86: In a particular region in India, the local people train the roots of living trees into robust bridges across the streams. As the time passes, these bridges become stronger. These unique 'living root bridges' are found in
(a) Meghalaya
(b) Himachal Pradesh
(c) Jharkhand
(d) Tamil Nadu
87: The caves and rock-cut temples at Ellora are
(a) Buddhist
(b) Buddhist and Jain
(c) Hindu and Jain
(d) Hindu, Buddhist and Jain
88: Consider the following:
1. Oxides of Hydrogen
2. Oxides of Nitrogen
3. Oxides of Sulphur
Which of the above causes/cause acid rain ?
(a) 1 and 2 only
(b) 2 and 3 only
(c) 3 only
(d) 1, 2 and 3
89: Consider the following animals
1. Sea cow
2. Sea horse
3. Sea lion
Which of the above is/are mammal/mammals?
(a) 1 only
(b) 2 and 3 only
(c) 1 and 3 only
(d) 1, 2 and 3
90: Two men A and B have different basic salaries but get equal emoluments. Their allowances are 65% and 80% of their basic salaries respectively. The ratio of their basic salaries is:
(a) 13 : 16
(b) 8 : 9
(c) 12 : 11
(d) 80 : 65