NCERT solution //Class 7// Science //Chapter 6- Physical and chemical changes
NCERT solution > Class 7 > Science > Chapter 6 -Physical and chemical changes NCERT solution //Class 7// Science //Chapter 6- Physical and chemical changes Exercise Q1. Classify the changes involved in the following process as a physical or chemical changes a) Photosynthesis b) Dissolving sugar in water c) Burning of coal d) Melting of wax e) Beating aluminium to make Aluminium foil f) Digestion of food Answer a) Chemical change b) Physical change c) Chemical change d) Physical change e) Physical change f )Chemical change Q2. State whether the following statements are true or false in case of statement is false write the correct it is to told in your notebook ? a) Cutting a log of wood into pieces is a chemical change Answer - False Correct statement - cutting a log of wood into pieces is a physical change b) Formation of manure from leaves is a p...