# (Model Paper) CSIR-UGC NET Exam "General Aptitude"

## CSIR-UGC NET Exam Model Paper

## Subject: General Aptitude

### 1. A sphere of radius 4 cm is carved from a homogeneous sphere of radius 8 cm and mass 160 g. The mass of the smaller sphere is

1. 80 g.

2. 60 g.

3. 40 g.

4. 20 g.

### 2. Two boys A and B are at two diametrically opposite points on a circle. At one instant the two start running on the circle; A anticlockwise with constant speed v and B clockwise with constant speed 2v. In 2 minutes, they pass each other for the first time. How much later will they pass each other for the second time?

1. 1 minute

2. 2 minutes

3. 3 minutes

4. 4 minutes

### 3. There are k baskets and n balls. The balls are put into the baskets randomly. If k<n,

1. There is no empty basket

2. There are exactly (n- k) baskets with at least one ball

3. There is at least one basket with two or more balls

4. There are (n- k) baskets with exactly two balls

### 4. An ant is crawling along the x-axis such that the graph of its position on the x-axis versus time is a semi-circle (see figure). The total distance covered in the 4 s is

### 5. In a bag containing only blue, red and green marbles, all but 15 are blue, all but 13 are red and all but 12 are green. How many are red?

1. 13

2. 7

3. 25

4. 20

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