Question:
To dry ammonia gas the drying agent used is
To dry ammonia gas the drying agent used is
Updated On: Apr 1, 2026
- conc. $\ce{H_2SO_4}$
- $\ce{P_2O_5}$
- quick lime
- anhydrous $\ce{CaCl_2}$
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The Correct Option is C
Solution and Explanation
Moist $ {NH_3}$ is dried over quick lime $ {(CaO)}$. lt cannot be dried over cone. $ {H_2SO_4}$ or $ {P_2O_5}$ because being basic it forms Salts with them. Anhydrous $ {CaCl_2}$ also cannot be used because it forms a complex $ {CaCl_2.8NH_3}$ with ammonia.
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Concepts Used:
P-Block Elements
- P block elements are those in which the last electron enters any of the three p-orbitals of their respective shells. Since a p-subshell has three degenerate p-orbitals each of which can accommodate two electrons, therefore in all there are six groups of p-block elements.
- P block elements are shiny and usually a good conductor of electricity and heat as they have a tendency to lose an electron. You will find some amazing properties of elements in a P-block element like gallium. It’s a metal that can melt in the palm of your hand. Silicon is also one of the most important metalloids of the p-block group as it is an important component of glass.
P block elements consist of:
- Group 13 Elements: Boron family
- Group 14 Elements: Carbon family
- Group 15 Elements: Nitrogen family
- Group 16 Elements: Oxygen family
- Group 17 Elements: Fluorine family
- Group 18 Elements: Neon family