3441: A candidate to become a member of Lok Sabha should not be less than:
(a) 21 years
(b) 25 years
(c) 30 years
(d) 35 years
3442: Permanent hardness of water cannot be removed by:
(a) Boiling
(b) Adding caustic soda
(c) Distillation
(d) Adding soda
3443: A person of mixed European and Indian blood in Latin America is called a
(a) Mulatto
(b) Mestizo
(c) Meiji
(d) Mau Mau
3444: A and B can do a piece of work in 4 days. If A can do it alone in 12 days, how much time B will take to finish it alone?
(a) 4 days
(b) 6 days
(c) 8 days
(d) 10 days
3445: The phenomenon of mirage is due to:
(a) Increased absorption of light by air at higher temperature
(b) Change in the refractive index of air with the change in temperature
(c) Total internal reflection
(d) Decreased absorption of light by air at higher temperature