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Daily NEET MCQ- July 2, 2022 - NEET MCQ


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10 Questions MCQ Test - Daily NEET MCQ- July 2, 2022

Daily NEET MCQ- July 2, 2022 for NEET 2024 is part of NEET preparation. The Daily NEET MCQ- July 2, 2022 questions and answers have been prepared according to the NEET exam syllabus.The Daily NEET MCQ- July 2, 2022 MCQs are made for NEET 2024 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Daily NEET MCQ- July 2, 2022 below.
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Daily NEET MCQ- July 2, 2022 - Question 1

A ring of radius 7cm is rotating about the central axis perpendicular to its plane. A force acts on it, tangentially, such that it does a work of 10J in a complete rotation. Find the value of that force.

Detailed Solution for Daily NEET MCQ- July 2, 2022 - Question 1

Let the force be ‘F’. Work done will be = Tθ,
where T is the torque & is the angular displacement = 2π rad.
Work = Tθ = 10
∴ T(2π) = 10
∴ T = 5/π Nm.
Also, T = r*F
∴ 5/π = 0.07*F
∴ F = 500/7π N.

Daily NEET MCQ- July 2, 2022 - Question 2

A disc of radius 10cm is rotating about the central axis perpendicular to its plane. A force of 5N acts on it tangentially. The disc was initially at rest. Calculate the value of power supplied by the force when the disc has rotated by 30°.The mass of the disc is 2kg.

Detailed Solution for Daily NEET MCQ- July 2, 2022 - Question 2

Work done = Tθ, where T is torque & θ is angular displacement.
T = r*F = 0.1*5 = 0.5Nm
& θ = 30° = π/6 rad.
∴ Work = 0.5*π/6 = π/12 J.
Moment of inertia about spinning axis = MR2/2 = 2*0.01/2 = 0.01kgm2.
Using, T = Ia, where ‘I’ is moment of inertia & ‘a’ is angular acceleration, we get:
a = T/I
∴ a = 0.5/0.01 = 50 rad/s2.
Now, θ = w0t + (1/2)at2 to calculate the time for 30° rotation, where wo is initial angular velocity.
∴ π/6 = 0 + 0.5*50*t2.
∴ t = √(π/150) = 0.145 s.
∴ Power = Work/time = (π/12) / (0.145) = 1.8 W.

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Daily NEET MCQ- July 2, 2022 - Question 3

A rigid body is rotating about an axis. One force F1 acts on the body such that its vector passes through the axis of rotation. Another force F2 acts on it such that it is perpendicular to the axis of rotation and at a point 5cm from the axis. This force F2 is perpendicular to the radius vector at its point of application. Find the net torque on the body. Let F1 = 10N & F2= 5N.

Detailed Solution for Daily NEET MCQ- July 2, 2022 - Question 3

The force F1 passes through the axis of rotation, so it will not produce a torque.
The force F2 is perpendicular to axis and radius, so it will provide a torque = r*F2 about the axis of rotation, where ‘r’ is the distance of point of application of force F2 from the axis of rotation.
Therefore, torque = r* F2= 0.05 * 5 Nm
= 0.25Nm.

Daily NEET MCQ- July 2, 2022 - Question 4

Urea’s dissolution is because of __________

Detailed Solution for Daily NEET MCQ- July 2, 2022 - Question 4

The dissolution of covalent compounds like urea, glucose, and ethanol is due to the tendency of these molecules to form a hydrogen bond with water. Urea’s dissolution as because of the hydrogen bond.

Daily NEET MCQ- July 2, 2022 - Question 5

Dielectric constant of water is ____________

Detailed Solution for Daily NEET MCQ- July 2, 2022 - Question 5

Water has a high dielectric constant and that is 78.39. The interaction of water with ionic substances is effective along with the release of energy in a noted quantity because of the Ion dipole interaction. This is applicable to the intercations with polar substances also.

Daily NEET MCQ- July 2, 2022 - Question 6

Water has a maximum density at _____ degree centigrade.

Detailed Solution for Daily NEET MCQ- July 2, 2022 - Question 6

Water has a maximum density at 4-degree centigrade, this is because at 4-degree centigrade, as opposite forces are in balance that is like the formation of Ice and maintaining of the liquid phase of water. Any less than 4-degree centigrade or greater than 4-degree centigrade, the water density is lesser than that of 4-degree centigrade.

Daily NEET MCQ- July 2, 2022 - Question 7

The word Chordata gets its origin from ________

Detailed Solution for Daily NEET MCQ- July 2, 2022 - Question 7

The word Chordata derives its origin from the Latin word Chordate which means those that posses’ chord. In most of the chordates spinal cord might gradually mature to form back bone.

Daily NEET MCQ- July 2, 2022 - Question 8

Salamander is an example of __________

Detailed Solution for Daily NEET MCQ- July 2, 2022 - Question 8

Salamander is an example of the phylum amphibia. Salamander can survive both in water and on land. They use their gills when inside water and they use lungs when on land. Their skin is moist.

Daily NEET MCQ- July 2, 2022 - Question 9

Scutes are also called as _____

Detailed Solution for Daily NEET MCQ- July 2, 2022 - Question 9

Scutes are also called scales. Reptiles are covered with scales and help them in movement and in respiration. Vipera, garden lizard, chelone, testudo, alligator and hemicydactylus are examples of scales.

Daily NEET MCQ- July 2, 2022 - Question 10

What does the word homoiothermous refer to?

Detailed Solution for Daily NEET MCQ- July 2, 2022 - Question 10

Homoiothermous are the warm blooded animals i.e. they can generate heat internally. Examples of the warm-blooded include aves and mammals and examples of cold blooded animals include reptiles and Pisces.

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