506: Consider the following events :

I. Indigo Revolt

II. Santhal Rebellion

III. Deccan Riot

IV. Mutiny of the Sepoys

The correct chronological sequence of these events is :

(a) IV, II, I, III
(b) IV, II, III, I
(c) II, IV, III, I
(d) II, IV, I, III
507: Sir J. C. Bose was a great scientist because he showed the:

(a) Sensitivity in plants

(b) Pigments in plants

(c) Growth in plants

(d) Relations between plants and animals
508: Which one of following is produced during the formation of photochemical smog?

(a) Hydrocarbons

(b) Nitrogen Oxides

(c) Ozone

(d) Methane
509: Which one of the following ports handled the north Indian trade during the Gupta period ?

(a) Tamralipti

(b) Broach

(c) Kalyan

(d) Cambray
510: A boy carved his initials on the-bark of a tree at a height of 2.5 m above the ground when the tree was 5 m tall. In 10 years the tree attained a height of 15 m. The initials carved by the boy 10 years ago will now be found:

(a) At 2.5 m above the ground

(b) At 7.5 m above the ground

(c) At 12.5 m above the ground

(d) At 15.0 m above the ground