NEET Test 158

Result

NEET Test 158

Score
-
out of -
Rank
-
out of -

TIME Taken - -

SHARING IS CARING

If our Website helped you a little, then kindly spread our voice using Social Networks. Spread our word to your readers, friends, teachers, students & all those close ones who deserve to know what you know now.

Weekly Quiz Competition

Question 1
4 / -1

A particle of mass 𝑚 carrying charge +𝑞₁ is revolving around a fixed charge −𝑞₂ in a circular path of radius 𝑟. Calculate the period of revolution.

A

B

C

D
Zero

Solution

Since the particle carrying positive charge is revolving around another charge,

Electrostatic force = Centrifugal force
Question 2
4 / -1

A rod 𝐴𝐵 of mass 10 𝑘𝑔 and length 4 𝑚 rests on a horizontal floor with end 𝐴 fixed so as to rotate it in a vertical plane about the perpendicular axis passing through 𝐴. If the work done on the rod is 100𝐽, the height to which the end 𝐵 is raised vertically above the floor is

A
1.5 𝑚

B
2.0 𝑚

C
1.0 𝑚

D
2.5 𝑚

Solution
Question 3
4 / -1

The standard Gibbs free energy change and enthalpy change at 25^∘𝐶 for the liquid phase reaction 𝐶𝐻₃𝐶𝑂𝑂𝐻(𝑙) + 𝐶₂𝐻₅𝑂𝐻(𝑙) → 𝐶𝐻₃𝐶𝑂𝑂𝐶₂𝐻₅(𝑙) + 𝐻₂𝑂 ( l ) are given as 𝐴𝐺⁰ ags = −4650𝐽/𝑚𝑜𝑙 and Δ𝐻⁰₂₉₈= −3640 J/mol. If the solution is ideal and enthalpy change is assumed to be constant, then the equilibrium constant at 95^∘𝐶 is

A
0.65

B
4.94

C
6.54

D
8.65

Solution
Question 4
4 / -1

A

B

C

D

Solution
Question 5
4 / -1

A weightless bag is filled with 5 kg of water and then weighed in water. The reading of spring balance is:

A
5 kgf

B
2.5 kgf

C
1.25 kgf

D
Zero

Solution

Since the weight of the bag with water is equal to the weight of the water displaced, the spring balance reading is zero.

The spring balance is a type of balance (scales). It consists of a spring, one end of which is fixed and the other end is hung by a hook, whose weight is to be determined. It works on Hooke's law.
Question 6
4 / -1

A particle moves from position acts on it. What is the work done by the force?

A
110 𝐽

B
113 𝐽

C
80 𝐽

D
50 𝐽

Solution
Question 7
4 / -1

What is not applicable to ozone?

A
It is a bent molecule with bond angle approximately 117⁰

B
It has four lone pairs of electrons in one of its Lewis formula

C
The two O − O bond lengths are equal

D
It is an allotrope of oxygen.

Solution

Ozone is an allotrope of oxygen and it is a bent molecule with bond angle approximately 117^∘. it is having 6 lone pairs. In it O−O bond length are equal due to resonance.
Question 8
4 / -1

Which of the following species is not extinct?

A
Dodo

B
Lion-tailed Macaque

C
Quagga

D
Steller`s Sea Cow

Solution

Lion-tailed Macaques may be found at elevations of about 1500 metres in evergreen and semi-evergreen monsoon forests with broadleaf trees. Endemic to India, they are found in the Western Ghats in the South-West. Body Length – 46 to 61 cms. Weight – Males weigh between 9 to 11 kgs and females weigh between 7 to 8 kg. it's one of the endangered animals.
Question 9
4 / -1

A Carnot engine takes in 3000kcal of heat from a reservoir at 627^∘C and gives it to a sink at 27^∘C. The work done by the engine is:

A
8.4 × 10⁻⁶ J

B
8.4 × 10⁶ J

C
7.4 × 10⁶ J

D
7.4 × 10⁻⁶ J

Solution
Question 10
4 / -1

Consider the following statements.

1) First generation biofuels use oil seeds and non food agricultural crops as feedstock.

2) Second generation biofuels use anaerobic digestion and fermentation for conversion.

3) Microalgae are used as feedstock for third generation biofuels.

Which of the statements given above are correct?

A
1 and 2 only

B
2 and 3 only

C
1 and 3 only

D
1, 2 and 3

Solution

First generation biofuels use starch and sugars as feedstock. Therefore, 1 is incorrect.

Second generation biofuels use residues, energy crops, oil seeds, non-food agricultural crops as feedstock. It uses methods of anaerobic digestion, hydrolysis, fermentation and gasification. Therefore, 2 is correct.

Third generation biofuels use microalgae as feedstock. Therefore, 3 is correct.