INAL PREPARATION

•

D MULTIPLE CHOICE QUESTIONS (WITH ONE CORRECT ANSWER)

1. The decreasing tendency to exist in puckered 8- membered ring structure is (a) S > Se> Te> Po (b) Se> S >Te> Po (c) S > Te > S e > Po (d'J Te> Se> S > Po

2. The element of group 16 that behaves as a typical metal is

(b) oxygen is more reactive than nitrogen •

(c) oxygen has a higher boiling point than nitrogen (d'J oxygen has a lower density than nitrogen.

8. Which of the following is a non-linear molecule? (a) S03 (b) C02 (c) CS

2 (d'J BeC12.

9. The hydride of group 16 elements showing maximum tendency for complex formation is (a) H20 (b) H2S

(c) tellurium (d'J polonium. 3. Which one of the following bonds has the lowest

bond energy? (a) 0--0 (b) S-S

(c) Se-Se (d'J Te-Te. 4. Which of the following compounds is the strongest ·

reducing agent? . (a) H20 (b) H2S

(c) H2Se (d'J H2Te. .. S. ·Which of the following has the largest size?

(a) s2- • . (b) se2-

(c) 02- (d'J Te2-

6. Which one of the following is not true at room temperature and pressure? . · (a) P4010 is a white solid (b) S02 is a colourless gas ( c) S03 is a colourless gas . (d'J N02 is a brown gas

7. It is possible to obtain oxygen from air by fractional distillation because

•

(a) oxygen and nitrogen are placed in different . groups of the periodic table · .

•

1, 2 and 3

(b) 2 and 3

(d'J (c) 1 and 2

(e) 1 only

•

13. Consider the following compounds 1. Sulphur dioxide 2. Hydrogen peroxide 3, Ozone. Among these compounds identify those that can act as bleaching agents (a) 1 and 3

(c) H2Se (d'J H2Te. •

10. The correct order of decreasing stability of hexa · fluorides of group 16 members is (a) SF6 > SeF6 > TeF6 (b) TeF6 > Se F6 > SF6

(c) SF6 > Te F6 > SeF6 (d'J TeF6 > SF6 > SeF6

11. The oxide which acts. as a reducing, oxidising, bleaching agent and a Lewis base is (a) S02 . . (b) S03 (c) C02 (d'J NO.

12. Which one of the following compounds has the smallest bond angle in its molecule? (a) OH2 (b) SH2 (c) NH3 (d'J S02

14. Among Al203, Si02, P203 and S02, the correct

order of acid strength is (a) S02 < P20

3 < Si02 < Afi03

(b) Si02 < S02 < Al203 < P203. (c) Al20

3 < Si0

2 < S02 < P203

(d'J Al203 < Si02 < P203 < S02 lS. The correct order of bond angles (smallest first) in

H2S, NH3, BF3 and SiH4 is (a) H2S < SiH4 < NH3 < BF3 (b) NH

3 < H2S < SiH

4 < BF3

(c) HzS < NH3 < s� < BF3 (d') H2S < NH3 < BF3 < SiH4

16. The correct order in which the O - 0 bond length increases in the following is:

(a) 03 < H202 < 02 (b) 02 < 03 < H202 (c) 02 < H202 < 03 (d'J H202 < 02 < 03

17. Of the following set, which one does not contain . isoelectronic species?

(b) selenium (a) sulphur

•

ANIRUDDH T

RIPATHI (

Bhilai)

CHEMISTRY By ANIRUDDH TRIPATHI [C.A.T.]

OXYGEN FAMILY [ P BLOCK ELEMENTS]

33. Which one of the following is an amphoteric oxide? (a) NaiO (b) S0

2

•

'

(d) o�-

(b) Cl2

(d) F2

O!, 02 .and o�-, the correct

(a) 12

(c) Br2

30. In the species 02,

26. Which of the following give oxygen and metal on heating (a) Mn0

2

(c) Ag20

27. Liquid oxygen is (a) a poison (b) an explosive (c) an oxidiser in rockets and missiles (d) used for respiration

28. Solid oxygen has a pale blue colour which is attributed to (a) electronic transitions from the singlet ground

state to the triplet excited state (b) electronic transitions from antibonding 1t­

molecular orbitals to bonding 02pz M.O.'s. (c) electronic transitions from the triplet ground

' state to anti bonding a2pz molecular orbital (d) electronic transistions from the triplet ground

state to the excited singlet state. 29. Which one of the following halogen liberates oxygen

when passed through hot concentrated KOH solution?

decreasing order of bond strength is

(a) 02 > oi > 02 > o�-

(b) O! >02 >02 >0�-

(c) o�- > 02 > O! > 02 •

(d) 02 > o�- > 02 > O! 31. Identify the correct order of acidic strength of C02,

CuO, CaO, H20 (a) CaO < CuO < H20 < C02 (b) H20 < CuO < CaO < C02 (c) CaO < H20 < CuO < C02

. (d) H20 < C02 < CaO < CuO 32. Which of the following molecular species has

unpaired electron(s)? (a) N2 (b) F2

(a) ro!-,soi-,c104 (b) CN-,N2,c�-

(c) so2- co2- No- (d) Bo3- co2- No- 3 , 3 , 3 3 , 3 , 3

_ 19. Which is the strongest acid? (a) H2S04 (b) HCl (c) HC104 (d) HN0

3

20. As compared to nitrogen, oxygen is (a) less electronegative and less reactive (b) more electronegative and less reactive (c) more electronegative and more reactive (d) less electronegative and more reactive

21. Which of the following has least bond angle? (a) H

20 (b) H

2S

(c) H2Se (d) H2Te 22. Which among the following statements are correct?

(i) Carbon monoxide is neutral whereas S03

is acidic. (ii) Potassium oxide is basic whereas nitrous oxide is acidic. (iii) Aluminium and zinc oxides are amphoteric. (iv) Sulphur trioxide is acidic whereas phosphorus pentoxide is basic. (v) Carbon dioxide is neutral whereas sulphur dioxide is amphoteric. (a) (ii) and (iii) (b) (i) and (iv)

(c) (i) and (iii) (d) (ii) and (iv)

(e) (iii) and (v)

23. SF2, SF 4 and SF6

have the hybridizations at sulphur atom respectively as (a) sp2, sp3, sp3J2 (b) sp3, sp3, sp3J2,

'

(c) sp3, sp3d, sp3d2 , (d) sp3, spd2, d2sp3

24. Incorrect matching amongst the following is (i) Linear-H20, S02 (ii) V-shaped ; CH2, SnC12 (iii) See-saw-SF4, TeC14 (iv) T-shaped-lC13, CIF3

(a) only (1) (b) both (1) and (i1)

(c) only (iii) (d) both (iii) and (iv)

25. Which of the following is most easily hydrolysed? (a) SF6 (b) NF3

(c) CC14

(d) TeF6

18. Which of the following would have a permanent dipole moment?

_ (a) BF3

(c) SiF4

•

ANIRUDDH T

RIPATHI (

Bhilai)

CHEMISTRY By ANIRUDDH TRIPATHI [C.A.T.]

OXYGEN FAMILY [ P BLOCK ELEMENTS]

•

•

43. Which of the following is the wrong statement ?

(a) Ozone is diamagnetic gas

(b) ONCl and ONO- are isoelectronic

(c) 03 molecule is bent

34. Which is the most basic oxide? (a) Sn02 · (b) K20

(c) CuO (ti) FeO

35. Which metal has a greater tendency to form metal oxide?

36. Which one of the following on hydrolysis gives the corresponding metallic hydroxide, H202 and 02 ?

(a) Li20 (b) Na202

(c) Na02 (tf)Na20

(e) BeO

37. The substance which does not liberate oxygen on treatment with ozone is

•

(b) 4, 1

(ti) 1, none

(b) oxidising agent

(ti) dehydrating agent

(b) Fe(OH)3

(ti) Cr(OH)3.

(a) 3, 4

(c) 2, 2

H2S04

acts as a/an

(a) reducing agent

(c) · catalytic agent

SO. Oxidation state of S in H2S05

(a) + 4 (b) + 6

(c) + 7 (ti) + 5.

51. When S02 is passed through cupric chloride solution

(a) a white precipitate is obtained

(b) the solution becomes colourless

(c) the solution becomes colourless and a white precipitate of Cu2Cl2 is obtained

(ti) no visible change takes place

45. In the reaction

2 Ag + HzSO 4--" AgzSO 4 + 2 HzO + SOz

46. Sodium thiosulphate is formed when .

(a) 12 is added to a mixture of Na2S and NazS03

(b) NaHS03 is treated with NaHS

(c) a solution of NazS03 is heated with S.

(ti) all the three above.

47. In presence of water, S02 acts as a

(a) reducing agent (b) oxidising agent

(c) dehydrating agent (ti) none of the above.

48. When concentrated H2SO 4

is added to sugar, it gets charred. During this reaction H2SO

4 acts as a/an

(a) oxidising agent (b) reducting agent

(c) sulphonating agent (ti) dehydrating agent.

49. In S8

molecule, each S atom is associated with how many single covalent bonds and lone pairs of electrons?

(ti) Ozone is violet-black in solid state .

44. In the contact process, the impurities of arsenic are removed by

(a) Fe20

3

(c) Al(OH)3

. .

52. Bleaching action of S02 is due to

(a) reduction (b) oxidation

· · (c) hydrolysis (ti) its acidic nature.

53. When S02 is passed through acidified K2Cr207

solution

(a) the solution turns blue

(b) the solution is decolourised

•

•

(ti) acid

(b) H2S

(ti) Hg.

(b) Ca

(ti) Fe

(ti) ZnO

(c) bleaching agent

(a) Al

(c) Cr

(a) PbS

(c) S02

38. Ozone (a) turns benzidine paper brown (b) turns tetramethyl base violet

(c) is tested by tailing of Hg

(ti) all of these.

39. The gases respectively absorbed by alkaline pyrogallol and oil of cinnamon are

(a) 03, CH4

(b) 02, 03

(c) S02, CH4

(ti) N20, 03. 40. Which of the following will not be oxidised by

ozone? (a) KI · (b) FeS0

4

(c) KMn04

(ti) K2Mn04

41. The name and composition of the product x in the following reaction are

2 KOH + 5 03 x + 5 Oz + HzO (a) potassium oxide, K20

(b) potassium peroxide, K202

(c) potassium superoxide, K02

(ti) potassium ozonide, K03 42. In the following reaction, 03 behaves as a/an

H202 + 03 HzO + 2 Oz (a) oxidant (b) reductant

ANIRUDDH T

RIPATHI (

Bhilai)

CHEMISTRY By ANIRUDDH TRIPATHI [C.A.T.]

OXYGEN FAMILY [ P BLOCK ELEMENTS]

•

• zero

(b) two

(d)

(h) so1- •

(b) It behaves like a metal whose conductivity increases with decrease in temperature and becomes super conducting below 0·33 K

(c) It has a bronze colour and metallic luster

(d)

(a) S2o�­

(c) s201-

(a) so�­

(c) s201-

It is purely a non metal having no conducting properties and shows non metallic characteristics.

63. When sulphur is dissolved in oleum, a deep blue solution containing polyatomic sulphur cation is obtained. The formula of the cation present is

(a) s�+ (h) s�+

(c) sf; (d) stt·

64. A solution obtained by passing hydrogen sulphide gas through saturated aqueous solution of sulphur dioxide till its smell disappears and is turned milky is called

(a) Wackenroder's solution

(b) Tollen's reagent

(c) photogapher's fixer (d) oil of vitriol.

65. The number of S-S bonds in sulphurtrioxide trimer (S309) is

(a) three

(c) one

69. Which of the following species is basic and reducing? ·

66. There is S-S bond in

(a) H2S

20

7 (b) H

2S

20

8

(c) H2S

20

6 (d) H

2S

20

3

67. Number of bonds in S02

are

(a) two a and two 1t (b) two b and one 1t

(c) one a, two 1t and one lone pair

(d) none of these

68. S-S bond is present in

70. The oxidation number of S in H2S208 is

(a) + 2 (b) + 4

(c) + 6 (d) + 7

• (h) s

2o�­

(d) S2o?-.

(a) s2o�­

(c) S2o�-

55. States of hybridization of P in PF5

and S in SF6 are respectively?

(a) sp3d2, sp3d (b) sp3d, sp3d2

(c) sp3, sp3d (d) sp2, sp3

56. There is no S-S bond in

57. Oxygen is more electronegative than sulphur. Yet H2S is acidic while H20 is neutral. This is because

(a) water is a highly associated compound

(b) molecular mass of H2S is more than that of H20

(c) H2S is gaseous under ordinary conditions while · H20 is a liquid

(d) H-S bond is weaker than H-0 bond.

58. Which has maximum number of oxo groups?

(a) H2S04 (b) H2S03

(c) H3P03 (d) H3P04. . 59. Sulphuric acid has great affinity for water because

• (a) it hydrolyses the acid •

(b) it decomposes the acid

(c) acid forms hydrates with water

(d) acid decomposes water.

60. Cone. H2S04 displaces hydrogen chloride from

chlorides because

(a) it is stronger acid

(b) sulphates are less soluble than chlorides

(c) sulphates are more soluble than chlorides ·

(d) HCl is a gas while H2S04 is a liquid.

61. The reason why cone. H2S04 is used largely to prepare other acids is that cone. H

2SO 4

(a) is highly ionised (b) is dehydrating agent

(c) has a high specific gravity and density

(d) has a high boiling point.

62. Which of the following statements is incorrect about polythiazyl

(a) It is a polymeric sulphur nitride of chemical formula (SN)x

(c) S02 is reduced

(d) green Cr2(S04)3 is formed.

54. Hybridization in S03 is

(a) sp2 (b) sp3 (c) sp2d (d) sp3Jl

•

ANIRUDDH T

RIPATHI (

Bhilai)

CHEMISTRY By ANIRUDDH TRIPATHI [C.A.T.]

OXYGEN FAMILY [ P BLOCK ELEMENTS]

•

(b) NaHS04

(d) NaOH 83. The element evolving two different gases on

reaction with cone. sulphuric acid is (a) P (b) C

(c) Hg (d) S

(e) Sn 84. Na2S

30

3 is oxidised by 12 to

(a) NaiS (b) Na2S04

(c) NaHS04

(d) Na2S406 85. The species having pyramidal shape is

(a) S03 (b) BrF5

(c) Sioi- (d) OSF2 86. Which of the following statements regarding

sulphur is incorrect ? (a) S2 molecule is paramagnetic (b) The vapour at 200°C consists mainly of S8 rings (c) At 600°C, the gas mainly consists of S2

molecules (d) The oxidation state of sulphur is never less

. than + 4 in its compounds 87, Which of the following compounds possesses both

Lewis acid and Lewis base character? (a) S0

3 (b) SF6

(c) H2S04 (d) SeF4.

88. In the reaction : H2S + H202 S + 2 H20 (a) H

2S is an acid and H202 is a base

(b) H2S is a base and H202 is an acid (c) H

2S is an oxidising agent and H202 is a

reducing agent (d) H2S is a reducing agent and H202 is an

oxidising agent (e) H2S is hydrolysed to S

89. Which of the following has -0-0- linkage. ? (a) H2S206 (b) H2S208

(c) H2S203

(d) H2S406

90. The oxyacid of sulphur that contains a lone pair of electrons on sulphur is

81. Two types of FXF angles are present in which of the following molecule (X = S, Xe, C) (a) SF4 (b) XeF4

(c) SF6 (d) CF4

82. Aqueous solution of NaiS203 on reaction with Cl2 • gives

(a) Na2S406

(c) NaCl

., '

monoclinic S

(d) so�-, c104

(d) 10

(b) B�

(d) SiF4

( b) prismatic S (d)

(c) 2

(c) . coi-,soi-

(a) XeF4

(c) SF4

77. Cone. H2S04 oxidises carbon to (a) CO (b) C02

(c) CO and C02 (d) carbonate 78. What is the percentage of sulphur used in

vulcanization of rubber? (a) 5% (b) 3%

· (c) 30% (d) 55%

19. How many atoms are packed differently in cyclic form in an allotrope of monoclinic sulphur? (a) 8 (b) 6

80. In which of the following pairs, both species do have the similar geometry? (a) C02, S02 (b) NH3, BH3

72. How H2S is prepared in laboratory? ·

(a) FeS04

+ H2S04 (b) FeS + dil. H2S04

(c) FeS2 + cone. H2S04

(d) Elementary H2 + elementary S 73. The acid having S = S bond and a lone pair on S

atom is (a) H2S0

3 (b) H2S203

(c) H2S202 (d) H2S204

74. S2Cl2 hydrolyses slowly to form HCl, S02 and X. Which of the following is X? (a) S03 (b) H2

(c) 02

(d) S

75. Which of the following chemical reactions depicts the oxidising behaviour of H

2S0

4?

(a) NaCl+ H2S04

NaHS04 + HCl (b) 2 PC15 + H2S04-�

2 POC13

+ 2. HCl + S02Cl2 (c) 2 Ill + H2S0

4 12 + S02 + 2 H20

(d) Ca(OH)2

+ H2S04 CaS04 + 2 H20 76. In which of the following molecules/ions are all

the bonds not equal?

71. When H2S gas is passed through nitric acid, the

product is (a) rhombic S (c) amorphous S (e) plastic S

•

ANIRUDDH T

RIPATHI (

Bhilai)

CHEMISTRY By ANIRUDDH TRIPATHI [C.A.T.]

OXYGEN FAMILY [ P BLOCK ELEMENTS]

•

(b) sulphuric acid

.

pyrosulphuric acid

(c) peroxodisulphuric acid

(a)

(a) sulphurous acid

91. Select the incorrect statement among the following:

SF6 is not hydrolysed because

(a) S-F bond strength is very high

(b) S-atom is coordinately saturated

� (c) SF6

is a non-polar molecule

(a) SF6

has a tetrahedral structure

92. SF 4 is hydrolysed to give

(a) H2S (b) H2P04

(c) S02 (a) SOF2

94. An aqueous solution of a gas (X) turns an acidified K2Cr207 solution green, gives an acid (Y) on boiling with H202 which forms white precipitate with aqueous BaC12 and are insoluble in dilute HCl. Gas (X) and acid (Y) are respectively

(a) Cl2, HCl (b) S02, H2S04

(c) S03, H2S03 (<l) C02, H2C03 95. S02 is more powerful reducing agent in

(a) acidic medium (b) basic medium

(c) neutral medium (a) dry state

96. Compounds A and B are treated with dil. HCl separately. Compound A gives a gas X having

•

pungent smell of burning sulphur and the solution is turned turbid while the compound B gives a gas Y having a smell of rotten eggs. The gases X and Y react with each other giving same product as was formed in the turbid solution of A. The compounds A and Bare respectively

(a) NazS203, NazS (b) NazS203, Na2S04

(c) NazS, Na2S03 (<l) NazS03, NazS04

m MULTIPLE CHOICE QUESTIONS (WITH ONE OR MORE THAN ONE CORRECT ANSWERS)

97. Oxygen is not evolved when (b) It is not used to remove iodine stains

(a) potassium chlorate is heated (c) It is not used as an antichlor

(b) ammonium nitrate is heated (a) It does not behave as a reducing agent

(c) sodium peroxide reacts with water 101. Hydrogen sulphide exhibits (a) zinc oxide is treated with NaOH (a) acidic properties (b) oxidising properties

98. Which of the following statements about sulphur (c) reducing properties are correct? (a) basic properties

93. The bond order of S-0 bond in oxyhalides of sulphur decreases in the order

(a) SOF2 > SOC12 > SOBr2

(b) SOBr2 > SOC12 > SOF2

(c) SOC12 > SOBr2 > SOF2 (a) SOF2 > SOBr2 > SOC12

(a) Sulphur exists as s8

octaatomic molecule with puckered ring structure.

(b) In s8

molecule, each S atom is sp3-hybridized involving both bonding and non-bonding pairs of electrons.

(c) Each S atom in S8

molecule is associated with two a bonds and two lone pairs of electrons.

(a) The S-S-S bond angle in s8

molecule is 109·5°.

99. Which of the following properties decrease from top to bottom down the group in case of hydrides of oxygen family members (a) Dipole moment (b) Bond angle

(c) Covalent character (a) Reducing character

100. Which of the following statements are correct about hypo (NazS203 . 5 HzO)? (a) It is used in photography to remove AgBr as a

fixer

102. Peroxoacids of sulphur are

(a) H2S0

3 (b) H

2S05

(c) H2S04 (<l) H2S208

103. S02

acts as a/an

. (a) oxidising agent (b) bleaching agent

(c) reducing agent (a) disinfectant

104. Anomalous behaviour of oxygen is due to its

(a) high electronegativity (b) small atomic size

(c) non-availability of d-orbitals

(a) existence as diatomic molecule

105. sp2-Hybridization is involved in the molecule(s) of

(a) S02 (b) S03

(c) C02

(<l) H2S

1.06. The gas(es) used in sterilizing water is (are) (a) S0

2 (b) S03

(c) C12

(a) 03

ANIRUDDH T

RIPATHI (

Bhilai)

CHEMISTRY By ANIRUDDH TRIPATHI [C.A.T.]

OXYGEN FAMILY [ P BLOCK ELEMENTS]

LINKED COMPREHENSION TYPE (MULTIPLE CHOICE QUESTIONS)

PARAGRAPH 2

•

(b) SF6

(d) NaF

PARAGRAPH 3

112, The colourless gas Z is (a) SF4

(c) S4F4

110, The yellow powder X is (a) K

2Cr

20

7 (b) FeCl3

(c) K2Cr0

4 (d) S .

111, The colourless gas Y is (a) SF4

(c) NaF

Compounds A and :S are treated with dil. HCl separately. The gases liberated are Y and Z

respectively. Y turns acidified dichromate paper green while Z turns lead acetate paper black. 113, The compounds A and Bare respectively

(a) NaCl and NaiC03 (b) Na2S and NaiS03 (c) Na2S03 and Na2S (d) NaiS03 and NaiS04

114. The gas Y is . (a) H2S (c) S03

115, The gas Z is (a) H

2S

(c) C02

PARAGRAPH 1

Each paragraph given below is followed by some multiple choice questions. Each question has one correct option. Choose the correct option.

.

A certain compound X when treated with copper sulphate solution yields a brown precipitate Y. On adding hypo solution, the precipitate is converted into white compound Z.

•

107, The compound Xis (a) K

2C0

3 (b) Kl

(c) KBr (d) K3P04

108, The brown precipitate Y is (a) Cul (b) 12

(c) mixture of Cul and 12

(d) none of these 109, White compound Z is

(a) Cul

(c) NaiS203

A yellow powder X is burnt in a stream of fluorine to obtain a colourless gas Y which is thermally stable and chemically inert. Its molecule has octahedral geometry. Another colourless gas Z with same constituent atoms as that of Y is obtained when sulphur dichloride is heated with sodium fluoride. Its molecule has trigonal bipyramidal geometry.

MATCHING ITTE QUESTIONS

Match the entries of eolnmn I with appropriate entries of col11mn II and choose the correct option out of the four options (a), (b), (c) and (d) given at the end of each question.

116, Column I (Element) Column II (de.g.H) kJ mcr ' ' I

' I ,,

.

' (A) 0 (p) -200 '

i

I . I ·.· ••

l • • . .

. (B) s • • (q) -190

l i ! 1 ·· (C) Se 1 ' . (r) -141 j l t t I

.. • •

! (D) Te . '·' I . (s) -195 L-.

• " ' I J • •

....J.�----- ---"'-'--··----·- -· ..... �-�,"- = . =- . .-,... -- - ... '" .. � • ... .... , • •

(a) A-r; B-p ; C-s; D-q (b) A-s; B-q; C-p; D-r (c) A-p; B-r; C-q; D-s (d) A-q; B-s ; C-r; D-p

117, Column I (Hydrides) Column II K1

(Dissociation constant) at 298 K

' .

t 1 r: I - .. -.- - � .,_.,..,,_. my1,,,.,_,. ,-,. , , � .._,_

. . .

. (p) 2·3 x 10-3

(q) l ·8 x 10-16

, . (r) 3 x 10-7 . (s) 1·3 x lo-4

. .

. ' .

. ' · 1' ,, , .

. . " l ..

.. .

. .

. . .

. .. . .

l .

I (A) H20 ··

(B) H2S . ... .. . .. .

(C) H2Se

(D) H2Te

(a) A-s ; B-p ; C-q; D-r (b) A-p ; B-q; C-r; D-s (c) A-q; B-r; C-s; D-p (d) A-r; B-s; C-p; D-q

ANIRUDDH T

RIPATHI (

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CHEMISTRY By ANIRUDDH TRIPATHI [C.A.T.]

OXYGEN FAMILY [ P BLOCK ELEMENTS]

118. Column I '

Column II

' ' ' i ' (A) H20 ' (p) 93·3° '

I

' • '

a '

(B) H2S 1 j (q) 90° • j 1 ' '

l • (C) H3Se 1 ; (r) 104·5° ' l

t ' (D) H2Te 1 (s) 91° 1

' '' :! v.�,-h,-«,J '··� ., ..... , ,..., ·- • • • v ·-·····'""" ••••• -,_,,,_ ....

. . �...,._. -

,._ .. '

L 1 �"��-· . . . . . . . . . ,,. -"·'-'

(a) A-q ; B-s ; C-r; D-p (b) A-r; B-p ; C-s ; D-q (c) A-s ; B-q ; C-p ; D-r (d) A-p ; B-r ; C-q ; D-s

'

ii MATRI:x-MATcH TYPE QoE.sTtoNs

" Match the entries of column I with appropriate entries of column II. Each -entry in column I may have one or more than one correct option from eelumn II. If the correct matches are A·p,s ; B·r ; C·p,q and D-s, then the correctly bubbled 4 x 4 matrix should be as follows: . ·

119,

A

c

Column I Column II

• . '

' • ' I ' (A) S0

2 ; t (p) Acidic in nature . ,j

! •

! ' ' $) S03 (q) Oxidising agent i

' ' 1 •

I ,, '

' (C) 03 (r) Reducing agent ! ' ' '

' • ; ' ' I (D) 02 . ' (s) Bleaching agent j 1 t ' • ; i t _,_ " . ,v . � . • .

v =�v •�=,>�· M=· =---- ' -·

•

120. Column I Column II

' l '

' (A) H2 S202 (p) S-0-S linkage ' I ' .

' (B) H:z S203 (q) Di pro tic

v e

1

' (C) H:z S204 ' ' (r) S = S linkage j ' .

' � l

(D) H2 Sz01 ' � (s) S-S linkage I i

(..,. · «- · ' � ' ; ' •• ••• •-'• QS=·� .... v " - -

' v� _,,. · · - �· v • •

121,

(A) (B)

(C)

1 (D)

Column I

ZnO

V20s Fe2o3

H2S

. '

Column II

(p) Basic (q) . Amphoteric

i i I t

• 1 _ . : _ _ (r) Acidic ., ) i ·· (s) "Reducing __ _ _ · · _ 1 � ..._ -�"'�" ,, ' -··· h• •• ,.,.. '- ·- ..,._..,......,J

ANIRUDDH T

RIPATHI (

Bhilai)

CHEMISTRY By ANIRUDDH TRIPATHI [C.A.T.]

OXYGEN FAMILY [ P BLOCK ELEMENTS]

ill INTEGER TYPE QUESTIONS 122. The total number of different types (both positive,

negative and fractional) of oxidation states shown by oxygen in its compounds is

•

123. The ratio of number of dx-pt: bonds formed in S03 and S02 molecules is

124. The number of S--0-S bonds formed in solid cyclic S03 trimer is

125. The number ofperoxo groups present in Marshall's acid is

126. The total number of diprotic acids among the following is .

H3P04, H2S04, H3P03, H2C03, H2S207, ·

H3B03, H3P02, H2Cr04, H2S03

127. In sodium metabisulphite (N32S20x), the value of •

X is

128. The difference in the oxidation numbers of the two types of sulphur atoms in N32S406 is

129. In S)09, how many TC-bonds are present ?

130. How many S-S bonds are there in S2o�- ?

131. How many lone pairs of electrons are there in OF2

molecule?

•

•

3 . •'

. . .

A B c D

0 0 • • • ..

'

•

DIRECTIONS. The answer to each of the following questions is a single digit integer, ranging from Oto 9. If

the correct answers to the question numbers A, B, C and D (say) are 4, 0, 9 and 2 respectively, then the correct darkening of bubbles should be as follows:

ASSERTION REA.SON TYPE QUESTIONS

l•11;1:(Mo10:,� Each· question given below contains STATEMENT-I (Assertion) and STATEMENT-2 (Reason). Each question bas 4 choices (a), (b), (c) and (d) out of which ONLY ONE is correct. Choose the correct option as under:

•

(a) : Statement-I is True ; Statement-2 is True ; State- ment-2 is a correct explanation for Statement-I.

(b) : Statement-I is True; Statement-2 is True; Statement- 2 is NOT a correct explanation for Statement-I.

(c) : Statement-I is True ; Statement-2 is False.

(d) : Statement-I is False ; Statement-2 is True.

132. Statement-I: Fresh stain of iodine on the cloth can . be removed by washing it with sodium thiosulphate solution.

Statement-2: Sodium thiosulphate reduces iodine to colourless iodide ion.

Statement-2: Concentrated sulphuric acid has a great affinity for water.

134. Statement-I: S03 has a planar structure. ·

Statement-zrS atom in S03 is sp2-hybridized and

0-S-O bond angle is 120° .

135. Statement-I: The S-S-S bond angle in S8 molecule is 107°.

Statement-2: S8 has a V-shape.

136. Statement-I: Cone. H2S04 reacts with KCl to give Cl2 gas.

Statement-2: HCl cannot be oxidised by cone. H2S04 to Cl2 gas.

137. Statement-I: A pink solution of potassium ·· permanganate turns green on passing 03 through

it.

Statement-2: Potassium manganate is oxidised by •

03 to potassium permanganate.

133. Statement-I: Sulphuric acid is more viscous than 138. Statement-I: 03 whenever used as oxidising agent water. essentially liberates 0

2•

ANIRUDDH T

RIPATHI (

Bhilai)

CHEMISTRY By ANIRUDDH TRIPATHI [C.A.T.]

OXYGEN FAMILY [ P BLOCK ELEMENTS]

CHEMISTRY By ANIRUDDH TRIPATHI [C.A.T.]

1. A

2. D

3. D

4. D

5. D

6. C

7. C

8. A

9. A

10. A

11. A

12. B

13. D

14. D

15. C

16. B

17. C

18. B

19. C

20. C

21. D

22. C

23. C

24. A

25. D

26. C

27. C

28. D

29. D

30. B

31. A

32. C

33. D

34. B

35. A

36. C

37. C

38. D

39. B

40. C

41. D

42. B

43. B

44. B

45. B

46. D

47. A

48. D

49. C

50. B

51. C

52. A

53. D

54. A

55. B

56. D

57. D

58. A

59. C

60. D

61. D

62. D

63. B

64. A

65. D

66. C

67. A

68. C

69. A

70. C

71. A

72. B

73. C

74. D

75. C

76. C

77. B

78. A

79. A

80. D

81. A

82. B

83. B

84. D

85. D

86. D

87. D

88. D

89. B

90. A

91. D

92. D

93. A

94. B

95. B

96. A

97. BD

98. ABC

99. AB

100. A

101. AC

102. BD

103. ABCD

104. ABC

105. AB

106. CD

107. B

108. C

109. A

110. D

111. B

112. A

113. C

114. B

115. A

116. A

117. C

118. B

119. A-PQRS,

B-PQ,

C-QRS,

D-QR

120. A-QR

B-QR

C-QS

D-PQ

121. A-Q,

B-R,

C-P

D-RS

122. 6

123. 2

124. 3

125. 1

126. 6

127. 5

128. 5

129. 6

130. 0

131. 8

132. A

133. B

134. A

135. C

136. D

137. D

ANIRUDDH T

RIPATHI (

Bhilai)