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This is a multiple choice answer as classified in NCERT Exemplar

Correct option is (iii) and (iv)

The P₄ molecule in white phosphorus has an angular strain, white phosphorus is very reactive.

PCl₅ is ionic in the solid state, with a tetrahedral cation and an octahedral anion.

Asarfi Educational Foundation does not accept any entrance exam for admission to BCA programme. The college offers direct admission to students who fulfill the basic educational requirements of the programme. 

This is a Short Answer Type Question as classified in NCERT Exemplar

Sol:

Given that, g = { (1, 1), (2, 3), (3, 5), (4, 7)}.

Here, each element of domain has unique image. So, g is a function.

Now given that, g (x ) = $\alpha$ x + $\beta$

For (1,1) g (1) = $\alpha$ + $\beta$

$\alpha$ + $\beta$ = 1… (i)

For (2,3)   g (2) = 2 $\alpha$ + $\beta$

2 $\alpha$ + $\beta$ = 3 … (ii)

From Equations. (i) and (ii),

2 (1 - $\beta$ ) + $\beta$ = 3

2 - 2 $\beta$ + $\beta$ = 3

2 - $\beta$ = 3

$\beta$ = - 1

If $\beta$ = - 1, then $\alpha$ = 2

$\therefore$ $\alpha$ = 2,  $\beta$ = - 1

This is a multiple choice answer as classified in NCERT Exemplar

Correct option is (i) and (iii)

SO₂ is employed as an antichlor, disinfectant, and preservative in the bleaching of wool and silk.

The mode of PCSTI course admissions is online. Admission to various courses such as Diploma is based on merit and other criteria decided by the college. Candidates willing to get admission must first visit the official website. Then, click on the Apply Now tab. Then, select the required course. Then, pay the application fee. Then, fill out and submit the application form with the required information. Apply as soon as the admission window opens.

This is a multiple choice answer as classified in NCERT Exemplar

Correct option is (i)

Due to its high electronegativity and tiny size, F is the only interhalogen with weaker X-X’ bonds and no X-X bonds.

The admission process for Asarfi Educational Foundation is consists of mainly three rounds. 

1. Application Process: The application process at Asarfi Educational Foundation is conducted in online mode only. Students can enroll for the programme on the official website of Asarfi Educational Foundation for admission to the UG programme.
2. Selection Rounds: Asarfi Educational Foundation admission is entirely merit-based. Those students are offered direct admission who passed Class 12 with minimum 50% aggregate from a recognised board.
3. Final Admission: At last, the qualified students must pay for the course fee to confirm admission.

Sant Baba Bhag Singh University admit candidates in its MBA course based on merit. The candidates performance in the last qualifying exam is considered for selection. Thus, the applicants merit in the bachelor's degree course is evaluated. It is also necessary that the aspirants meet the eligibility requirements. Aspirants with a valid bachelor's degree with at least 50% aggregate are eligible for admission.

This is a multiple choice answer as classified in NCERT Exemplar

Correct option is (ii) and (iv)

Tetrahedral geometry characterises the structure of a white phosphorus molecule.

Phosphorus has a valency of 5, and there are four phosphorus atoms in total. As a result, there will be a total of 4×5=20 valence electrons.

As a result, each P atom will have one lone pair of electrons, and each covalent bond (two electrons) will be established.

In a molecule of white phosphorus, there will be four lone pairs of electrons and six P-P single bonds in total.

The table below shows the BDes in Fashion Designing colleges in Noida along with their tuition fees:

Disclaimer: This information is sourced from official website and may vary.

This is a Short Answer Type Question as classified in NCERT Exemplar

Sol:

$\begin{array}{l}Given that\hfill \end{array}$$\hfill$$\begin{array}{l}f(x)=x^2- 3x+ 2\hfill \end{array}$ $\begin{array}{ll}f\left\{f(x)\right\} =f\left(x^2-3x+2\right)\hfill & \hfill \end{array}$

$\begin{array}{ll}= {\left(x^2-3x+2\right)}^2- 3\left(x^2-3x+2\right) + 2\hfill & \hfill \end{array}$

$\begin{array}{ll}=x^4+ 9x^2+ 4 - 6x^3- 12x+ 4x^2- 3x^2+ 9x- 6 + 2\hfill & \hfill \end{array}$

$\begin{array}{l}=x^4+ 10x^2- 6x^3- 3x\hfill \end{array}$

$\begin{array}{l}Hence f\left\{f(x)\right\} =x^4- 6x^3+ 10x^2- 3x\hfill \end{array}$

Yes, admissions are open at PCSTI. The mode of PCSTI course admissions is online. Admission to various courses is based on merit and other criteria decided by the college. Candidates willing to get admission must first visit the official website. Then, click on the Apply Now tab. Then, select the required course. Then, pay the application fee. Then, fill out and submit the application form with the required information. Apply as soon as the admission window opens.

No, Asarfi Educational Foundation does not accept any entrance exam for admission to UG courses. However, some colleges or universities may accept entrance exam for admission to UG level BCA course. Students may cross-check for more details around Asarfi Educational Foundation courses.

This is a multiple choice answer as classified in NCERT Exemplar

Correct option is (ii), (iii)

MI  >  MBr  >  MCl  >  MF is an iconic character of metal halide

F₂ >  Cl₂ >  Br₂ > I₂ is a bond dissociation enthalpy

This is a Short Answer Type Question as classified in NCERT Exemplar

Sol:

$\begin{array}{l}Given that, A = \left\{a,b,c,d\right\}\hfill \end{array}$

$\begin{array}{l}and f = \left\{\left(a,b\right),\left(b,d\right),\left(c,a\right),\left(d,c\right)\right\}\hfill \end{array}$

$\begin{array}{l}{f}^{-1}= \left\{\left(b,a\right),\left(d,b\right),\left(a,c\right),\left(c,d\right)\right\}\hfill \end{array}$

Yes, there are many private Fashion Designing colleges in Noida. Some of them are mentioned below along with their tuition fees:

Disclaimer: This information is sourced from official website and may vary.

This is a Short Answer Type Question as classified in NCERT Exemplar

Sol:

$\begin{array}{l}\begin{array}{l}f\left(x\right) = 2x - 3\hfill \end{array}\end{array}$

$\begin{array}{l}\begin{array}{l}Let f\left(x\right)= y = 2x – 3\hfill \end{array}\\ \Rightarrow y+3=2x\Rightarrow x=\frac{y\text{?}+3}{2}\\ \therefore f^{-1}(y)=\frac{y+3}{2}0r{f}^{-1}(x)=\frac{x+3}{2}\end{array}$

This is a multiple choice answer as classified in NCERT Exemplar

Correct option is (i) and (iii)

6NaOH+3Cl₂ → 5NaCl+NaClO₃+3H₂O

Chlorine gas oxidation number ranges from 0 to –1 to 0 to +5.