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The equilibrium state of a rectangular block of height H = 6.0 cm and density 900 kg/m*,
which floats in a liquid of density 1350 kg/m? is as shown in the figure.

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If the block is pushed downward so that it is fully submerged and then released,
what is the magnitude of its upward acceleration ?

A) 3.27 m/s? B) 4.90 m/s? ©) 9.80 m/s? D) 14.7 m/s?

Arjun had a dinner rated 1000 kilocalorie. He wishes to do an equivalent amount
of work in the gymnasium by lifting a 50 kg barbell. He can raise the barbell 2.0 m
each time he lifts it and he regains no energy when he drops it. How many times
must he raise the barbell to expend this much energy ?

A) 240 B) 1020 C) 2100 D) 4200

A sky diver jumps out of a hovering helicopter. A few seconds later, another sky
diver jumps out and they both fall along the same vertical line. Ignore air resistance,
so that both sky divers fall with the same acceleration. Which among the following
statements is/are correct ?

i. The difference in their speeds remains the same throughout the fall.
ii. The vertical distance between the divers stays the same throughout the fall.
iii. The first jumper always has a greater speed than the second.
A) Only iii is correct 8) Only i and ii are correct
C) Only iand iii are correct D) Only ii and iii are correct
In the March 2022, the quadrupole mass spectrometer CHASE -— 2 onboard the

Chandrayaan-2 mission observed the global distribution of Argon — 40 in the lunar
exosphere. What does CHASE — 2 stand for ?

A) Chandra’s Atmospheric Composition Explorer — 2

B) Chandra’s Altitudinal Characteristics Explorer — 2

C) Chandrayaan Altitudinal Characteristics Explorer — 2
D) Chandrayaan Altitudinal Composition Examiner - 2

Which shape is associated with the orbital designated by n = 2, |= 1?
A) Spherical B) Tetrahedral C) Dumb-bell D) Pyramidal

The azeotropic mixture of HCI and H,O is

A) 36.6% HCl 8) 20.24% HCI C) 48.2% HCl ம) 57% HCl
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