Test: Oxygen & Sulphur Compounds - NEET MCQ

Charring of cane sugar by sulphuric acid shows ...... property of the acid.

Which of the following statements is incorrect?

xSo₂ + yMnO^-₄ + zH₂O → Mn²⁺ + SO₄^2- + H⁺ . In this, three values of x, y, z are

Which of the following is wrong statement?

Among the following oxyacids of sulphur, which one has more than one oxidation state for sulphur?

In SO₃ molecule, 3 oxygen atoms are attached to sulphur atom through double bonds. Hence, the molecules consist 3π-bonds. The types of pi-bonds present in SO₃ molecule are

Which of the following is known as C aro’s acid?

Direction (Q. No. 11) This section is based on Statements I and Statements II. Select the correct answer from the codes given below.

Q. 

Statement I : In Caro’s acid (H₂SO₅), the oxidation state of sulphur is found to be +8.

Statement II : In Caro’s acid, sulphur atom is attached to four oxygen atoms directly.

Direction (Q. Nos. 12-15) This section contains 4 multiple choice questions. Each question has four choices (a), (b), (c) and (d), out of which ONE or MORE THAN ONE are correct.

Q. 

The incorrect statements among the following are

The chemical species having sp²-hybridisation for the central atom is

Which of the following is/are the correct statement(s) about sodium thiosulphate?

Which pair is isostructural?

Direction (Q. Nos. 16 and 17) This section contains a paragraph, describing theory, experiments, data, etc. Two questions related to the paragraph have been given. Each question has only one correct answer among the four given options (a), (b), (c) and (d).

Passage

Hydrated sodium thiosulphate, Na₂S₂O₃ .5H₂O is called hypo. It can be prepared by Spring’s reaction by adding iodine to a mixture of sodium sulphide and sodium sulphite.

Na₂S + Na₂SO₃ + I₂ → 2NaI + Na₂S₂O₃ (Spring's reaction)
It is an efflorescent substance and at 215°C, it is completely dehydrated to Na₂S₂O₃. Its reaction with iodine is used fo r the iodometric estimation of oxidising agents like CuSO₄, CaOCI₂, KMnO₄, MnO₂, etc., which on reaction with KI liberate I₂. It is used in the bleaching industry to destroy excess chlorine on fabrics. It is used in photography as fixer since, it dissolves unexposed AgBr on the film.

Q. 

Select the incorrect statement regarding hypo.

Passage

Hydrated sodium thiosulphate, Na₂S₂O₃ .5H₂O is called hypo. It can be prepared by Spring’s reaction by adding iodine to a mixture of sodium sulphide and sodium sulphite.

Na₂S + Na₂SO₃ + I₂ → 2NaI + Na₂S₂O₃ (Spring's reaction)

It is an efflorescent substance and at 215°C, it is completely dehydrated to Na₂S₂O₃. Its reaction with iodine is used fo r the iodometric estimation of oxidising agents like CuSO₄, CaOCI₂, KMnO₄, MnO₂, etc., which on reaction with KI liberate I₂. It is used in the bleaching industry to destroy excess chlorine on fabrics. It is used in photography as fixer since, it dissolves unexposed AgBr on the film.

Q. 

In Na₂S4O₆, sulphur has different oxidation states. They are

Direction (Q. Nos. 18-20) Choices for the correct combination of elements from Column I and Column II are given as options (a), (b), (c) and (d), out of which one is correct.

Q. 

Match the Column I with Column II and mark the correct option from the codes given below.

Match the Column I with Column II and mark the correct option from the codes given below.

Match the Column I with Column II and mark the correct option from the codes given below.

Direction (Q. Nos. 21-25) This section contains 5 questions. When worked out will result in an integer from 0 to 9 (both inclusive).

Q. 

The number of S—S bonds in sulphur trioxide trimer (S₃O₉) are

The number of metal sulphides precipitated by passing H₂S in acidic medium among
ZnS, PbS, CuS, NiS, MnS, CdS, CoS, HgS, SnS.

The number of chemical species having sp³-hybridisation.
SO₃, SO₂, SOCI₂, SO₂CI₂, O₃, SF₂, SF₄, 

The number of covalent bonds present in H₂SO₅.

Number of molecules having non-zero dipole moment in 
O₃, SO₃, SF₄, SF₆, H₂S, CS₂, SO₂, H₂O and H₂O₂.