396: 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
397: Mycorrhizal biotechnology has been used in rehabilitating degraded sites because mycorrhiza enables the plants to

1. resist drought and increase absorptive area

2. tolerate extremes of pH

3. resist disease infestation

Select the correct answer using the codes given below.

(a) 1 only
(b) 1 and 3 only
(c) 2 and 3 only
(d) 1, 2 and 3
398: The Constitution of India borrowed the scheme of Indian Federation from the Constitution of

(a) USA

(b) Canada

(c) Ireland

(d) UK
399: It takes one minute to fill 3/7 th of a vessel. What is the time taken in minutes to fill the whole of the vessel ?

(a) 4/3

(b) 3/4

(c) 7/3

(d) 3/2
400: A person travels from X to Y a speed of 40 kmph and returns by increasing his speed by 50%. What is his average speed for both the trips ?
(a) 36 kmph
(b) 45 kmph
(c) 48 kmph
(d) 50 kmph