(a) Just audible sound

(b) Ordinary conversion

(c) Sound from a noisy street

(d) Noise from a machine shop

(a) refraction

(b) interference

(c) scattering

(d) total internal reflection

(a) Both of them are of plant origin

(b) Both of them give colour with iodine

(c) Both of them are made up of glucose molecules

(d) Both of them are polymers

(a) Chickpea

(b) Tomato

(c) Daffodil

(d) Wheat

(a) Its grains contain pro-vitamin A which upon ingestion is converted to vitamin A in the human body

(b) The grains have been fortified with genes to provide three times higher grain yield per acre than other high yielding varieties

(c) Its modified genes cause the synthesis of all the nine essential amino acids

(d) Its modified genes cause the fortification of its grains with vitamin D