Which compound is normally used as a drying agent for ammonia?

Q. is used as a drying agent during the production of ammonia.

Q. The following questions are based on the preparation of ammonia gas in the laboratory:
Name the compound normally used as a drying agent during the process.

Q.

For ammonia, why is quicklime used as the drying agent?

Q. To dry ammonia gas the drying agent used is :