Damping off of seedlings is caused by
Decibel unit is used to measure?
Deficiency of which vitamin leads to 'Rickets' (softening of bones)?
Dry ice is:
During burnings of fuels, carbon and hydrogen present in the fuels are:
Edward Jenner is associated with
Due to its ability to dissolve glass, which acid is not kept in glass container ?
Diamond is harder than graphite because of:
Deep blue colour is imparted to glass by the presence of: