$A$ little baby was playing in a park with his maid. Suddenly,he fell down and got a minor injury. The maid applied tincture of iodine on the wound.
$(a)$ Why did she apply tincture of iodine on the wound?
$(b)$ Name the solute and solvent present in tincture of iodine.
$(c)$ Enlist the values shown by the maid.

Which of the following is raised as food for the livestock?

Poultry fowl are susceptible to the following pathogens:

Sahil's grandfather had a prostate problem. The doctor advised him to go in for an ultrasound. Sahil accompanied his grandfather to a diagnostic centre. His grandfather went through the process and was given a photograph.
$(a)$ What is the principle of ultrasound? What waves are used for this purpose?
$(b)$ Name four other areas in which the ultrasound is used as a diagnostic tool.
$(c)$ What value did Sahil imbibe about ultrasound?

List two desirable traits for fodder crops.

Identify two crops from the following which provide us carbohydrates for energy requirement:
Black gram,Wheat,Lentil,Rice