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Test: Group-18 Elements - NEET MCQ


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10 Questions MCQ Test Chemistry Class 12 - Test: Group-18 Elements

Test: Group-18 Elements for NEET 2024 is part of Chemistry Class 12 preparation. The Test: Group-18 Elements questions and answers have been prepared according to the NEET exam syllabus.The Test: Group-18 Elements MCQs are made for NEET 2024 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Test: Group-18 Elements below.
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Test: Group-18 Elements - Question 1

Which compound is prepared by the following reaction?

Detailed Solution for Test: Group-18 Elements - Question 1

Test: Group-18 Elements - Question 2

Which of the following statements is not correct about XeF2​?

Detailed Solution for Test: Group-18 Elements - Question 2

XeF2​ is obtained by direct reaction of Xe and F2​ at high pressure. It undergoes alkali hydrolysis to produce Xe and O2​. XeF2​ is a powerful reducing agent where Xe+2 can change to +6 state.

Test: Group-18 Elements - Question 3

Complete the following reactions by filling the appropriate choice.
(A) 6XeF4 + 12H2O  → 4Xe + 2XeO3 + _(i)_ + _(ii)_
(B) XeF6 + 3H2O → _(iii)_ + 6HF

Detailed Solution for Test: Group-18 Elements - Question 3

Balance chemical equation for the above two reactions are:

(A) 6XeF4​ + 12H2​O ⟶ 4Xe + 2XeO​+ 24HF + 3O2

(B) XeF6​ + 3H2​O ⟶ XeO3​ + 6HF

So, (i) = 24HF; (ii) = 3O2​ and (iii) = XeO3​

Test: Group-18 Elements - Question 4

Among the following molecules: 
(i) XeO3​ (ii) XeOF4 ​(iii) XeF6​
those having same number of lone pairs on Xe are:

Detailed Solution for Test: Group-18 Elements - Question 4

Test: Group-18 Elements - Question 5

Match the column I with column II and mark the appropriate choice.

Detailed Solution for Test: Group-18 Elements - Question 5

Hybridization of an atom is identified by caliculating the sum of sigma bonds and lone pairs.

If sum of sigma bonds and lone pairs is 2. sp hybridization

If sum of sigma bonds and lone pairs is 3. sp2 hybridization

If sum of sigma bonds and lone pairs is 4. sp3 hybridization.XeO3​ has 3 sigma bonds and 1 lone pair.So the sum is 4.So it is sp3

If sum of sigma bonds and lone pairs is 5. sp3d hybridization.XeOF2​ has 3 sigma bonds and two lone pairs ,the sum is 5.So it is SP3d.

If sum of sigma bonds and lone pairs is 6 .sp3d2 hybridization.XeF4​ has 4 sigma bonds and 2 lone pair.So the sum is 6.So it is sp3d2

If sum of sigma bonds and lone pairs is 7. sp3d2 hybridization.XeF6​ has 6 sigma bonds and 1 lone pair. So the sum is 7.So it is sp3d3

So the option A is correct match.

Test: Group-18 Elements - Question 6

In XeF2​, XeF4​, and XeF6​, the number of lone pairs on Xe, is respectively.

Detailed Solution for Test: Group-18 Elements - Question 6

XeF2​ has a linear shape. Its hybridization is sp3d which means it should have a trigonal bipyramidal shape. Since it has 3 lone pairs, they occupy the equatorial triangle.
XeF4​ has sp3d2 hybridization. It has a square planar shape and 2 lone pair of electrons.
XeF6​ has one lone pair of electrons. The 6 out of 8 electrons of Xenon are shared by 6 atoms of fluorine.

Test: Group-18 Elements - Question 7

Which of the following is not correct about xenon hexafluoride?

Detailed Solution for Test: Group-18 Elements - Question 7

On hydrolysis the products formed are XeO3 and HF.
XeF6 + 3H2O → XeO3 + 6HF

Test: Group-18 Elements - Question 8

Which of the following is not a use of noble gases?

Detailed Solution for Test: Group-18 Elements - Question 8

Helium is used in filling tubes of aeroplane tyres.

Test: Group-18 Elements - Question 9

Which of the following statements is not correct?

Detailed Solution for Test: Group-18 Elements - Question 9

Air is also the most important source for the other noble gases.T races of krypton are found in various minerals, the most important source of Krypton is Earth's atmosphere. Helium obtained from natural gas and radon is obtained as a byproduct during radioactive disintegration.

So Rn is obtained during radioactive disintegration not Kr.

So Krypton is obtained during radioactive disintegration is the wrong statement.

Test: Group-18 Elements - Question 10

Compound with the geometry square pyramidal and sp3d2 hybridisation is:

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