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Shanaya

Asked: November 23, 2020In: Class 7 Science

Explain why rusting of iron objects is faster in coastal areas than in deserts.

NCERT Solutions for Class 7 Science Chapter 6 Important NCERT Questions 7th Chapter 6 Physical and Chemical Changes NCERT Books for Session 2022-2023 CBSE Board and State Board Questions No: 10

Shanaya

Asked: November 23, 2020In: Class 7 Science

Explain how painting of an iron gate prevents it from rusting.

NCERT Solutions for Class 7 Science Chapter 6 Important NCERT Questions 7th Chapter 6 Physical and Chemical Changes NCERT Books for Session 2022-2023 CBSE Board and State Board Questions No: 9

Shanaya

Asked: November 23, 2020In: Class 7 Science

Describe how crystals of copper sulphate are prepared.

NCERT Solutions for Class 7 Science Chapter 6 Important NCERT Questions 7th Chapter 6 Physical and Chemical Changes NCERT Books for Session 2022-2023 CBSE Board and State Board Questions No: 8

Shanaya

Asked: November 23, 2020In: Class 7 Science

Explain why burning of wood and cutting it into small pieces are considered as two different types of changes.

NCERT Solutions for Class 7 Science Chapter 6 Important NCERT Questions 7th Chapter 6 Physical and Chemical Changes NCERT Books for Session 2022-2023 CBSE Board and State Board Questions No: 7

Shanaya

Asked: November 23, 2020In: Class 7 Science

When a candle burns, both physical and chemical changes take place. Identify these changes. Give another example of a familiar process in which both the chemical and physical changes take place.

NCERT Solutions for Class 7 Science Chapter 6 Important NCERT Questions 7th Chapter 6 Physical and Chemical Changes NCERT Books for Session 2022-2023 CBSE Board and State Board Questions No: 5

Explain why rusting of iron objects is faster in coastal areas than in deserts.

Explain how painting of an iron gate prevents it from rusting.

Describe how crystals of copper sulphate are prepared.

Explain why burning of wood and cutting it into small pieces are considered as two different types of changes.

When a candle burns, both physical and chemical changes take place. Identify these changes. Give another example of a familiar process in which both the chemical and physical changes take place.

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