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प्रश्न
Complete the table given below.
| Addition of dil. H2SO4 to KHCO3 | Name of residue obtained |
उत्तर
| Addition of dil. H2SO4 to KHCO3 | Name of residue obtained | K2SO4 Residue is potassium sulphate |
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संबंधित प्रश्न
When carbon dioxide is passed through lime water, it turns milky due to the formation of ______.
MULTIPLE CHOICE QUESTIONS
Tick the most appropriate answer.
Miscible liquids having slightly different boiling points can be separated by the
- evaporation
- distillation
- fractional distillation
- sedimentation
FILL IN THE BLANK
........... electrolytes dissociate completely in aqueous state and allow large amount of electricity to flow through it.
How is a strong electrolyte different from a weak electrolyte?
Fill in the blank
A change in which the substance can be brought back to its original state is called a _______ change.
State the conditions necessary for a chemical change or reaction.
Define the following terms
Precipitate
What do you observe? When
Water is added to the quick lime.
Name the gases which Turn moist red litmus blue.
Name: Gas with rotten egg smell.
Give balanced equation for the following conversion affected by heat alone on the substance:
Copper nitrate to nitrogen dioxide
Complete the table given below.
| Heat on ammonium dichromate | Name of neutral gas evolved |
Complete the table given below.
| Heat on sodium chloride | Colour imparted to flame during flame test |
Differentiate between the following:
Neutralization reaction and a precipitation reaction.
What kind of a change is associated with decaying of a plants?
What happens when cane sugar is strongly heated? Mention any two changes in it.
Galvanization is a process in which ______ is coated as a layer of iron.
The chemical formula of rust is ______.
______ is a chemical substance is used in whitewashing.
