CSIR NET 2016 Life Science Question Paper (19-Jun-2016)

Question 1

An infinite number of identical circular discs each of radius $\frac{1}{2}$ are tightly packed such that the centres of the discs are at integer values of coordinates x and y. The ratio of the area of the uncovered patches to the total area is

Accepted Answer

$1 - \pi/4$

Answer

$\pi/4$

Answer

$1 - \pi$

Answer

$\pi$

Question 2

It takes 5 days for a steamboat to travel from A to B along a river. It takes 7 days to return from B to A. How many days will it take for a raft to drift from A to B (all speeds stay constant)?

Accepted Answer

35

Answer

13

Answer

6

Answer

12

Question 3

"My friend Raju has more than 1000 books", said Ram. "Oh no, he has less than 1000 books", said Shyam. "Well, Raju certainly has at least one book", said Geeta. If only one of these statements is true, how many books does Raju have?

Accepted Answer

1000

Answer

1

Answer

999

Answer

1001

Question 4

Of the following, which is the odd one out?

Accepted Answer

Torus

Answer

Cone

Answer

Sphere

Answer

Ellipsoid

Question 5

A student appearing for an exam is declared to have failed the exam if his/her score is less than half the median score. This implies

Accepted Answer

it is possible that no one fails.

Answer

$1/4$ of the students appearing for the exam always fail.

Answer

if a student scores less than $1/4$ of the maximum score, he/she always fails.

Answer

if a student scores more than $1/2$ of the maximum score, he/she always passes.

CSIR NET 2016 Life Science Question Paper (19-Jun-2016)

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