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प्रश्न
Which of the following is/are true when milk changes into curd?
- Its state is changed from liquid to semi solid.
- It changes colour.
- It changes taste.
- The change cannot be reversed.
Choose the correct option from below:
विकल्प
(i) and (ii) are correct
(ii) and (iii) are correct
(i), (iii) and (iv) are correct
(i) to (iv) are correct
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उत्तर
(i), (iii) and (iv) are correct
Explanation:
When milk changes to curd it becomes semi solid. The taste of milk changes and the change is irreversible but there is no change in colour. It remains white.
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संबंधित प्रश्न
How do the following help in bringing about a chemical change?
light.
Fill in the blanK
A .............is a substance which changes the rate of a chemical reaction without undergoing a chemical change.
True or false
New substances are formed in a chemical change.
Give an example of the following chemical change.
Two solids combine to form a liquid
State the type of reactions for the following represent and balance the ones that are not balanced.
NaOH + HCl → NaCl + H2O
State the original colour of the following substance and colour of residue obtained after heating.
Copper carbonate
What do you observe when Cl2 is passed through potassium iodide (KI) solution.
Distinguish by heating the following in dry test tubs.
Zinc carbonate, Copper carbonate and lead carbonate.
Select the correct answer for the following options:
The gas which reacts with oxygen to give a neutral liquid.
Magnesium + oxygen → magnesium oxide.
2Mg + O2 → 2Mg O
