2.The pH of human blood is
3.Which amongst the following is largest endocrine gland in the body?
4.Which amongst the largest mammal?
5.Which part becomes modified as the tusk of elephant ?
(c) Second incisor
6.Optical fibres are based on the phenomenon of
(d) Total Internal Reflection
7.Now-a-days yellow lamps are frequently used as street lights. Which of the following gases is used in these lamps?
8.‘Mirage’ is an example of
(a) refraction of light only
(b) total internal, refraction of light only
(c) refraction and total internal reflection of light
(d) dispersion of light only
9.The phenomenon of light associated with the appear-ance of blue colour of the sky is
10.In which of the following areas, a spreadsheet software is more useful?
(d) Message sending