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NEET Chemistry MCQ
Halogen Family Mcq Neet Chemistry
Quiz 2
Solution
Q.1.
The comparatively high b.p. of HF is due to .. [ Kerala MEE 2001]
44%
a) High reactivity of fluorine
22%
b) Small size of hydrogen atom
33%
c) Formation of hydrogen bonds and consequent association
0%
d) Small size of fluorine atom
Q.2.
Which of the following statement is not true? [ CBSE PMT 2003]
11%
a) Among halide ions, iodide is the most powerful reducing agent
44%
b) Fluorine is the only halogen that does not show a variable oxidation state
11%
c) HOCl is a stronger acid than HOBr
33%
d) HF is a stronger acid than HCl
Q.3.
Concentrated hydrochloric acid when kept in open air sometimes produces a cloud of white fumes. The explanation for it is that ... [ AIEEE 2003]
14%
a) Oxygen in air reacts with the emitted HCl gas to form a cloud of chlorine
29%
b) Strong affinity of HCl gas for moisture in air results in forming of droplets of liquid solution which appears like a clouds smoke
29%
c) Due to strong affinity for water, conc HCl pulls moisture of air towards itself. This moisture forms droplets of water and hence the cloud
29%
d) Concentrated HCl emits strongly smelling HCl gas all the time
Q.4.
Which of the following elements exhibits the most basic properties? [ MP PMT 2001]
0%
a) F
62%
b) Cl
12%
c) Br
25%
d) I
Q.5.
Which of the following is most volatile?
12%
a) HI
12%
b) HBr
62%
c) HCl
12%
d) HF
Q.6.
Bleaching powder is obtained by treating Cl2 with [ Pb. PMT 1999]
0%
a) CaO
29%
b) CaCO3
29%
c) CaOCl2
43%
d) Ca(OH)2
Q.7.
The halogen that is most easily reduced is .. [ MP PMT 2000]
29%
a) F2
29%
b) Cl2
0%
c) Br2
43%
d) I2
Q.8.
The bond energies of F2, Cl2, Br2 and I2 are 37, 58, 46 and 36 kcal mol- respectively. the strongest bond is present in ... [ AIIMS 2001]
57%
a) Br2
0%
b) I2
29%
c) Cl2
14%
d) F2
Q.9.
Fluorine molecule is formed by ... [ Kerala MEE 2001]
17%
a) The axial p-p orbital overlap
17%
b) The sideways p-p orbital overlap
33%
c) The s-s orbital overlap
33%
d) ThE s-p orbital overlap
Q.10.
Mark the element which displaces three halogens from their compounds [ BHU 1998]
14%
a) F
29%
b) Cl
57%
c) Br
0%
d) I
Q.11.
Which of the following represents the correct order of increasing pKa values of the given acids? [ IAS prelims 1993]
50%
a) HClO4 < HNO3 < H2CO3 < B(OH)3
0%
b) HNO3 < HClO4 < B(OH)3 < H2CO3
0%
c) B(OH)3 < H2CO3 < HClO4 < HNO3
50%
d) HClO4 < HNO3 < HClO4 < HNO3
Q.12.
When chlorine is passed over dry slaked lime at room temperature, the main reaction product is [ CBSE PMT 1992]
14%
a) Ca(ClO2)2
29%
b) CaCl2
43%
c) CaOCl2
14%
d) Ca(OCl)2
Q.13.
Which one of the following is most basic [ AFMC 1994]
29%
a) F-
29%
b) Cl-
0%
c) Br-
43%
d) I-
Q.14.
the shape of IF7 molecule is [ EAMCET 1994]
29%
a) Octahedral
0%
b) tetrahedral
43%
c) Trigonal bipyramidal
29%
d) Pentagonal bipyramidal
Q.15.
Hydrogen bonding does not play any role in boiling of
29%
a) NH3
0%
b) H2O
14%
c) HI
57%
d) C2H5OH
Q.16.
Arrange the acids (I)H2SO3 (II) H3PO3 (III) HClO3 in the decreasing order of acidity
43%
a) I > III > II
29%
b) I > II > III
0%
c) III > I > II
29%
d) II > III > I
Q.17.
Glass reacts with HF to produce .. [ EAMCET 1994]
0%
a) Na3AlF6
50%
b) H2SiF6
25%
c) H2SiO3
25%
d) SiF4
Q.18.
Hydrogen iodide can not be prepared by the action of Con H2SO4 on potassium iodide because [ Bihar CEE 1995]
17%
a) HI is stronger than H2SO4
0%
b) HI is more volatile than H2SO4
33%
c) H2SO4 is an oxidising agent
50%
d) H2SO4 forms complex
Q.19.
On oxidation with iodine sulphite ion is transformed to ... [ CPMT 1992]
14%
a) S4O62-
14%
b) S2O62-
29%
c) SO42-
43%
d) SO32-
Q.20.
A solution of potassium bromide is treated with each of the following. Which one would liberate bromine? [ CBSE PMT 1993]
43%
a) Hydrogen iodide
0%
b) Sulphur dioxide
57%
c) Chlorine
0%
d) Iodine
Q.21.
Which of the following pairs will give chlorine gas most quickly, upon reaction? [ DEC 1994]
43%
a) HCl and KMnO4
0%
b) NaCl and H3PO4
29%
c) NaCl and MnO2
29%
d) CaCl2 and Br2
Q.22.
In the reaction 3Br2 + 6CO32- + 3H2O → 5Br- + BrO3- + 6HCO3-
0%
a) Bromine is oxidised and carbonate is reduced
33%
b) Bromine is both oxidised and reduced
50%
c) Bromine is reduced and water is oxidised
17%
d) Bromine is neither oxidised nor reduced
Q.23.
Fluorine is better oxidising agent than BrIt is due to ... [ EAMCET 1992]
14%
a) Small size of fluorine
29%
b) More electron repulsion in fluorine
43%
c) More electronegativity of fluorine
14%
d) Non metallic nature of fluorine
Q.24.
Ozonised oxygen can be obtained from H2O by the action of ... [ Haryana CEET 1994]
43%
a) Conc. H2SO4
14%
b) KMnO4
0%
c) MnO42-
43%
d) F2
Q.25.
Which one of the following elements can have both positive and negative oxidation state? [ AFMC 1994]
0%
a) F
50%
b) I
17%
c) Li
33%
d) He
Q.26.
he formula for calcium chlorite is .. [ CBSE PMT 1996]
0%
a) Ca(ClO4)2
14%
b) Ca(ClO3)2
43%
c) CaClO2
43%
d) Ca(ClO2)2
Q.27.
In the manufacture of bromine from sea water, the mother liquor containing bromine is treated with .. [ CBSE PMT 1992]
57%
a) Carbon dioxide
29%
b) Chlorine
14%
c) Iodine
0%
d) Sulphur dioxide
Q.28.
The correct sequence of arrangement of the following compounds in order of decreasing oxidation number of iodine is .. [ IAS 1993]
33%
a) HIO4, HI, I2, ICl5
17%
b) HIO4, ICl5 , HI, I2
17%
c) ICl5, HI4, I2, HI
33%
d) HIO4, ICl5, I2, HI
Q.29.
The solubility of iodine in water may be increased by adding [ DPMT 1994]
29%
a) Potassium iodide
29%
b) Chloroform
29%
c) Carbon disulphide
14%
d) Sodium thiosulphate
Q.30.
In the reaction 2Br- + X2 → Br2 + 2X- ; X2 is ... [ EAMCET 1995]
33%
a) Cl2
0%
b) Br2
67%
c) I2
0%
d) N2
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