Q.1.
The correct structure of tribromooctaoxide is ... [ NEET 2019]
-
48%
a)
-
30%
b)
-
11%
c)
-
11%
d)
Q.2.
tion Q2) Match the following : Which of the following is the correct option?
| (a) Pure nitrogen | (i) Chlorine |
| (b) Haber process | (ii) Sulphuric acid |
| (c) Contact process | (iii)Ammonia |
| (d) Deacon’s process | (iv) Sodium azide or Barium azide |
-
8%
a) a - (i); b - (ii); c - (iii); d - (iv)
-
27%
b) a - (ii); b - (iv); c - (i); d - (iii)
-
23%
c) a - (iii); b - (iv); c - (ii); d - (i)
-
42%
d) (iv) (iii) (ii) (i)
Q.3.
Which of the following statements is not true for halogens ? [NEET 2018]
-
64%
a) All but fluorine show positive oxidation states.
-
7%
b) All are oxidizing agents.
-
14%
c) All form monobasic oxyacids.
-
14%
d) Chlorine has the highest electron-gain enthalpy.
Q.4.
In the structure of ClF3, the number of lone pairs of electrons on central atom ‘Cl’ is .... [NEET 2018]
-
14%
a) four
-
38%
b) two
-
28%
c) one
-
21%
d) three
Q.5.
Which of the following is antiseptic? [Bihar CEE 2002]
-
58%
a) I
-
15%
b) Br
-
19%
c) Cl
-
8%
d) F
Q.6.
An element M as an atomic mass 19 and atomic numberIts ion is represented by
-
45%
a) M+
-
35%
b) M2+
-
15%
c) M-
-
5%
d) M2-
Q.7.
The shape of the molecule SF3Cl3 is .. [ kerala CEE 2000]
-
26%
a) Trigonal bipyramidal
-
9%
b) Cubic
-
57%
c) Octahedral
-
9%
d) Square pyramidal
Q.8.
A greenish yellow gas reacts with an alkali metal hydroxide to form a halate which can be used in fire works and safety matches. the gas and halate respectively... [ Roorkee screening test 2000]
-
32%
a) Br2 , KBrO3
-
32%
b) Cl2, KClO3
-
11%
c) I2, NaIO3
-
26%
d) Cl2, NaClO3
Q.9.
Freon is used as .. [ DPMT 1999]
-
53%
a) Refrigerant
-
11%
b) Catalyst
-
0%
c) Oxidant
-
37%
d) Both (b) and (c)
Q.10.
Which of the following has the strongest bond? [ DEC 2001]
-
33%
a) F-B
-
24%
b) F-Cl
-
29%
c) F-Br
-
14%
d) Cl-Br
Q.11.
Consider the following reaction : 6NaOH + 3Cl2 → 5NaCl + A + 3H2O What is the oxidation number of chlorine in 'A'... [ EAMCET 2001]
-
22%
a) +5
-
44%
b) -1
-
22%
c) +3
-
11%
d) +1
Q.12.
Consider the following reaction Br2 + 2NaOH(dil.) → Product The product of the above reactions are [ BVP Pune 2002]
-
6%
a) NaBrO + NaBrO2 + H2O
-
50%
b) NaBrO + NaBr + H2O
-
17%
c) NaBr ++ H2O
-
28%
d) NaBrO + H2O
Q.13.
The correct order of acidic strength is ... [ IIT screening test 2000]
-
53%
a) Cl2O7 > SO2 > P4O10
-
0%
b) CO2 > N2O5 > SO3
-
35%
c) Na2O > MgO > Al2O3
-
12%
d) K2O > CaO > MgO
Q.14.
The correct order of electron affinity ( negative value) among the following is .. [ Kerala CEE 2000 ]
-
31%
a) F > Cl > Br
-
19%
b) Br > Cl > F
-
44%
c) Cl > F > Br
-
6%
d) Br > F > Cl
Q.15.
Which of the following is not linear? [ DEC 2001]
-
6%
a) CO2
-
44%
b) ClO2
-
25%
c) I3-
-
25%
d) None of these
Q.16.
Which of the following statement is not feasible? [ CBSE PMT 2002]
-
8%
a) 2KI + Br2 → 2KBr + I2
-
46%
b) 2KBr + I2 → 2KI + Br2
-
31%
c) 2KBr + Cl2 → 2KCl + Br2
-
15%
d) 2H2O + 2F2 → 4HF + O2
Q.17.
Which of the following statements is true? [ CBSE PMT 2002]
-
8%
a) Silicon exhibits 4 coordination number in its compounds
-
38%
b) Bond energy of F2 is less than Cl2
-
23%
c) Mn(III) oxidation state is more stable than Mn(II) in aqueous state
-
31%
d) Elements of 15th group shows only +3 and +5 oxidation states
Q.18.
Which one of the following order is correct for the bond energies of halogen molecules? [ EAMCET 2001]
-
36%
a) I2 > Cl2 > Br2
-
0%
b) Br2 >Br2 > Cl2
-
14%
c) I2 > Br2 > Cl2
-
50%
d) Cl2 > Br2 > I2
Q.19.
The hybridization in ICl7 is .. [ DEC 2000]
-
50%
a) sp3d3
-
36%
b) d2sp3
-
7%
c) sp3d
-
7%
d) sp3
Q.20.
When KI and CuSO4 solution are mixed, It gives
-
18%
a) H2SO4 + I2
-
36%
b) Cu2I2 + K2SO4
-
27%
c) CuI2 + K2SO4
-
18%
d) Na2SO4 + I2
Q.21.
The reaction of KMnO4 and HCl results in ... [CPMT 2000]
-
8%
a) Oxidation of Mn in KMnO4
-
31%
b) Reduction of Mn in KMnO4
-
38%
c) Oxidation of Mn in KMNO4 and production of H2
-
23%
d) Reduction of Mn in KMnO4 and production of Cl2
Q.22.
The set with correct order of acidity is .. [ IIT Screening test 2001]
-
31%
a) HClO < HClO2 < HClO3
- 15%
b) HClO4 < HClO3 > HCl2 < HClO- 54%
c) HClO < HClO2 < HClO3 < HClO2- 0%
d) HClO4 < HClO2 < HClO3 < HClOQ.23.To obtain iodine, sea weeds are dried, burnt and extracted in hot water. The mother liquor left after the crystallization of certain salts treated with .. [ Kerala MEE 2001]-
8%
a) Chloride
-
23%
b) Conc.H2SO4
-
31%
c) Conc. NaOH
-
38%
d) MNO2 + conc H2SO4
Q.24.In inerhalogen compounds, the maximum number of halogen atoms present are ... [ DPMT 2002]-
8%
a) 2
-
15%
b) 4
-
23%
c) 6
-
54%
d) 8
Q.25.Chlorine dioxide is best prepared by passing dry .. [ Kerala MEE 2003]-
15%
a) Chlorine gas over hot HgO
-
46%
b) Cl2 and O2 gas over hot Pt catalyst
-
15%
c) HCl and O2 overhotAg2O
-
23%
d) Cl2 over hot silver chlorate
Q.26.Which one of the following elements shows different oxidation states? [ EAMCET 2001]-
8%
a) Sodium
-
23%
b) Fluorine
-
46%
c) Chlorine
-
23%
d) Potassium
Q.27.The correct decreasing order of acidic character is ... [ Chd. CET 2000]-
36%
a) HClO > HBrO > HIO
-
21%
b) HIO > HBrO > HClO
-
14%
c) HBrO > HIO > HClO
-
29%
d) HClO > HIO > HBrO
Q.28.Which of the following reaction involves oxidation and reduction? [ EAMCET 1999]-
42%
a) H2 + Br2 → 2HBr
-
50%
b) HBr + AgNO3 → AgBr + HNO3
-
0%
c) NaBr + HCl → NaCl + HBr
-
8%
d) Na2O + H2SO4 → Na2SO4
Q.29.When I2 is passed through KCl, KF, KBr solutions .. [ Haryana CEET 2000]-
25%
a) Cl2 and Br2 are evolved
-
0%
b) Cl2 is evolved
-
42%
c) Cl2, Br2, F2 are evolved
-
33%
d) None of these
Q.30.The reaction 3ClO-(aq) → ClO3-(aq) + 2Cl-(aq) is an example of ... [ IIT screening test 2001]-
23%
a) Oxidation reaction
-
15%
b) Reduction reaction
-
54%
c) Disproportionation reaction
-
8%
d) Decomposition reaction
- 15%