Which is the most effective and piratical way to raise the PH of acid soil?

Which of the following statements is true about Entomology?

Shellac is secreted by

Tassar silk is also known as

Tassar silk is majorly grown in

Which of the following is not matched correctly? 

Which of the following is correctly matched ?

Which silkworm feedw on castor tree

Which one of the following is red in the adult of red hairy caterpillar?

Which of the following is not a natural predator of BPH?

The scientific name of dammer bee is