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NEET Chemistry MCQ
Oxygen Family Mcq Neet Chemistry
Quiz 4
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Q.1
The normality of 2.3 M H2SO4 solution is [ KCET 2000]
0%
a) 2.3 N
0%
b) 4.6 N
0%
c) 0.46 N
0%
d) 0.23 N
Explanation
1M H 2.3 M = 4.6 N2SO4 = 2N thus Answer:(b)
Q.2
Which of the following ions does not have S-S linkage? [ Roorkee Screening test 2000]
0%
a) S2O82-
0%
b) S2O62-
0%
c) S2O52-
0%
d) S2O32-
Explanation
Answer: (a)
Q.3
Aqueous solutions of hydrogen sulphide and sulphur dioxide when mixed together, yield [ KCET 2002]
0%
a) Sulphur and water
0%
b) Hydrogen peroxide and sulphur
0%
c) Sulphur trioxide and water
0%
d) Hydrogen and sulphurous acid
Explanation
2H2S + SO2 → 2H2O + S Answer: (a)
Q.4
Which of the following does not exhibit sp3 hybridization? [ Manipal PMT 2001]
0%
a) SO2
0%
b) CH4
0%
c) NH3
0%
d) SO42-
Explanation
SO2 shows sp2 hybridization Answer: (a)
Q.5
State of hybridization of P in PF5 and S in SF6 are respectively? [ Haryana CEET 2001]
0%
a) sp3d2, sp3d
0%
b) sp3d , sp3d2
0%
c) sp3, sp3d
0%
d) sp2, sp3
Explanation
Calculate on the base of number of valence electrons Answer:(b)
Q.6
In the preparation of H2SO4 by contact process V2O5 is used as catalyst in the reaction. It is [ SCRA 2001]
0%
a) S + O → SO2
0%
b) SO3 + H2SO4 → H2SO4
0%
c) SO3 + H2O → H2SO4
0%
d) 2SO2 + O2 → 2SO3
Explanation
Answer: (d)
Q.7
Copper turing when heated with conce. H2SO4 gives ... [ BHU 1999]
0%
a) O2
0%
b) SO2
0%
c) SO3
0%
d) H2S
Explanation
Cu + 2H2SO4 →CuSO4 + SO2 + H2O Answer: (b)
Q.8
The shape of SF3Cl3 is .. [ kerala CEE 2000]
0%
a) Trigonal bipyramidal
0%
b) Octahedral
0%
c) Cubic
0%
d) Square planar
Explanation
SF3Cl3 like SF6 is an octahedralmolecule with sp3d2 hybridization of S atom Answer: (b)
Q.9
HCOOH reacts with concentrated H2SO4 to produce ... [ Manipal PMT 2001]
0%
a) CO
0%
b) CO2
0%
c) NO
0%
d) NO2
Explanation
HCOOH + H2S4 → CO Answer:(a)
Q.10
Which of the following hydrides shows the highest boiling point? [ MP PET 2002]
0%
a) H2O
0%
b) H2S
0%
c) H2Se
0%
d) H2Te
Explanation
Answer: (a)
Q.11
Which of the following has pπ - dπ bonding? [ CBSE PMT 2002]
0%
a) NO3-
0%
b) SO32-
0%
c) BO33-
0%
d) CO32-
Explanation
Answer: (b)
Q.12
There is S-S bond in [ JIPMER 2001]
0%
a) H2S2O7
0%
b) H2S2O8
0%
c) H2S2O6
0%
d) H2S2O3
Explanation
One S-S bond present in H2S2O6 Answer: (c)
Q.13
Which of the following isoelectronic ions has the lowest ionization energy? [ Haryana CEEET 2001]
0%
a) K+
0%
b) Ca2+
0%
c) Cl-
0%
d) S2-
Explanation
Due to larger size of S2- ionization energy will be lowest Answer:(d)
Q.14
A group 16 element exists in monoatomic state in the metallic lattice. It also exists in two crystalline forms. the metal is ... [ Pb. PMT 1999]
0%
a) Po
0%
b) S
0%
c) Se
0%
d) Te
Explanation
Po is monoatomic and exists in two crystalline forms it is a metal Answer: (a)
Q.15
The oxidation states of sulphur in the anions SO32-, S2O42- , S2O62- follow order ... [ CBSE PMT 2003]
0%
a) S2O42- < SO32- < S2O62-
0%
b) SO32- < S2O42-
0%
c) S2O42- < S2O62- < SO32-
0%
d) S2O62- < S2O42- < SO32-
Explanation
Oxidation number in : SO32- = +4 S2O42- = +3 S2O62- = +5 Answer: (a)
Q.16
Oleum is chemically known as ... [ MPPMT 2002]
0%
a) H2SO3
0%
b) H2SO5
0%
c) H2S2O7
0%
d) H2S2O8
Explanation
Answer: (c)
Q.17
Which of the following is not linear? [ Manipal PMT 2001]
0%
a) BeCl2
0%
b) SO2
0%
c) CO2
0%
d) CH ΞCH
Explanation
SO2 is angular Answer:(b)
Q.18
Which is the best oxidising agent among the following? [ EAMCET 1999]
0%
a) S
0%
b) O
0%
c) Se
0%
d) Te
Explanation
Oxygen is the only element which acts as an oxidising agent amongst oxygen family member Answer: (b)
Q.19
S-S bond is present in [ Chd. CET 2002]
0%
a) S2O72-
0%
b) S3O9
0%
c) S2O32-
0%
d) S2O82-
Explanation
In gas phase S2O32- molecule is triangular planar involving sp2 hybridization of the S atom. There are three sigma bonds formed by sp2-p overlap and three pi bonds, one by p(π)-p(π) overlap and two by p(π)-d(π) overlap. O-S-O bond angles is 120o Answer: (c)
Q.20
The oxidation state of oxygen is zero in ... [MP PMT 2001]
0%
a) CO
0%
b) O3
0%
c) SO2
0%
d) H2O2
Explanation
Answer: (b)
Q.21
The number of S-S bonds in sulphur trioxide trimer (S3O9) is ... [IIT screening test 2001]
0%
a) Three
0%
b) Two
0%
c) One
0%
d) Zero
Explanation
There are lonely S-O-S bonds, S-S bond do not exists Answer:(d)
Q.22
Which of the following is formed by the action of water on sodium peroxide?
0%
a) H2
0%
b) N2
0%
c) O2
0%
d) CO2
Explanation
2Na2O2 + 2H2O → 4NaOH + O2 Answer: (c)
Q.23
By which of the following SO2 is formed ... [ BHU 1999]
0%
a) Reaction of dil H2SO4 with O2
0%
b) Hydrolysis of dil H2SO4
0%
c)Reaction of conc H2SO4
0%
d) None
Explanation
Cu + 2H2SO4 →CuSO4 + SO2 + H2O Answer: (c)
Q.24
Which of the following is not reducing agent? [ DEC 2000]
0%
a) SO2
0%
b) H2O2
0%
c) CO2
0%
d) NO2
Explanation
CO2 can not be further oxidised hence it cannot act as reducing agent Answer: (c)
Q.25
Which of the following causes damage to the building containing calcium and responsible for cough and choking in human .. [ Manipal PMT 2001]
0%
a) Sulphur
0%
b) Carbon
0%
c) Nitrogen dioxide
0%
d) Sulphur dioxide
Explanation
Answer:(d)
0 h : 0 m : 1 s
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