burns with 'pop' sound and burns with pale blue flame |
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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
What are homogenous reactions ?
Give an example of a reaction where the following are involved:
Close contact
Distinguish by dilute sulphuric acid.
Copper and magnesium?
Give a balanced equation for a reaction involving the evolution of gas on the addition of dilute acid to sodium sulphite.
Select the correct answer from the options given below:
State the gaseous product formed, when
An active metal reacts with dilute sulphuric acid.
Can a nickel spatula be used to stir copper sulphate solution? Justify your answer.
A bag of cement lying in the open gets wet due to rain during the night. The next day the sun shines brightly. Do you think the changes, which have occurred in the cement, could be reversed?
Melting of wax is a change where a solid changes to liquid state. Give one more such change which you observe in your surroundings
Give an example where heat, light, and sound are produced during a chemical change.
