The physical change among the options given is "Mixing of iron filling and Sulphur".

Here's why:

1. Formation of curd: This is a chemical change because it involves the process of fermentation. The lactose in the milk changes into lactic acid with the help of bacteria, which is a chemical process.

2. Formation of wine: This is also a chemical change. It involves the process of fermentation where the sugar in the grapes is converted into alcohol and carbon dioxide by yeast.

3. Mixing of iron filling and Sulphur: This is a physical change. When iron filings are mixed with sulphur powder, no new substance is formed. They can be separated by physical methods like using a magnet to remove the iron.

4. Ripening of fruit: This is a chemical change. During ripening, the starch in the fruit is converted into sugar. This process involves a change in the chemical composition of the fruit.

So, the physical change in the given options is the mixing of iron filling and Sulphur.

Question

The physical change among the options given is "Mixing of iron filling and Sulphur".

Here's why:

1. Formation of curd: This is a chemical change because it involves the process of fermentation. The lactose in the milk changes into lactic acid with the help of bacteria, which is a chemical process.

2. Formation of wine: This is also a chemical change. It involves the process of fermentation where the sugar in the grapes is converted into alcohol and carbon dioxide by yeast.

3. Mixing of iron filling and Sulphur: This is a physical change. When iron filings are mixed with sulphur powder, no new substance is formed. They can be separated by physical methods like using a magnet to remove the iron.

4. Ripening of fruit: This is a chemical change. During ripening, the starch in the fruit is converted into sugar. This process involves a change in the chemical composition of the fruit.

So, the physical change in the given options is the mixing of iron filling and Sulphur.

Knowee AI · Accepted Answer

The physical change among the options given is "Mixing of iron filling and Sulphur".

Here's why:

1. Formation of curd: This is a chemical change because it involves the process of fermentation. The lactose in the milk changes into lactic acid with the help of bacteria, which is a chemical process.

2. Formation of wine: This is also a chemical change. It involves the process of fermentation where the sugar in the grapes is converted into alcohol and carbon dioxide by yeast.

3. Mixing of iron filling and Sulphur: This is a physical change. When iron filings are mixed with sulphur powder, no new substance is formed. They can be separated by physical methods like using a magnet to remove the iron.

4. Ripening of fruit: This is a chemical change. During ripening, the starch in the fruit is converted into sugar. This process involves a change in the chemical composition of the fruit.

So, the physical change in the given options is the mixing of iron filling and Sulphur.

Which of the following is a physical change?Formation of curdFormation of wineMixing of iron filling and SulphurRipening of fruit

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