Find the distance between two parallel chords of length

Premature leaf fall of apple is caused by

Which one of the following scientists coined the term allelopathy in 1937?

Blue chaff disease of oats is due to deficiency of:

Maize is generally not grown in

Khaira disease in rice field is due to the deficiency of which of the following nutrient?

Which of the following is a benefit of Zero Budget Natural Farming?

Which one among the following is used as a pulse, fodder and green manure crop?

Which insect order shares the closest evolutionary relationship with Diptera?

The critical slope for soil erosion is:

Frame-shift mutation is caused by: