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One property of ammonia is
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- It is insoluble in water
- It is a odourless gas
- It is a yellowish gas
- Its aqueous solution turns red litmus blue
- It is insoluble in water
Correct Option: D
The main use of litmus is to test whether a solution is acidic or basic. For instance, ammonia gas, which is alkaline, colours the red litmus paper blue.