CSIR NET 2022 Mathematical Science Question Paper (16-Sep-2022)

Question 1

In a test with multiple choice questions, candidates get 4 marks for a correct answer and lose 1 mark for an incorrect answer. Two candidates A and B attempting 18 and 13 questions, respectively, secure equal marks. How many more INCORRECT answers does A have compared to B?

Accepted Answer

4

Answer

3

Answer

5

Answer

6

Question 2

A ranks 10th from both the top and the bottom in merit among the girls in her class. B ranks 6th from the top and 16th from the bottom among boys in the same class. If A is immediately ahead of B in merit order, her rank in the entire class would be

Accepted Answer

15th from the top and 26th from the bottom

Answer

16th from the top and 26th from the bottom

Answer

15th from the top and 27th from the bottom

Answer

16th from the top and 27th from the bottom

Question 3

Given figure represents pH, partial pressure of CO$_2$ (pCO$_2$), and temperature (T) in an experiment conducted in a water sample over 20 days. Which of the following statements can definitely be made based on this experiment?

Accepted Answer

There is a decrease in pH and an increase in both T and pCO$_2$ over 20 days.

Answer

High CO$_2$ causes global warming.

Answer

High temperature causes acidification.

Answer

pH and pCO$_2$ are positively correlated while pH and T are inversely correlated.

Question 4

A 360 ml aqueous solution contains 40% alcohol. How much will be the approximate percentage of alcohol if 3600 ml of water is added to the solution?

Accepted Answer

3.6

Answer

2.6

Answer

4

Answer

1

Question 5

A set of 27 similar looking coins has 26 identical coins and one dummy coin having less weight. What is the minimum number of weighings that will ensure identification of the dummy coin using a two-pan balance?

Accepted Answer

4

Answer

3

Answer

5

Answer

6

CSIR NET 2022 Mathematical Science Question Paper (16-Sep-2022)

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