aluminium

1. The example of open chain compound is—
 (A) Benzene (B) Pyridine (C) Ethane (D) Cyclopropane

2. Ammonia gas is— (A) Coloured (B) Heavy (C) Insoluble in water (D) Colourless

3. Sulphur dioxide is used in— (A) Purification of milk (B) Purification of petroleum (C) Purification of air (D) None of the above

4. Which of the following is least basic ? (A) Potassium (B) Calcium (C) Beryllium (D) Magnesium

5. The diagonal relationship of aluminium is with— (A) Li (B) Be (C) B (D) Si

6. The element of electronic configuration 1s2 2s2 2p6 3s2 will be— (A) Metal (B) Non-metal (C) Inert gas (D) None of these 7. Uranium is a member of— (A) Actinide series (B) Transition series (C) II period (D) VI period 8. The fourth member of compound having general formula CnH2n + 2 is— (A) Ethane (B) Propane (C) Pentane (D) Butane 9. Saponification is a process of making— (A) Soap (B) Detergent (C) Jam (D) None of these 10. ................... is used in ripening of fruits. (A) Methane (B) Ethane (C) Propane (D) Ethylene