CSIR NET 2019 Physical Science Question Paper (16-Jun-2019)

Question 1

In a bacterial cell, a protein is synthesized at random location in the cytoplasm. The protein has to reach one pole of the cell for its appropriate function. The protein reaches the pole by

Accepted Answer

random movement

Answer

chemical attraction

Answer

enzymatic action

Answer

attraction between opposite charges

Question 2

A precious stone breaks into four pieces having weights in the proportion 1:2:3:4. The value of such a stone is proportional to the square of its weight. What is the percent loss in the value incurred due to breaking?

Accepted Answer

70

Answer

0

Answer

30

Answer

90

Question 3

Two runners starting together run on a circular path taking 6 and 8 minutes, respectively, to complete one round. How many minutes later do they meet again for the first time on the start line, assuming constant speeds?

Accepted Answer

24

Answer

8

Answer

32

Answer

60

Question 4

The distribution of grades secured by students in a class is given in the table below.GradeFraction of the populationA0.1B0.4C0.3D0.2What is the least possible population of the class?

Accepted Answer

10

Answer

2

Answer

4

Answer

8

Question 5

The nine numbers $x_1, x_2, x_3 ... x_9$, are in ascending order. Their average $m$ is strictly greater than all the first eight numbers. Which of the following is true?

Accepted Answer

Average $(x_1, x_2 ... x_9, m) = m$ and Average $(x_2, x_3, ... x_9) > m$

Answer

Average $(x_1, x_2 ... x_9, m) > m$ and Average $(x_2, x_3, ... x_9) > m$

Answer

Average $(x_1, x_2 ... x_9, m) < m$ and Average $(x_2, x_3, ... x_9) < m$

Answer

Average $(x_1, x_2 ... x_9, m) < m$ and Average $(x_2, x_3, ... x_9) = m$

CSIR NET 2019 Physical Science Question Paper (16-Jun-2019)

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Grade	Fraction of the population
A	0.1
B	0.4
C	0.3
D	0.2