CSIR NET 2021 Earth Science Question Paper (29-Jan-2022)

Question 1

A $10	ext{ km}$ long and $1	ext{ m}$ wide sheet of thickness $0.1	ext{ mm}$ is rolled along the length parallel to its width forming a perfectly compact solid cylinder. The diameter of the cylinder in meter is approximately

Accepted Answer

$2/\pi^{1/2}$

Answer

1000/$\pi$

Answer

$1/\pi^{1/2}$

Answer

$(2\pi)^{1/2}$

Question 2

The digit at the unit's place of ($489^{86}$ - $351^{63}$) is

Accepted Answer

0

Answer

8

Answer

5

Answer

2

Question 3

The variation of $w$ against $x$ is shown in the figure for selected values of parameter $y$.The graph indicates that $w$

Accepted Answer

increases nonlinearly with $x$, but decreases nonlinearly with $y$.

Answer

increases linearly with $x$ and $y$.

Answer

increases nonlinearly with $x$, but linearly with $y$.

Answer

increases nonlinearly with $x$, but decreases linearly with $y$.

Question 4

Area of a circle which circumscribes a regular hexagon with side $a$ is

Accepted Answer

$\pi a^2$

Answer

$\frac{3\sqrt{3}}{2}a^2$

Answer

$6a^2$

Answer

$\frac{3\pi}{4}a^2$

Question 5

There are three fathers and six sons in a room. If every father's son(s) and every son's father are present, then the minimum number of individuals in the room are

Accepted Answer

7

Answer

5

Answer

8

Answer

9

CSIR NET 2021 Earth Science Question Paper (29-Jan-2022)

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