CSIR NET 2020 Chemical Science Prev. Yr. Paper (30-Nov-2020)

Question 1

Single-grain density and bulk density of four varieties of grains are given in the table. If we take 1 kg of each of these, which one will have the largest volume?GrainSingle-grain density (g/cm3)Bulk density (g/cm3)Rice1.130.56Wheat1.390.80Millet1.270.77Maize0.970.68

Accepted Answer

Rice

Answer

Wheat

Answer

Millet

Answer

Maize

Question 2

What will be the difference in mass (in g) between two packets each containing 500 sheets of 80 GSM and 70 GSM papers of size 20 cm &times; 30 cm? (GSM = g/m2)

Accepted Answer

300

Answer

200

Answer

2000

Answer

3000

Question 3

Suppose there are 6 non-stop flights from Chennai to Mumbai in the morning and 4 non-stop flights from Mumbai to Goa in the evening. In how many ways can one fly from Chennai to Goa via Mumbai using these flights in a day?

Accepted Answer

24

Answer

10

Answer

46

Answer

64

Question 4

A pack contains 6 cards numbered 1, 2, 3, 4, 5 and 6. Four cards are drawn one by one at random without replacement. What is the probability that the card numbered 1 is drawn in the selected four cards?

Accepted Answer

$\frac{4}{6}$

Answer

$1-\frac{4}{6}$

Answer

$\frac{1}{24}$

Answer

$\frac{4}{10}$

Question 5

The present age of a father is square of the age of his son. After six years, the age of the father would be $3\frac{1}{2}$ times the age of the son. The present age of the father is

Accepted Answer

36

Answer

42

Answer

48

Answer

54

CSIR NET 2020 Chemical Science Prev. Yr. Paper (30-Nov-2020)

CSIR NET 2025 Mathematical Science Mock Test Series

CSIR UGC NET Physical Sciences 2024 Mock Test Series

CSIR UGC NET Life Sciences 2025 Mock Test Series

Grain	Single-grain density (g/cm³)	Bulk density (g/cm³)
Rice	1.13	0.56
Wheat	1.39	0.80
Millet	1.27	0.77
Maize	0.97	0.68