Three elements form their respective oxides A, B and C. A and C are gases and 'B' is a solid which on dissolution in water turns red litmus to blue. In presence of moisture, 'A' turns blue litmus red and 'C' is neutral to litmus. Then, A,B and C may be respectively

Three elements form their respective oxides A, B and C. A and C are ga

1.	Three elements form their respective oxides A, B and C. A and C are gases and 'B' is a solid which on dissolution in water turns red litmus to blue. In presence of moisture, 'A' turns blue litmus red and 'C' is neutral to litmus. Then, A,B and C may be respectively
Answer» `SO_(3), MgO, NO` `SO_(2), CAO, CO_(2)` `CO, Na_(2)O, SO_(3)` `SO_(2), Ca(OH)_(2), NO_(2)` SOLUTION :`SO_(3)` in presence of moisture TURNS blue red. 'NO' is neutral oxide and does not respond to litmus test. MgO is basic and turns red litmus blue.