Melting of iron metal, bending of iron rod and drawing a wire of iron metal are physical changes because there is no change in the chemical composition of iron, only its form is changing.
Which of the following are physical changes? Melting of iron metal, rusting of iron, bending of iron rod, drawing a wire of iron metal.
Question
Which of the following are physical changes? Melting of iron metal, rusting of iron, bending of iron rod, drawing a wire of iron metal.
WhatsApp
💡 Some Related Questions
Anil and Roshan went to a restaurant to have dinner. Anil picked up the glass of water to drink but he immediately kept it back. He said, “The water was not fit for drinking.” Based on the above information answer the questions that follow: (𝒊)What could be the reason of it? (𝒊𝒊) How could have been the water made fit for drinking? Name the process. (𝒊𝒊𝒊) Which values are promoted by the restaurant people here?
Open Answer »While chopping vegetables Sushila’s mother accidently injured her fingers due to which she began bleeding profusely. Sushila immediately applied alum on the cut part (wound). The bleeding stopped after some time. (𝒊) Mention the value shown by Sushila in the above case. (𝒊𝒊) What is the role of alum used in the above case?
Open Answer »There student A, B and C prepared mixture using chalk powder, common salt and milk respectively in water. Whose mixture: (i) would not leave reside on filter paper after filtration? (ii) would show Tyndall effect? (iii) would give transparent/clear solution? (iv) would settle down at the bottom when left undisturbed? (v) could be filtered by filter paper?
Open Answer »