NEET Test 163

Result

NEET Test 163

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Weekly Quiz Competition

Question 1
4 / -1

Observe the diagram and identify the labelled parts.

A

B

C

D

Solution
Question 2
4 / -1

Direction: In the given figure, a hollow spherical capacitor is shown. The electric field will not be zero at

A

B

C

D

Solution

The electric field of a hollow spherical capacitor is localized in between the inner and outer surfaces of the spherical conductor. Therefore, at point r₁ < r < r₂, the electric field will not be zero.
Question 3
4 / -1

A nucleus at rest splits into two nuclear parts having radii in the ratio 1 : 2. Their velocities are in the ratio:

A
8 : 1

B
6 : 1

C
4 : 1

D
2 : 1

Solution
Question 4
4 / -1

Hydrogen bonding plays an important role in the physical properties of compounds. Which among the following shows intramolecular hydrogen bonding?

A
H₂O

B
o-Nitrophenol

C
p-Nitrophenol

D
o-Chlorophenol

Solution

The hydrogen bonding which takes place within a molecule itself is called intramolecular hydrogen bonding. It takes place in compounds containing two groups such that one group contains a hydrogen atom linked to an electronegative atom and the other group contains a highly electronegative atom linked to a lesser electronegative atom of the other group.

The bond is formed between the hydrogen atoms of one group with the more electronegative atom of the other group.

o-Nitrophenol shows intramolecular hydrogen bonding.
Question 5
4 / -1

Drupes develop from:

A
Monocarpellary superior ovaries

B
Monocarpellary inferior ovaries

C
Bicarpellary superior ovaries

D
Bicarpellary inferior ovaries

Solution

In mango and coconut, the fruit is known as a drupe. They develop from monocarpellary superior ovaries and are one-seeded. In mango, the pericarp is well-differentiated into an outer thin epicarp, a middle fleshy edible mesocarp and an inner stony hard endocarp. In coconut which is also a drupe, the mesocarp is fibrous.
Question 6
4 / -1

An object of mass 10 kg is attached to the roof by string whirled around a horizontal circle of radius 4 m and inclined 30^∘ to the vertical. The tension in the string (approximately) is

A
720 N

B
960 N

C
114 N

D
125 N

Solution
Question 7
4 / -1

In a thermodynamic process, 200 J of heat is given to gas and 100 J of work is also done on it. The change in internal energy of the gas is:

A
100 J

B
500 J

C
600 J

D
700 J

Solution

According to the First law of thermodynamics, the total heat interaction of the system is equal to the sum of total work done by the system and the change in internal energy.

ΔU=Q−W

Q=200 J

W=100 J

∴ ΔU=(200−100) J=100 J
Question 8
4 / -1

Incomplete metamorphosis is observed in

A
Butterfly

B
Dragonfly

C
Damselfly

D
Both damselfly and dragonfly

Solution

Dragonflies and damselfly undergo incomplete metamorphosis; unlike other winged insects, such as butterflies do not have a pupal stage and transition straight from a larva to an adult.
Question 9
4 / -1

Cryopreservation of gametes of threatened species in viable and fertile condition can be referred to as:

A
In situ conservation of biodiversity

B
Advanced ex-situ conservation of biodiversity

C
In situ conservation by sacred groves

D
In situ cryo-conservation of biodiversity

Solution

Cryopreservation of gametes of threatened species in viable and fertile conditions can be referred to as advanced ex-situ conservation of biodiversity because these gametes are stored in liquid nitrogen at a −196^∘C temperature of about.
Question 10
4 / -1

If a Zn²⁺ / Zn electrode is diluted 100 times, then the emf will show:

A
An increase of 59 mV

B
A decrease of 59 mV

C
An increase of 29.5 mV

D
A decrease of 29.5 mV

Solution