Questions

Isotopes are variations of an element that have the same charge as the original element, but a different mass, which is caused by either more/less neutrons in the nucleus.

No improvement required. Grant means to permit as a favor. As the interview will be a favor the use of Grant is correct.

Vitiligo is a condition in which the skin loses its pigment cells (melanocytes). This can result in discolored patches in different areas of the body, including the skin, hair, retina and mucous membranes.

Many disorders have been linked to vitiligo. They are::

Hashimoto thyroiditis,

Graves disease,

Addison disease and

diabetes mellitus,

alopecia areata,

pernicious anemia,

inflammatory bowel disease,

psoriasis, and

autoimmune polyglandular syndrome.

PIN (Postal Index Number) was introduced in INDIA on August 15, 1972. This is the coding system used by postal services of India for different areas. Totally in our country there are 9 divisions, of which 8 are geographical & 9th is reserved to army.

The closet point in the Moon's orbit to Earth is called perigee whereas the farthest point in the Moon's orbit to Earth is called apogee.