Advertisements
Advertisements
प्रश्न
How would you show that setting of curd is a chemical change?
Advertisements
उत्तर १
Once the curd is formed, milk cannot be re-obtained from it. Also, both milk and curd have different properties. Since these are the properties of a chemical change, the setting of curd is a chemical change.
उत्तर २
- When curd sets, its chemical composition changes.
- Curd is obtained as a new substance.
- Curd cannot be obtained again in its original state (milk).
- The chemical properties change.
- Its taste becomes sour.
Thus, the setting of curd is a chemical change.
APPEARS IN
संबंधित प्रश्न
Give one example that illustrates the following characteristics of a chemical reaction:
Change in state
FILL IN THE BLANK
In a double decomposition precipitation reaction both the reactants must be ............ soluble.
What are biocatalysts ?
Copper carbonate when heated, it turns :
Explain by writing a word equation.
Hard water gets softened on mixing with a solution of washing soda.
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.
Give an example of a reaction where the following are involved
Catalyst
Name affects the acidified K2Cr2O7 paper and also turns lime water dirty milky.
Give a word equation for the following reaction.
Two solids which combine on heating, to give a liquid.
Higher order Thinking question
Peeled and unpeeled banana does not look the same. Does that mean peeling banana is a chemical change?
