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  Matter in Our Surroundings 1.For question numbers 1 to 11, two statements are given-one labeled  Assertion (A) and the other labeled Reason (R). Select the correct answer to these questions from the codes (a), (b). (c) and (d) as given below : (a) Both A and R are true and R is the correct explanation of the assertion. (b) Both A and Rare true but R is not the correct explanation of the assertion. (c) A is true but R is false.  (d) A is false but R is true. (I Mark)  1. Assertion (A) :  Substances like sugar and salt are insoluble in water and on dissolving, they settle down at the bottom Reason (R) :  When we dissolve salt in water, the particles of salt get mixed into the spaces between the particles of water. 2. Assertion (A) :  Sponge is a solid.  Reason (R) :  Sponge can change its shape under force and regains its shape when force is removed and it breaks on applying greater force. 3. Assertion (A) :  Copper sulphate and potassi...