Sneezing and Yawning

Q.

State whether the following statement is true or false.

“Oxygen gas is used to preserve food”.

1. True
2. False

Q. expels the foreign particles in inhaled air, which irritate the lining of the nasal cavity.

1. Crying
2. Coughing
3. Sneezing

Q. _______ helps in expelling foreign particles from the nasal cavity.