3356: 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
3357: A student has 60% chance of passing in English and 54% chance of passing in both English and Mathematics. What is the percentage probability that he will fail in Mathematics ?
(a) 12
(b) 36
(c) 4
(d) 10
3358: Consider the following chemicals :
1. Benzene
2. Carbon tetrachloride
3. Sodium Carbonate
4. Trichloroethylene
Which of the above is/are used as dry cleaning chemicals ?
(a) 1 Only
(b) 2 Only
(c) 1, 2 and 4 Only
(d) 1, 2, 3 and 4
3359: Consider the following statements:
As per 2001 Census
1. The two States with the lowest sex ratio are Haryana and Punjab.
2. The two States with the lowest population per sq km of area are Meghalaya and Mizoram.
3. Kerala has both the highest literacy rate and sex ratio.
Which of the statements given above is/are correct?
(a) 3 only
(b) 2 and 3
(c) 1 and 2
(d) 1 and 3
3360: Match List-I (Distinguished Ladies) with List-II (Area of Work) and select the correct answer using the codes given below the Lists:
List-I List-II
(Distinguished Ladies) (Area of Work)
A. Jhumpa Lahiri 1. Science and environment
B. Sunita Narain 2. Novel-writing
C. Naina Lal Kidwai 3. Film industry
D. Ravina Raj Kohli 4. Banking
5. Television media
Codes :
A B C D
(a) 4 5 3 1
(b) 2 1 4 5
(c) 4 1 3 5
(d) 2 5 4 1