Tags Chemistry NCERT Exemplar Solutions Class 12th Chapter Five

Chemistry NCERT Exemplar Solutions Class 12th Chapter Five

Get insights from 126 questions on Chemistry NCERT Exemplar Solutions Class 12th Chapter Five, answered by students, alumni, and experts. You may also ask and answer any question you like about Chemistry NCERT Exemplar Solutions Class 12th Chapter Five

Follow Ask Question

126

Questions

Discussions

Active Users

Followers

New answer posted

2 months ago

Chemistry NCERT Exemplar Solutions Class 12th Chapter Five Class 12th

Let f(x) be a polynomial of degree 3 such that f(k) = $- \frac{2}{k}$ for k = 2, 3, 4, 5. Then the value of 52 – 10 f(10) is equal to________.

0 Follower 2 Views

alok kumar singh

Contributor-Level 10

xf (x) + 2 = $λ$ (x – 2) (x – 3) (x – 4) (x – 5)

$x = 0 \Rightarrow λ = \frac{1}{60}$

x = 10 -> 10f (10) = 26

0 0

New answer posted

2 months ago

Chemistry NCERT Exemplar Solutions Class 12th Chapter Five Class 11th

All the arrangements, with or without meaning, of the word FARMER are written excluding any word that has two R appearing together. The arrangements are listed serially in the alphabetic order as in the English dictionary. Then the serial number of the word FARMER in this list is________.

0 Follower 2 Views

alok kumar singh

Contributor-Level 10

0 0

New answer posted

2 months ago

Chemistry NCERT Exemplar Solutions Class 12th Chapter Five Relations and Functions

Let [t] denote the greatest integer $\leq t .$ The number of points where the function f(x) = $[x] | x^{2} - 1 |$ + sin $(\frac{π}{[x] + 3}) - [x + 1], x \in (- 2, 2)$ is not continuous is__________.

0 Follower 2 Views

alok kumar singh

Contributor-Level 10

$f (x) = {\begin{cases} - 2 x^{2} + 3, - 2 < x < - 1 \\ x^{2}, - 1 \leq x < 0 \\ \frac{\sqrt[]{3}}{2} - 1, 0 \leq x < 1 \\ x^{2} - 3 + \frac{1}{\sqrt[]{2}}, 1 \leq x < 2 \end{cases}$

$f (- 1^{-}) = f (- 1^{+}) = f (- 1) = 1$

$f (1^{+}) = f (1) = \frac{1}{\sqrt[]{2}} - 2$

Points of discontinuity

x = 0, 1

0 0

New answer posted

2 months ago

Chemistry NCERT Exemplar Solutions Class 12th Chapter Five Class 12th

Let $\vec{a} = 2 \hat{i} - \hat{j} + 2 \hat{k} a n d \vec{b} = \hat{i} + 2 \hat{j} - \hat{k} .$ Let a vector $\vec{v}$ be in the plane containing $\vec{a} a n d \vec{b} .$ If $\vec{v}$ is perpendicular to the vector $3 \hat{i} + 2 \hat{j} - \hat{k}$ and its projection on $\vec{a}$ is 19 units, then ${| 2 \vec{v} |}^{2}$ is equal to_________.

0 Follower 3 Views

alok kumar singh

Contributor-Level 10

$\vec{v} = l \vec{a} + m \vec{b}$

$= (2 l + m, - l + 2 m, 2 l = m)$

$\vec{v} . (3, 2, - 1) = 0 \Rightarrow l = - 4 m . . . . . . . (i)$

$| \vec{v} . \hat{a} | = 19 \Rightarrow 9 l - 2 m = 57 . . . . . . . . (i i)$

(i) & (ii) Þ l = 6, m = $\frac{- 3}{2}$

$\Rightarrow 2 \vec{v} = (21, - 18, 27)$

${| 2 \vec{v} |}^{2} = 1494$

0 0

New answer posted

2 months ago

Chemistry NCERT Exemplar Solutions Class 12th Chapter Five Class 12th

Let f(x) = $x^{6} + 2 x^{4} + x^{3} + 2 x + 3, x \in R .$ Then the natural number n for which $\underset{x \to 1}{l i m} \frac{x^{n} f (1) - f (x)}{x - 1} = 44$ is_________.

0 Follower 2 Views

alok kumar singh

Contributor-Level 10

$\underset{x \to 1}{l i m} \frac{x^{n} f (1) - f (x)}{x - 1}$

$= \underset{x \to 1}{l i m} \frac{9 x^{n} - (x^{6} + 2 x^{4} + x^{3} + 2 x + 3)}{x - 1}$

= 9n – 19 = 44 -> n = 7

0 0

New answer posted

2 months ago

Chemistry NCERT Exemplar Solutions Class 12th Chapter Five Surface Chemistry

Which of the following is a correct statements?

0 Follower 2 Views

alok kumar singh

Contributor-Level 10

Due to equal and similar charge particle will repel each other, hence will never precipitate

0 0

New answer posted

2 months ago

Chemistry NCERT Exemplar Solutions Class 12th Chapter Five Surface Chemistry

Which of the following is a correct statements?

(a) Brownian motion destabilizes sols

(b) Any amount of dispersed phase can be added to emulsion without establishing it.

(c) Mixing two oppositely charged sols in equal amount neutralizes charges and stabilizes colloids.

(d) Presence of equal and similar charges on colloidal particles provides stability to the colloidal solution.

0 Follower 1 View

alok kumar singh

Contributor-Level 10

Due to equal and similar charge particle will repel each other, hence will never precipitate.

0 0

New answer posted

2 months ago

Chemistry NCERT Exemplar Solutions Class 12th Chapter Five Chemistry NCERT Exemplar Solutions Class 12th Chapter Seven

The solubility of AgCl will be maximum in which of the following?

0 Follower 1 View

alok kumar singh

Contributor-Level 10

Due to common ion effect solubility of AgCl will decreases in KCl, AgCl and AgNO₃ but in deionized water, no common ion effect will takes place so maximum solubility.

0 0

New answer posted

2 months ago

Chemistry NCERT Exemplar Solutions Class 12th Chapter Five Chemistry Chemical Bonding and Molecular Structure

Arrange the following in the decreasing order of their covalent character:

(A) LiCl
(B) NaCl

(C) KCl

(D) CsCl

Choose the most appropriate answer from the options given below:

0 Follower 2 Views

alok kumar singh

Contributor-Level 10

Covalent character is $L i C l > N a C l > K C l > C s C l .$ As the cationic size increases polarization decreases.

0 0

New answer posted

2 months ago

Chemistry NCERT Exemplar Solutions Class 12th Chapter Five Structure of Atom

Which of the following statements are correct?

(A) The electronic configuration of Cr is [Ar] 3d⁵4s¹.

(B) The magnetic quantum number may a negative value.

(D) The total number of nodes are given by (n-2)

Choose the most appropriate answer

...more

0 Follower 2 Views

alok kumar singh

Contributor-Level 10

(A) Cr = [Ar]3d⁵4s¹

(B) m = $- l t o + l$

(D) Total nodes = n – 1

0 0

Get authentic answers from experts, students and alumni that you won't find anywhere else

On Shiksha, get access to

65k Colleges
1.2k Exams
687k Reviews
1800k Answers

Community GuidelinesUser Points System

QuestionsDiscussionsTags

Need guidance on career and education? Ask our experts

Your Question

Chemistry NCERT Exemplar Solutions Class 12th Chapter Five

Questions

Discussions

Active Users

Followers

All

Discussions

Unanswered Questions

Share Your College Life Experience