1281: Consider the following events :

I. Reign of Krishnadevaraya of Vijayanagara.

II. Construction of Qutab Minar.

III. Arrival of Portuguese in India.

IV. Death of Firoz Tughlaq.

(a) II, IV, III, I
(b) II, IV, I, III
(c) IV, II, I, III
(d) IV, II, III, I
1282: In which one among the following is the speed of sound maximum ?

(a) Air at 100 degree celcius
(b) Air at 0 degree celcius
(c) Wood
(d) Water
1283: 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
1284: Open stunted forests with bushes and small trees having long roots and sharp thorns or spines are commonly found in

(a) Eastern Orissa
(b) North-Eastern Tamil Nadu
(c) Siwaliks an Terai region
(d) Western Andhra Pradesh
1285: Radioactive element which has been found to have large reserves in India is:

(a) Thorium

(b) Uranium

(c) Radium

(d) Plutonium