51: Which of the following practices can help in water conservation in agriculture?
1. Reduced or zero tillage of the land
2. Applying gypsum before irrigating the field
3. Allowing crop residue to remain in the field
Select the correct answer using the code given below :
a. 1 and 2 only
b. 3 only
c. 1 and 3 only
d. 1, 2 and 3
52: Assertion (A) :
Synthetic detergents can lather well in hard water.
Reason (R) :
Synthetic detergents form soluble calcium and magnesium salts with hard water.
(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
53: Assertion (A):
The Gandhara School of art bears the mark of Hellenistic influence.
Reason (R):
Hinayana form was influenced by that art.
(a) Both A and R are true, and R is the correct explanation of A
(b) Both A and R are 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
54: Who among the following repealed the Vernacular Press Act?
(a) Lord Hardinge
(b) Lord Curzon
(c) Lord Dufferin
(d) Lord Ripon
55: Which one of the following is the correct sequence of the given Indian cities in the decreasing order of their normal annual rainfall?
(a) Kochi - kolkata - Delhi - Patna
(b) kolkata - Kochi - Delhi - Patna
(c) Kochi - kolkata - Patna - Delhi
(d) kolkata - Kochi - Patna - Delhi