4021: Who among the following was associated with the suppression of Thugs ?
(a) General Henry Frendergast
(b) Captain Sleeman
(c) Alexander Burnes
(d) Captain Robert Pemberton
4022: What can be the impact of excessive / inappropriate use of nitrogenous fertilizers in agriculture?
1. Proliferation of nitrogen-fixing microorganisms in soil can occur.
2. Increase in the acidity of soil can take place.
3. Leaching of nitrate to the ground-water can occur.
Select the correct answer using the code given below.
(a) 1 and 3 only
(b) 2 only
(c) 2 and 3 only
(d) 1, 2 and 3
4023: Who among the following ladies wrote a historical account during the Mughal period ?
(a) Gulbadan Begum
(b) Nurjahan Begum
(c) Jahanara Begum
(d) Zebunnissa Begum
4024: Water is a good solvent of ionic salts because
(a) it has a high boiling point
(b) it has a high dipole moment
(c) it has a high specific heat
(d) it has no colour
4025: Among the agricultural commodities imported by India, which one of the following accounts for the highest imports in terms of value in the last five years?
(a) Spices
(b) Fresh fruits
(c) Pulses
(d) Vegetable oils