Gate 2011 EC key and answers in detail

Q. No. 56 – 60 Carry One Mark Each
56. There are two candidates P and Q in an election. During the campaign, 40% of
the voters promised to vote for P, and rest for Q. However, on the day of election
15% of the voters went back on their promise to vote for P and instead voted for
Q. 25% of the voters went back on their promise to vote for Q and instead voted
for P. Suppose, P lost by 2 votes, then what was the total number of voters?
 (A) 100 (B) 110 (C) 90 (D) 95
Answer: - (A)

57. Choose the most appropriate word from the options given below to complete the
following sentence:
 It was her view that the country's problems had been_________ by
foreign technocrats, so that to invite them to come back would be
counter-productive.
 (A) Identified   (B) ascertained   (C) Texacerbated  (D) Analysed
Answer: - (C)
Exp: -The clues in the question are ---foreign technocrats did something negatively to
the problems – so it is counter-productive to invite them. All other options are
non-negative. The best choice is exacerbated which means aggravated or
worsened.
58. Choose the word from the options given below that is most nearly opposite in
meaning to the given word:
Frequency
(A) periodicity   (B) rarity
 (C) gradualness   (D) persistency
Answer: - (B)
Exp: - The best antonym here is rarity which means shortage or scarcity.
59. Choose the most appropriate word from the options given below to complete the
following sentence:  Under ethical guidelines recently adopted by the
Indian Medical Association, human genes are to be manipulated only to
correct diseases for which______________ treatments are
unsatisfactory.
 (A) Similar (B) Most (C) Uncommon (D) Available
Answer: - (D)
Exp: - The context seeks to take a deviation only when the existing/present/current/
alternative treatments are unsatisfactory. So the word for the blank should be a
close synonym of existing/present/current/alternative. Available is the closest of
all.
60. The question below consists of a pair of related words followed by four pairs of
words. Select the pair that best expresses the relation in the original pair:
Gladiator : Arena
 (A) dancer : stage   (B) commuter: train
 (C) teacher : classroom  (D) lawyer : courtroom
Answer: - (D)
                                                              
Exp: - The given relationship is worker: workplace. A gladiator is (i) a person, usually a
professional combatant trained to entertain the public by engaging in mortal
combat with another person or a wild.(ii) A person engaged in a controversy or
debate, especially in public.

http://www.ziddu.com/download/14014094/EC-GATE-2011.pdf.html


Q. No. 61 – 65 Carry Two Marks Each 

62. Three friends, R, S and T shared toffee from a bowl. R took 1/3rd  of the toffees, but returned four to the bowl. S took 1/4th of what was left but returned three toffees to the bowl. T took half of the remainder but returned two back into the bowl. If the bowl had 17 toffees left, how many toffees-were originally there in
the bowl?
 (A) 38 (B) 31 (C) 48 (D) 41
Answer: - (C)
Exp: - Let the total number of toffees is bowl be X
 R took 1/3 of toffees and returned 4 to the bowl
∴ Number of toffees with R =1/3X- 4

 Remaining of toffees in bowl = 2/3X+4

⇒ = x 48
63. Given that f(y) = | y | / y, and q is any non-zero real number, the value of
 | f(q) - f(-q) | is
 (A) 0 (B) -1 (C) 1 (D) 2
Answer: - (D)

64. The sum of n terms of the series 4+44+444+.... is


** for remaining questions and answers refer the below document

http://www.ziddu.com/download/14014094/EC-GATE-2011.pdf.html

         http://www.ziddu.com/download/14014094/EC-GATE-2011.pdf.html