Group 16 - 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

Which of the following statements is false?

1. ONCl and ${ONO}^{-}$ are isoelectronic.

2. $O_{3}$ molecule is bent

3. Ozone is violet-black in solid-state

4. Ozone is diamagnetic gas

Subtopic: Group 16 - Preparation, Properties & Uses |

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A chemical that depletes the ozone layer is:

1. Sulphur

2. Chlorofluorocarbons (CFCs)

3. Nitrogen

4. Hydrogen

Subtopic: Group 16 - Preparation, Properties & Uses |

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Sulphuric acid is used:

1.	In lead storage batteries	2.	In making fertilizers
3.	As a dehydrating agent	4.	All of the above

Subtopic: Group 16 - Preparation, Properties & Uses |

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The catalyst that is used in the contact process is:

1.	Fe₂O₃	2.	Al₂O₃
3.	V₂O₅	4.	SO₃

Subtopic: Group 16 - Preparation, Properties & Uses |

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The chemical formula of oleum is -

1.	H₂S₂O₈	2.	H₂S₂O₇
3.	H₃S₂O₆	4.	H₂SO₅

Subtopic: Group 16 - Preparation, Properties & Uses |

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A compound among the following that has an -O-O- linkage is:

1. $H_{2} {SO}_{4}$ $,$ $sulphuric$ $acid$

2. $H_{2} S_{2} O_{8},$ $peroxodisulphuric$ $acid$

3. $H_{2} S_{2} O_{7},$ $pyrosulphuric$ $acid$

4. $H_{2} {SO}_{3},$ $sulphurous$ $acid$

Subtopic: Group 16 - Preparation, Properties & Uses |

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The acidity of diprotic acids in aqueous solution increases in the order:

1. H₂S < H₂Se < H₂Te

2. H₂Se < H₂S < H₂Te

3. H₂Te < H₂S < H₂Se

4. H₂Se < H₂Te < H₂S

Subtopic: Group 16 - Preparation, Properties & Uses |

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Match the items in Columns I and II and mark the correct option.

Column I	Column II
A. H₂SO₄	1. Highest electron affinity
B. CCl₃NO₂	2. Chalcogen
C. Cl₂	3. Tear gas
D. Sulphur	4. Storage batteries

Codes:

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

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Which of the following hydrides is the most acidic?

1.	H₂Te	2.	H₂Se
3.	H₂O	4.	H₂S

Subtopic: Group 16 - Preparation, Properties & Uses |

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An amorphous solid“A” burns in the air to form a gas “B” which turns lime water milky. The gas is also produced as a by-product during the roasting of sulphide ore. This gas decolourises acidified aqueous KMnO₄ solution and reduces Fe³⁺to Fe²⁺. The solid "A" and the gas "B" are:

1. 'A' = S₈: ‘B' = SO₂

2. 'A' = S₈: ‘B' = SO₃

3. 'A' = S₁₀: ‘B' = SO₂

4. Not predictable

Subtopic: Group 16 - Preparation, Properties & Uses |

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