Group 18 - Preparation, Properties & Uses Recommended MCQs - 173 Questions The p-Block Elements (XII) Chemistry NEET Practice Questions, MCQs, Past Year Questions (PYQs), NCERT Questions, Question Bank, Class 11 and Class 12 Questions, and PDF solved with answers

Q1:

Which of the following compound does not exist?

1. XeOF₄

2. NeF₂

3. XeF₂

4. XeF₆

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Q2:

Among the following statements, the correct one(s) is/are:

1.	Neon gas is filled in discharge tubes with characteristic colours.
2.	Neon gas is used in beacon lights.
3.	Argon along with nitrogen is used in gas-filled electric lamps.
4.	All of the above.

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Q3:

Radon is used in the treatment of:

1.	Typhoid	2.	Cancer
3.	Cough and cold	4.	Corona

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Q4:

A xenon fluoride that does not exist is:

1. XeF₄
2. XeF₂
3. XeF₃
4. XeF₆

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Q5:

Match the species given in Column I with the shape given in Column II and mark the correct option.

	Column I		Column II
A	Its partial hydrolysis does not change oxidation state of central atom.	1	He
B	It is used in modern diving apparatus.	2	XeF₆
C	It is used to provide inert atmosphere for filling electrical bulbs.	3	XeF₄
D	It's central atom is in sp³d²hybridisation.	4	Ar

Codes

	A	B	C	D
1.	1	4	2	3
2.	1	2	3	4
3.	2	1	4	3
4.	1	3	2	4

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Q6:

$\mathrm{Xe}+\mathrm{PtF}_6 \rightarrow \text { ? }$

The product of the above reaction is:

1.	$\mathrm{O}_2{ }^{+}\left[\mathrm{PtF}_6\right]^{-}. $	2.	$\mathrm{XeF}_4 $
3.	$\mathrm{XeF}_6 $	4.	$\mathrm{Xe}^{+}\left[\mathrm{PtF}_6\right]^{-}$

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Q7:

The molecular shapes of SF₄, CF₄ and XeF₄ are:

1.	The same with 2, 0 and 1 lone pairs of electrons on the central atoms, respectively
2.	The same with 1, 1 and 1 lone pairs of electrons on the central atoms, respectively
3.	Different with 0, 1 and 2 lone pairs of electrons on the central atoms, respectively
4.	Different with 1, 0 and 2 lone pairs of electrons on the central atoms, respectively

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Q8:

(a) XeF₆+ 3H₂O →

(b) XeF₆+ H₂O $\to$

The products formed in the above reactions, respectively, are:

1. XeO₃, XeOF₄
2. XeO₆ , XeOF₄
3. XeO₃, XeOF₆
4. XeO₆, XeOF₆

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Q9:

Which of the following statements is false?

1.	H₃PO₂, H₃PO₃ and H₃PO₄ all are tribasic and reducing in nature.
2.	Amongst anions $NO_{3}^{-}$, $SO_{3}^{2-}$, $CO_{3}^{2-}$, and $BO_{3}^{3-}$, only $SO_{3}^{2-}$ have pπ-dπ bonding .
3.	Amongst anions $SO_{3}^{2-}$, $SO_{4}^{2-}$, $S_{2}O_{4}^{2-}$ and $HSO_{4}^{-}$, $SO_{3}^{2-}$ is basic and reducing in nature.
4.	Number of lone pair(s) of electrons on Xe atoms in XeF₂, XeF₄and XeF₆ are 3, 2 and 1 respectively._

Subtopic: Group 18 - Preparation, Properties & Uses | Group 16 - Preparation, Properties & Uses | Group 15 - Preparation, Properties & Uses |

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Q10:

Among the following molecules,

(i) $\overset{. .}{X} e O_{3}$

(ii) $\overset{. .}{X} e O F_{4}$

(iii) $\overset{. .}{X} e F_{6}$

Those having the same number of lone pairs on Xe are

1. (i) and (ii) only

2. (i) and (iii) only

3. (ii) and (iii) only

4. (i), (ii) and (iii) only

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1.	\(\mathrm{O}_2{ }^{+}\left[\mathrm{PtF}_6\right]^{-}. \)	2.	\(\mathrm{XeF}_4 \)
3.	\(\mathrm{XeF}_6 \)	4.	\(\mathrm{Xe}^{+}\left[\mathrm{PtF}_6\right]^{-}\)

1.	H₃PO₂, H₃PO₃ and H₃PO₄ all are tribasic and reducing in nature.
2.	Amongst anions \(NO_{3}^{-}\), \(SO_{3}^{2-}\), \(CO_{3}^{2-}\), and \(BO_{3}^{3-}\), only \(SO_{3}^{2-}\) have pπ-dπ bonding .
3.	Amongst anions \(SO_{3}^{2-}\), \(SO_{4}^{2-}\), \(S_{2}O_{4}^{2-}\) and \(HSO_{4}^{-}\), \(SO_{3}^{2-}\) is basic and reducing in nature.
4.	Number of lone pair(s) of electrons on Xe atoms in XeF₂, XeF₄and XeF₆ are 3, 2 and 1 respectively._

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