JEE Main Test 22

Result

JEE Main Test 22

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Weekly Quiz Competition

Question 1
4 / -1

In the middle of the depletion layer of a reverse-biased p-n junction, the

A
electric field is zero

B
potential is maximum

C
electric field is maximum

D
potential is zero

Solution

In the middle of the depletion layer of a reverse-biased p-n junction, the electric field is zero (E = 0).
Hence, option A is correct.
Question 2
4 / -1

This question has statement 1 and statement 2. Of the four choices, choose the one that best describes the two statements.

If two springs S₁ and S₂ of force constant k₁ and k₂, respectively, are stretched by the same force, it is found that more work is done on spring S₁ than on spring S₂.
Statement 1: If stretched by the same amount, work does on S₁ will be more than that on S₂.
Statement 2: k₁ < k₂

A
Statement 1 is false, Statement 2 is true

B
Statement 1 is true, Statement 2 is false

C
Statement 1 is true, Statement 2 is the correct explanation for statement 1

D
Statement 1 is true, Statement is true, Statement 2 is not the correct explanation for statement 1.

Solution

Given, F = K₁x₁ = K₂x₂
As we know, W₁ = Fx₁, W₂ = Fx₂
Given, K_1x₁² > K₂x₂²
So, x₁ > x₂
Therefore, K₁ < K₂

So, statement 2 is correct.
W ∝ K

Hence, the work done in the spring 1 will be less if both are stretched by an equal amount.
W₁ < W₂
Hence, option A is correct.
Question 3
4 / -1

Which one is classified as a condensation polymer?

A
Teflon

B
Acrylonitrile

C
Dacron

D
Neoprene

Solution

Teflon, Acrylonitrile and Neoprene are addition polymers while Dacron is a condensation polymer
Hence, option C is correct.
Question 4
4 / -1

Which among the following is the most reactive?

A
Cl₂

B
Br₂

C
I₂

D
ICl

Solution

In general, interhalogen compounds are more reactive than halogens except fluorine (as per NCERT)
Hence, option D is correct