1: A city has a population of 3,00,000 out of which 1,80,000 are males. 50% of the population is literate. If 70% of the males are literate, the number of literate females is
(a) 24,000
(b) 30,000
(c) 54,000
(d) 60,000
2: Lothal is
(a) A closed water system
(b) A poisonous gas
(c) A place in Gujarat where excavations have established a link with the Indus Valley civilisation
(d) Legal action taken against defectors
3: Acid rain is caused by the pollution of environment by
(a) carbon dioxide and nitrogen
(b) carbon monoxide and carbon dioxide
(c) ozone and carbon dioxide
(d) nitrous oxide and sulphur dioxide
4: Recently Unnao district of Uttar Pradesh was in news. Which of the following information about Unnao is true:
1. River Ganga flows through this district.
2. It is not the birth place of freedom fighter Chandra Sekhar Azad.
(a) Only 1 is true
(b) only 2 is true
(c) Both 1 and 2 is true
(d) Neither is true
5: Which one of the following plants is effective in reducing water pollution and is also useful for producing bio gas ?
(a) Eucalyptus
(b) Water hyacinth
(c) Salvinio
(d) Lotus