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Shanaya

Asked: November 23, 2020In: Class 7 Science

Anaerobic bacteria digest animal waste and produce biogas (Change – A). The biogas is then burnt as fuel (Change – B). The following statements pertain to these changes. Choose the correct one.

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: 12

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Asked: November 23, 2020In: Class 7 Science

The gas we use in the kitchen is called liquified petroleum gas (LPG). In the cylinder it exist as a liquid. When it comes out from the cylinder it becomes a gas (Change – A) then it burns (Change – B). The following statements pertain to these changes. Choose the correct one.

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: 11

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