821: Alauddin Khilji maintained control on price during his reign because:
(a) He wanted to keep large army at lower expenses.
(b) He had mercy with poor people.
(c) He wanted to gain popularity.
(d) All of the above
822: Among the following commodities imported by India during the year 2001-02, which one was the highest in terms of Rupee value?
(a) Edible oil
(b) Fertilizers
(c) Organic and inorganic chemicals
(d) Pearls, precious and semi-precious stones
823: Which one of the following is the correct sequence of ecosystems in the order of decreasing productivity?
(a) Oceans, lakes, grasslands, mangroves
(b) Mangroves, oceans, grasslands, lakes
(c) Mangroves, grasslands, lakes, oceans
(d) Oceans, mangroves, lakes, grasslands
824: Which of the following pairs is/are correctly matched ?
Inventor : Invention
1. Christopher : Hovercraft Cockerell
2. David Bushnell : Submarine
3. J.C. Perrier : Steamship
Select the correct answer using the code given below :
(a) 1 and 2, only
(b) 2 and 3, only
(c) 1 and 3, only
(d) 1, 2 and 3
825: Assertion (A) :
The effect of labour participation in the Indian nationalist upsurge of the early 1930's was weak.
Reason (R) :
The labour leaders considered the ideology of Indian National Congress as bourgeois and reactionary.
(a) Both A and R are individually true and R is the correct explanation of A
(b) Both A and R are individually true but R is not a correct explanation of A
(c) A is true but R is false
(d) A is false but R is true