CSIR NET 2020 Physical Science Prev. Yr. Paper (19-Nov-2020)

Question 1

A couple lives in a house with their sons and daughters and no one else. The couple has four sons and each of the sons has exactly two sisters. How many persons live in that house?

Accepted Answer

8

Answer

10

Answer

12

Answer

14

Question 2

A bank pays interest to its depositors compounded yearly. If a deposit becomes Rs. 54,000/- at the end of 3 rd year and Rs. 64,800/- at the end of 6 th  year, what is the principal invested in the deposit?

Accepted Answer

45,000

Answer

40,000

Answer

42,500

Answer

48,000

Question 3

In the following &Delta;ABC, AB = 7 cm, BC = 15 cm and AC = 12 cm. D is a point on BC such that &Delta;ADC and &Delta;ABC are similar. Then AD (in cm) =

Accepted Answer

5.6

Answer

5.8

Answer

6.1

Answer

6.4

Question 4

Ten glass vases were to be packed one each in 10 boxes marked "Glass". Twelve brass vases were to be packed one each in 12 boxes marked "Brass". Four vases and boxes got mixed up. A customer orders 1 glass and 1 brass vase and is sent appropriately marked boxes. The chance that the customer does not get the ordered vases in correctly marked boxes is

Accepted Answer

1/3

Answer

4/5

Answer

5/6

Answer

2/3

Question 5

Anwara, Bharati, Colin and Tarun commute by different modes of transport namely, Cycle (C), Autorickshaw (A), Bus (B) and Train (T). The initials of the mode of transport and the name of the person match in exactly two cases. If Tarun travels by Train, and Colin rides neither an Autorickshaw nor a Bus, then

Accepted Answer

Anwara rides a Bus.

Answer

Anwara rides an Autorickshaw.

Answer

Bharati rides a Bus.

Answer

Bharati rides a Cycle.

CSIR NET 2020 Physical Science Prev. Yr. Paper (19-Nov-2020)

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