Question

Statement 1: Ammonia is a brown coloured gas.​
Statement 2: The boiling point of liquid ammonia is 100${}^o$C.​

• A. Statement (2) is correct and (1) is incorrect.​
• B. Both Statement (1) and (2) are incorrect.​
• C. Both Statement (1) and (2) are correct.​
• D. Statement (1) is correct and (2) is incorrect.​

Answer 1

The correct option is B Both Statement (1) and (2) are incorrect.​

The physical properties of ammonia are given below:

• It has a very pungent odour.
• It is a colourless gas.
• It tastes bitter.
• Its density is 0.75 ${kg/m}^3$ which means it is lighter than air.
• It is non-toxic in small doses but in large doses, it is toxic and might lead to organ failures.
• It is highly soluble in water and gives an aqueous solution of ammonium hydroxide.
• Its boiling point is - 33.5°C, thus it evaporates into a gas.
• It is basic in nature.

Since ammonia is a colourless odourless gas and its boiling point is - 33.5°C so both the statements are incorrect.

The correct answer is option (d).