Polymers

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New answer posted•a year ago

Polymers Class 12th

Kindly consider the following

Monomer of orlon is

1 Views|Posted a year ago

Asked by Alok Kumar Singh

Answered by

Alok Kumar Singh | Contributor-Level 10

a year ago

Monomer of orlon is acrylonitrile

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New answer posted•a year ago

Polymers Class 12th

Identify the incorrect statement.

2 Views|Posted a year ago

Asked by Vishal Baghel

Answered by

Vishal Baghel | Contributor-Level 10

a year ago

High density polythene is chemically inert

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New answer posted•a year ago

Polymers Class 12th

Monomer of Nylon-6 is

3 Views|Posted a year ago

Asked by Alok Kumar Singh

Answered by

Alok Kumar Singh | Contributor-Level 10

a year ago

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New answer posted•a year ago

Polymers Class 12th

Which among the following carboxylic acids has the highest pK_a value?

2 Views|Posted a year ago

Asked by Vishal Baghel

Answered by

Vishal Baghel | Contributor-Level 10

a year ago

Higher the acidic strength, lower will be the value of pK_a.

Correct order of pK_a is

$C H_{3} C O O H > C_{6} H_{5} C O O H > H C O O H > O_{2} N C H_{2} C O O H$

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New answer posted•a year ago

Polymers Class 12th

Kindly go through the questions

Monomer of orlon is

1 Views|Posted a year ago

Asked by Vishal Baghel

Answered by

Vishal Baghel | Contributor-Level 10

a year ago

Monomer of orlon is acrylonitrile CN

Upvote

New question posted•a year ago

Polymers Class 12th

<p><strong>Kindly go through the questions</strong></p> <p><strong>Monomer of orlon is</strong></p> <div class="photo-widget-full"> <div class="figure"><picture><source srcset="" media="(max-width: 500px)"><img src="https://images.shiksha.com/mediadata/images/1758188700phpRvXlo1.jpeg" alt="" width="418" height="111" loading="lazy"></picture></div> </div>

3 Views|Posted a year ago

Asked by Vishal Baghel

New answer posted•a year ago

Polymers Class 12th

Le tf(x) be a polynomial of degree 6 in x, in which the coefficient of x⁶ is unity and it has extrema at x = -1 and x = 1. If $\underset{x \to 0}{l i m} \frac{f (x)}{x^{3}} = 1,$ then 5 f(2) is equal to……………….

3 Views|Posted a year ago

Asked by Vishal Baghel

Answered by

Vishal Baghel | Contributor-Level 10

a year ago

Let f (x) = x⁶ + ax⁵ + bx⁴ + ax³ + dx² + ex + f

$\underset{x \to 0}{l i m} \frac{f (x)}{x^{3}} = 1$ Non zero finite

So, d = e = f = 0

f (x) = x⁶ + ax⁵ + bx⁴ + cx³

$\underset{x \to 0}{l i m} \frac{f (x)}{x^{3}} = 1$ Non zero finite

f’ (x) = $6 x^{5} + 5 a x^{4} + 4 b x^{3} + 3 x^{2}$

f’ (1) = 0

6 + 5a + 4b + 3 = 0

5a + 4b = - 9 . (i)

f’ (-1) = 0

-6 + 5a – 4b + 3 = 0 . (ii)

Solving (i) and (ii)

a -3/5, b = -3/2

$∴ f (x) = x^{6} + (\frac{- 3}{5}) x^{5} + (\frac{- 3}{2}) x^{4} + x^{3}$

$∴ 5 . f (2) = 144$

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New answer posted•a year ago

Polymers Class 12th

Match List with List II.

List I                                                                                  List II

(Monomer Unit)                                                             (Polymer)

(a) Caprolactum                                                             (i) Natural rubber

(b) 2-Chloro-1, 3-butadiene                                         (ii) Buna-N

(c) Isoprene                                                                    (iii) Nylon 6

(d) Acrylonitrile                                                              (iv) Neoprene

Choose the correct answer from the options given below:

3 Views|Posted a year ago

Asked by Vishal Baghel

Answered by

Vishal Baghel | Contributor-Level 10

a year ago

Kindly consider the following figure

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New answer posted•a year ago

Polymers Class 12th

Let f(x) and g(x) be two real polynomials of degree 2 and 1 respectively. If $f (g (x)) = 8 x^{2} - 2 x,$ and $g (f (x)) = 4 x^{2} + 6 x + 1,$ then the value of f(2) + g(2) is…………….

3 Views|Posted a year ago

Asked by Vishal Baghel

Answered by

Vishal Baghel | Contributor-Level 10

a year ago

$f (x) = a x^{2} + b x + c$

g (x) = px + q

$f (g (x)) = a {(p x + q)}^{2} + b (p) (+ q) + c$

$? 8 x^{2} ? 2 x = a {(p x + q)}^{2} + b (p x + q) + c$

Compare 8 = ap² …………… (i)

-2 = a (2pq) + bp

0 = aq² + bq + c

$9 (f (x)) = p (a x^{2} + b x + c) + q$

=>4x² + 6x + 1 = apx² + bpx + cp + q

=> Andhra Pradesh = 4 ……………. (ii)

6 = bp

1 = cp + q

From (i) & (ii), p = 2, q = -1

=> b = 3, c = 1, a = 2

f (x) = 2x² + 3x + 1

f (2) = 8 + 6 + 1 = 15

g (x) = 2x – 1

g (2) = 3

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New answer posted•a year ago

Polymers Class 12th

Given below are two statements : one is labelled as Assertion A and the other is labelled as Reason R.

Assertion A : Dacron is an example of polyester polymer.

Reason R : Dacron is made up of ethylene glycol and terephthalic acid monomers.

In the light of the above statements, choose the most appropriate answer from the options given below.

2 Views|Posted a year ago

Asked by Vishal Baghel

Answered by

Vishal Baghel | Contributor-Level 10

a year ago

Kindly consider the following figure

Upvote

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