(a) Crystalline granular rocks are formed when magma is cooled suddenly (b) Stones formed due to chemical reactions are crystalline (c) Granite can be easily dressed (d) Carving work can be done on sand stones Answer: (d)

(a) Artificial marble (b) Ford (c) Cement concrete block (d) Chemical stone Answer: (a)

(a) Lime stone (b) Sand stone (c) Slate (d) Artificial stone Answer: (d)

(a) Laterite (b) Lime stone (c) Sand stone (d) Gneiss Answer: (c)

(a) Marble is not a workable stone (b) Layered stones are formed when magma cools slowly (c) Ford is an artificial stone (d) Laterite is suitable to cover roof Answer: (c)

(a) Slate (b) Granite (c) Dolerite (d) Synite Answer: (a)

(a) Lime stone (b) Granite (c) Laterile (d) Slate Answer: (d)