Oxyacids Of Sulphur

Q. Which of the following acids do not exhibit optical isomerism?

1. Maleic acid
2. Alanine
3. Lactic acid
4. Tartaric acid

Q. calculate molar conductivityof oxalic acid, given that, Na2C2O4-400 Ω -1cm2 H2SO4 700 Ω -1 cm-mol-1Na2SO4 450 Ω -1 cm 2 eq-1

Q.

Write the formulae of the following compounds: Sodium hydroxide, sulfuric acid, ammonia, and sodium carbonate.

Q.

When ethanoic acid is heated with ${\mathrm{NaHCO}}_3$, the gas evolved is

1. ${\mathrm{H}}_2$

2. ${\mathrm{CO}}_2$

3. ${\mathrm{CH}}_4$

4. $\mathrm{CO}$

Q. if p^ka =4 then vant hoff factor for weak monobasic acid when c=0.01M

Q. Which of the following species have S-S bonds?

1. $S_2{O}_4^{2-}$
2. $S_2{O}_5^{2-}$
3. $S_2{O}_3^{2-}$
4. $S_2{O}_7^{2-}$

Q. How and why does the density of liquid water change on prolonged electrolysis?

1. Decrease, as the proportion of $H_{2}O$ increases
2. Remains unchanged
3. Increases, as the proportion of $D_{2}O$ increases
4. Increases, as the volume decreases

Q. $H_2{S}_2{O}_2$ is known as thiosulphurous acid and oxidation state of sulphur is +3.

1. True
2. False

Q.

Aluminum oxide reacts with sulfuric acid to form:

1. Aluminum sulfate and water

2. Aluminum sulfate and hydrogen

3. Aluminum sulfate and oxygen

4. Aluminum sulfate and sulfate dioxide.

Q. An example of double salt is

1. Washing soda
2. Turnbull Blue
3. Hypo
4. Potash alum

Q. A solution when diluted with water and boiled, it gives a white precipitate. On addition of excess $N{H}_{4}Cl/N{H}_{4}OH$, the volume of precipitate decreases leaving behind a white gelatinous precipitate. Identify the precipitate which dissolves in $N{H}_{4}Cl/N{H}_{4}OH$

1. $Zn(OH{)}_2$
2. $Sr(OH{)}_2$
3. $Mg(OH{)}_2$
4. $Ca(OH{)}_2$

Q. the compound which will not undergo claisen ester condensation is 1. CH3CH2COOC2H5 2.CH3COOC2H5 3.cyclo hexane-COOC2H5 4.cyclo hexane-CH2COOC2H

Q. Compare bond order Bo3 NO3

Q.

Metaphosphoric acid has the formula

1. H₃PO₄

2. H₂PO₃

3. HPO₃

4. H₃PO₂

Q. Why acetic acid is called glacial acetic acid?

Q. Assuming complete ionisation , same moles of which of the following compounds will require least amount of acidified KMnO4 for complete oxidation FeSO4 FeSO3 FeC2O4 Fe(NO2)2

Q. Consider the following sulphur based oxoacids.
${\text{H}}_2{\text{SO}}_3,{\text{H}}_2{\text{SO}}_4,{\text{H}}_2{\text{S}}_2{\text{O}}_8$ and ${\text{H}}_2{\text{S}}_2{\text{O}}_7$.
Amongst these oxoacids, the number of those with peroxo$(\text{O}-\text{O})$ bond is .

Q. 5 g of oleum is diluted with water. It requires 533.16 ml of 0.1 M $Ba(OH{)}_2$ solution for complete neutralization. Find oleum strength (in %).

Q. $H_4{S}_2{O}_4$ is known as hyposulphurous acid and it has an $S-S$ linkage.

1. True
2. False

Q. Answer of following question given that A is sulphuric acid.
Which of the following oxyacid has $S-O-S$ linkage?

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

Q. which of the following has longest C-O bond length ? (free C-O bond length in CO is 1.128 Ang) 1.)\lbrack Mn(CO)6\rbrack^{+ } 2)\lbrack Ni(CO)4\rbrack 3)\lbrack CO(CO)4\rbrack^- 4)\lbrack Fe(CO)4\rbrack^{2-

Q. Bleaching action of chlorine is due to:

1. reduction
2. acidic effect
3. oxidation
4. basic effect

Q. This section contains 1 Assertion-Reason type question, which has 4 choices (a), (b), (c) and (d) out of which ONLY ONE is correct.

इस खण्ड में 1 कथन-कारण प्रकार का प्रश्न है, जिसमें 4 विकल्प (a), (b), (c) तथा (d) दिये गये हैं, जिनमें से केवल एक सही है।

A : The basicity of H₃PO₃ is two.
A : H₃PO₃ की क्षारकता दो है।

R : In H₃PO₃, two hydrogen atoms are attached to oxygen atoms and one hydrogen is directly attached to ‘P’-atom.
R : H₃PO₃ में दो हाइड्रोजन परमाणु ऑक्सीजन परमाणुओं से जुड़े होते हैं तथा एक हाइड्रोजन सीधे ‘P’-परमाणु से जुड़ा होता है।

1. Both (A) and (R) are true and (R) is the correct explanation of (A)
   
   (A) तथा (R) दोनों सही हैं तथा (R), (A) का सही स्पष्टीकरण है
2. Both (A) and (R) are true but (R) is not the correct explanation of (A)
   
   (A) तथा (R) दोनों सही हैं लेकिन (R), (A) का सही स्पष्टीकरण नहीं है
3. (A) is true but (R) is false
   
   (A) सही है लेकिन (R) गलत है
4. (A) is false but (R) is true (A)
   
   गलत है लेकिन (R) सही है

Q. Among the following, the number of elements showing only one non-zero oxidation state is
$O,Cl,F,N,P,Sn,Tl,Na,Ti$

Q.

Which of the following does not contain a bond between two sulphur atoms?

1. Caro’s acid

2. Sodium thiosulphate

3. Elemental octasulphur

4. None of the above

Q. Peroxy linkage is present in:

1. Caros acid
2. Pyrosulphuric acid
3. Sulphurous ac
4. Dithionic acid

Q. How many S–O–S linkages present in Marshall’s acid?

मार्शल अम्ल में कितने S–O–S बंधन पाए जाते हैं?

1. 0
2. 1
3. 3
4. 2

Q. Find the number of acid(s) which are having peroxy linkage from the following:
$H_{3}P{O}_5,H_{2}S{O}_5,H_2{S}_2{O}_7,H_2{S}_2{O}_8,HCl{O}_4$

Q. Molarity of $0.1N$ oxalic acid is :

1. $0.05$ M
2. $0.1$ M
3. $0.2$ M
4. $0.3$ M

Q. This section contains 1 Matrix Match type question, which has 2 Columns (Column I and Column II). Column I has four entries (A), (B), (C) and (D), Column II has four entries (P), (Q), (R) and (S). Match the entries in Column I with the entries in Column II. Each entry in Column I may match with one or more entries in Column II.

इस खण्ड में 1 मैट्रिक्स मिलान प्रकार का प्रश्न है, जिसमें 2 कॉलम (कॉलम I तथा कॉलम II) हैं। कॉलम I में चार प्रविष्टियाँ (A), (B), (C) तथा (D) हैं, कॉलम II में चार प्रविष्टियाँ (P), (Q), (R) तथा (S) हैं। कॉलम I में दी गयी प्रविष्टियों का मिलान कॉलम II में दी गयी प्रविष्टियों के साथ कीजिए। कॉलम I में दी गयी प्रत्येक प्रविष्टि का मिलान कॉलम II में दी गयी एक या अधिक प्रविष्टियों के साथ हो सकता है।

Match the Columns and choose the appropriate answer

कॉलमों का मिलान करें और सही उत्तर चुनें

Column-I contain oxoacid of phosphorus and Column-II contain the preparation method corresponding to given oxoacid. Match correctly Column-I with Column-II.

कॉलम-I में फॉस्फोरस के ऑक्सोअम्ल दिए गए हैं तथा कॉलम-II में इन ऑक्सोअम्ल से सम्बन्धित विरचन की विधियाँ दी गयी हैं। कॉलम-I तथा कॉलम-II को सही सुमेलित कीजिए।

	Column-I कॉलम-I		Column –II कॉलम-II
(A)	H3PO2	(P)	Phosphorus acid + Br2, Δ फॉस्फोरस अम्ल + Br2, Δ
(B)	H3PO3	(Q)	White P4 + alkali सफेद P4 + क्षार
(C)	H4P2O6	(R)	P2O3 + H2O
(D)	(HPO3)n	(S)	Red P4 + alkali लाल P4 + क्षार

1. A-PQ, B-PR, C-S, D-PQ
2. A-Q, B-R, C-S, D-P
3. A-PQ, B-RS, C-RS, D-PQ
4. A-PQRS, B-RS, C-RS, D-PQ