796: Rainfall on the east coast of Tamil Nadu occurs during October to November due to
(a) Winter monsoon
(b) Retreating south-west monsoon
(c) North-west monsoon
(d) Local winds
797: In India, the use of carbofuran, methyl parathion, phorate and triazophos is viewed with apprehension. These chemicals are used as
(a) pesticides in agriculture
(b) preservatives in processed foods
(c) fruit-ripening agents
(d) moisturising agents in cosmetics
798: The oldest Hindu epic is:
(a) Mahabhashya
(b) Ramayana
(c) Ashtadhyayi
(d) Mahabharata
799: Normally, the temperature decreases with the increase in height from the Earth's surface, because
1. the atmosphere can be heated upwards only from the Earth's surface
2. there is more moisture in the upper atmosphere
3. the air is less dense in the upper atmosphere
Select the correct answer using the codes given below :
(a) 1 only
(b) 2 and 3 only
(c) 1 and 3 only
(d) 1, 2 and 3
800: The speed of light will be minimum while passing through
(a) glass
(b) vacuum
(c) water
(d) air