Which of the following are used to preserve food grains at home?

The process of storing grains, including wheat, rice, corn, and barley, for future use is referred to as grain storage. Grain must be stored properly to maintain its nutritional content and quality, guard against pest and moisture damage, and reduce losses from spoiling and waste.

Grain storage is important for preserving quality and preventing contamination by pests such as insects and rodents, as well as microorganisms such as fungi and bacteria. 

The grains are also stored at home, and they also need to be protected from various insects, mites etc. 

They need to be prevented from being spoilt. 

The dried neem leaves are used to preserve the food grains at home as they are readily available and provide protection against microorganisms and pests. 

The characteristic smell of neem repels various species of mites, worms and insects.