Question Paper UGC - NET - Earth Science
1. Let m and n be two positive integers such that m + n +mn = 118Then the value of m + n is:
(A) Not uniquely determined
(B) 18
(C) 20
(D) 22
Answer: (D)
2. Starting from a point A you fly one mile south, then one mile east, then one mile north which brings you back to point A. Point A is NOT the north pole. Which of the following MUST be true?
(A) You are in the Northern Hemisphere
(B) You are in the Eastern Hemisphere
(C) You are in the Western Hemisphere
(D) You are in the Southern Hemisphere
Answer: (D)
3. Jar W contains 40 white marbles and jar B contains 40 black marbles. Ten black marbles from B are transferred to W and mixed thoroughly. Now, ten randomly selected marbles from W are put back in Jar B to make 40 marbles in each jar. The number of black marbles in W:
(A) Would be equal to the number of white marbles in B
(B) Would be more than the number of white marbles in B
(C) Would be less than the number of white marbles in B
(D) Cannot be determined from the information given
Answer: (A)
4. How many non-negative integers less than 10,000 are there such that the sum of the digits of the number is divisible by three?
(A) 1112
(B) 2213
(C) 2223
(D) 3334
Answer: (D)
5. Of three persons A, B and C, one always lies while the others always speak the truth. C asked A, “Do you always speak the truth, yes or no?” he said something that C could not hear. So, C asked B. “What did A say?” B replied , “A said No”.So who is the liar?
(A) A
(B) B
(C) C
(D) Cannot be determined
Answer: (B)
6. A pyramid shaped toy is made by tightly placing cubic blocks of 1 x1 x 1 cm3. The base of the toy is a square 4 x 4 cm2. The width of each step is 0.5 cm. How many blocks are required to make the toy?
(A) 30
(B) 34
(C) 36
(D) 40
Answer: (A)
7. Information in DNA is in the form of sequence of 4 bases namely A, T, G and C. the proportion of G is same as that of C, and that of A is the same as that of T. Which of the following strands of DNA will potentially have maximum diversity (i.e. maximum information content per base)?
(A) Length 1000 bases with 10% G
(B) Length 2000 bases with 10% A
(C) Length 2000 bases with 40% T
(D) Length 1000 bases with 25% C
Answer: (D)
8. Two plane mirrors facing each other are kept at to each other. A point is located on the angle bisector. The number of images of the point is:
(A) 6
(B) 3
(C) 5
(D) Infinite
Answer: (C)
9. I bought a shirt at 10% discount and sold it to a friend at a loss of 10%. If the friend paid me Rs729.00 for the shirt, what was the undiscounted price of the shirt?
(A) Rs900
(B) Rs800
(C) Rs1000
(D) Rs911.25
Answer: (A)
10. A single celled spherical organism contains 70% water by volume. If it loses 10% of its water content, how much would its surface area change by approximately?
(A) 3%
(B) 5%
(C) 6%
(D) 7%
Answer: (B)
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