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7 months ago

NCERT Solutions Ncert Solutions Maths class 11th

2. Kindly Consider the following a_n= $\frac{n}{n + 1}$

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Payal Gupta

Contributor-Level 10

2. Here, a₁= $\frac{n}{n + 1}$

Substituting n=1,2,3,4,5 we get,

$a_{1} = \frac{1}{1 + 1} = \frac{1}{2}$

$a_{2} = \frac{2}{2 + 1} = \frac{2}{3}$

$a_{3} = \frac{3}{3 + 1} = \frac{3}{4}$

$a_{4} = \frac{4}{4 + 1} = \frac{4}{5}$

$a_{5} = \frac{5}{5 + 1} = \frac{5}{6}$ .

Hence the first five terns are $\frac{1}{2}, \frac{2}{3}, \frac{3}{4}, \frac{4}{5}$ and $\frac{5}{6}$ .

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NCERT Solutions Ncert Solutions Maths class 11th

1. If $(\frac{x}{3} + 1, y - \frac{2}{3}) = (\frac{5}{3}, \frac{1}{3})$ , find the values of x and y.

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Payal Gupta

Contributor-Level 10

1. Since the ordered pairs are equal, the corresponding elements are equal.

$∴ \frac{x}{3} + 1 = \frac{5}{3} .$ and $y - \frac{2}{3} = \frac{1}{3}$

$\frac{x}{3} = \frac{5}{3} - 1$ $y = \frac{1}{3} + \frac{2}{3}$

$\Rightarrow \frac{x}{3} = \frac{5 - 3}{3}$ $\Rightarrow y = \frac{1 + 2}{3}$

$\Rightarrow \frac{x}{3} = \frac{2}{3}$ $\Rightarrow y = \frac{3}{3}$

$\Rightarrow x = 2$ y = 1.

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NCERT Solutions Polymers

15.22 Identify the monomer in the following polymeric structures.

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alok kumar singh

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15.22 Kindly consider the following

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NCERT Solutions Polymers

15.21 Write the names and structures of the monomers of the following polymers: (i) Buna-S (ii) Buna-N (iii) Dacron (iv) Neoprene

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alok kumar singh

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15.17 Kindly consider the following

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NCERT Solutions Alcohols, Phenols and Ethers

11.7 Predict the major product of acid catalysed dehydration of (i) 1-methylcyclohexanol and (ii) Butan-1-ol

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alok kumar singh

Contributor-Level 10

Ans. Kindly consider the following

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NCERT Solutions Ncert Solutions Chemistry Class 11th

4.30. Which hybrid orbitals are used by carbon atoms in the following molecules?

(a) CH₃-CH₃ (b) CH₃-CH=CH₂ (c) CH₃-CH₂-OH (d) CH₃-CHO (e) CH₃COOH.

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Payal Gupta

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4.30. Kindly go through the solution

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NCERT Solutions Ncert Solutions Chemistry Class 11th

4.27. Draw diagrams showing the formation of a double bond and a triple bond between carbon atoms in C₂H₄ and C₂H₂molecules.

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Payal Gupta

Contributor-Level 10

Kindly go through the solution

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NCERT Solutions Ncert Solutions Chemistry Class 11th

4.20 The skeletal structure of CH₃COOH as shown below is correct, but some of the bonds are shown incorrectly. Write the correct Lewis structure for acetic acid.