CSIR NET 2025 Life Sciences Question Paper (28 Jul, 2025)

Question 1

On a spherical balloon of 10 cm radius, a circular colour patch has an area of 25 cm². If the balloon is uniformly expanded to a sphere of 50 cm radius, the area of the colour patch in cm² would be

Accepted Answer

625

Answer

125

Answer

50

Answer

500

Question 2

Average age of 20 students of a class is 10 years. Average age of these students together with their five teachers is 14. The age of Ramesh Sir, one of their five teachers, is exactly the same as the average age of all their five teachers. The sum of the ages (in years) of all the students and Ramesh Sir is

Accepted Answer

230

Answer

214

Answer

224

Answer

241

Question 3

A pilgrim starts walking for a journey of 115 km. On the first day he covers 7 km, the next day 9 km, and likewise keeps adding 2 km everyday till he reaches 15 km per day which he maintains for the rest of the journey. How many days in all will he take to complete the journey?

Accepted Answer

8

Answer

7

Answer

9

Answer

10

Question 4

A 2 cm wide wooden strip is to be fixed on a photo of 40 cm x 30 cm size all along its four sides. What is the minimum length of the wooden strip required?

Accepted Answer

132 cm

Answer

124 cm

Answer

128 cm

Answer

140 cm

Question 5

The population of a town over the years 2000-2007 is shown in the given figure.It can be inferred that during 2000-2007,

Accepted Answer

the rate of increase of the rate of increase of the population increased linearly

Answer

the population increased linearly

Answer

the rate of increase of the population increased linearly

Answer

the population increased exponentially

CSIR NET 2025 Life Sciences Question Paper (28 Jul, 2025)

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