Which of the following statements are true for pure substances? (i) Pure substances contain only one kind of particles (ii) Pure substances may be compounds or mixtures (iii) Pure substances have the same composition throughout (iv) Pure substances can be exemplified by all elements other than nickel

Rusting of an article made up of iron is called

Tincture of iodine has antiseptic properties. This solution is made by dissolving

Which of the following are homogeneous in nature? (i) ice (ii) wood (iii) soil (iv) air

Which of the following are physical changes? (i) Melting of iron metal (ii) Rusting of iron (iii) Bending of an iron rod (iv) Drawing a wire of iron metal