CSIR NET 2023 Earth Science Question Paper (08-Jun-2023)

Question 1

When a student in Section A who scored 100 marks in a subject is exchanged for a student in Section B who scored 0 marks, the average marks of the Section A falls by 4, while that of Section B increases by 5. Which of the following statements is true?

Accepted Answer

A has 5 more students than B

Answer

A has the same strength as B

Answer

B has 5 more students than A

Answer

The relative strengths of the classes cannot be assessed from the data

Question 2

Which of the numbers A = 162³ + 327³ and B = 612³ - 123³ is divisible by 489?

Accepted Answer

Both A and B

Answer

A but not B

Answer

B but not A

Answer

Neither A nor B

Question 3

At a spot S en-route, the speed of a bus was reduced by 20% resulting in a delay of 45 minutes. Instead, if the speed were reduced at 60 km after S, it would have been delayed by 30 minutes. The original speed, in km/h, was

Accepted Answer

60

Answer

90

Answer

80

Answer

70

Question 4

Three consecutive integers a, b, c, add to 15. Then the value of (a - 2)² + (b-2)²+(c-2)² would be

Accepted Answer

29

Answer

25

Answer

27

Answer

31

Question 5

A 50 litre mixture of paint is made of green, blue, and red colours in the ratio 5 : 3 : 2. If another 10 litre of red colour is added to the mixture, what will be the new ratio?

Accepted Answer

5:3:4

Answer

5:2:4

Answer

4:3:2

Answer

2:3:5

CSIR NET 2023 Earth Science Question Paper (08-Jun-2023)

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