86: A big rectangular plot of area 4320 m2 is divided into 3 square-shaped smaller plots by fencing parallel to the smaller side of the plot. However, some area of land was still left as a square could be formed. So, 3 more square shaped plots were formed by fencing parallel to the longer side of the original plot such that no area of the plot was left surplus. What are the dimensions of the original plot?
(A) 120 m x 36 m
(B) 135 m x 32 m
(C) 240 m x 18 m
(D) 160 m x 27 m
87: Galvanising of sheet iron is done by dipping the sheet metal into molten
(a) Mercury
(b) Cadmium
(c) Lead
(d) Zinc
88: With reference to agriculture in India, how can the technique of genome sequencing, often seen in the news, be used in the immediate future?
1. Genome sequencing can be used to identify genetic markers for disease resistance and drought tolerance in various crop plants.
2. This technique helps in reducing the time required to develop new varieties of crop plants.
3. It can be used to decipher the host-pathogen relationships in crops.
Select the correct answer using the code given below:
(a) 1 only
(b) 2 and 3 only
(c) 1 and 3 only
(d) 1, 2 and 3
89: Assertion (A):
The emergence of economic globalism does not imply the decline of socialist ideology.
Reason (R):
The ideology of Socialism believes in universalism and globalism.
In the context of the above two statements, which one of the following is correct ?
(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
90: Which of the following phenomena might have influenced the evolution of organisms?
1. Continental drift
2. Glacial cycles
Select the correct answer using the code given below.
(a) 1 only
(b) 2 only
(c) Both 1 and 2
(d) Neither 1 nor 2