MCQGeeks
0 : 0 : 1
CBSE
JEE
NTSE
NEET
English
UK Quiz
Quiz
Driving Test
Practice
Games
NEET
NEET Chemistry MCQ
Halogen Family Mcq Neet Chemistry
Quiz 2
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
Q.1
The comparatively high b.p. of HF is due to .. [ Kerala MEE 2001]
0%
a) High reactivity of fluorine
0%
b) Small size of hydrogen atom
0%
c) Formation of hydrogen bonds and consequent association
0%
d) Small size of fluorine atom
Explanation
Answer:(c)
Q.2
Which of the following statement is not true? [ CBSE PMT 2003]
0%
a) Among halide ions, iodide is the most powerful reducing agent
0%
b) Fluorine is the only halogen that does not show a variable oxidation state
0%
c) HOCl is a stronger acid than HOBr
0%
d) HF is a stronger acid than HCl
Explanation
HF is a weaker acid then HCl because of Strong bonding in HF Answer: (d)
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]
0%
a) Oxygen in air reacts with the emitted HCl gas to form a cloud of chlorine
0%
b) Strong affinity of HCl gas for moisture in air results in forming of droplets of liquid solution which appears like a clouds smoke
0%
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
0%
d) Concentrated HCl emits strongly smelling HCl gas all the time
Explanation
Answer: (b)
Q.4
Which of the following elements exhibits the most basic properties? [ MP PMT 2001]
0%
a) F
0%
b) Cl
0%
c) Br
0%
d) I
Explanation
Down the group basic property increases Answer: (d)
Q.5
Which of the following is most volatile?
0%
a) HI
0%
b) HBr
0%
c) HCl
0%
d) HF
Explanation
Answer:(c)
Q.6
Bleaching powder is obtained by treating Cl2 with [ Pb. PMT 1999]
0%
a) CaO
0%
b) CaCO3
0%
c) CaOCl2
0%
d) Ca(OH)2
Explanation
Ca(OH)2 + Cl2 (dry) → CaOCl2 + H2O Answer: (d)
Q.7
The halogen that is most easily reduced is .. [ MP PMT 2000]
0%
a) F2
0%
b) Cl2
0%
c) Br2
0%
d) I2
Explanation
F2 is strongest oxidising agent, hence it can be easily reduced Answer: (a)
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]
0%
a) Br2
0%
b) I2
0%
c) Cl2
0%
d) F2
Explanation
More is the bond energy more the stronger bond Answer: (c)
Q.9
Fluorine molecule is formed by ... [ Kerala MEE 2001]
0%
a) The axial p-p orbital overlap
0%
b) The sideways p-p orbital overlap
0%
c) The s-s orbital overlap
0%
d) ThE s-p orbital overlap
Explanation
Answer:(a)
Q.10
Mark the element which displaces three halogens from their compounds [ BHU 1998]
0%
a) F
0%
b) Cl
0%
c) Br
0%
d) I
Explanation
F is stronger oxidising agent and displaces other three halogens form their compounds Answer: (a)
Q.11
Which of the following represents the correct order of increasing pKa values of the given acids? [ IAS prelims 1993]
0%
a) HClO4 < HNO3 < H2CO3 < B(OH)3
0%
b) HNO3 < HClO4 < B(OH)3 < H2CO3
0%
c) B(OH)3 < H2CO3 < HClO4 < HNO3
0%
d) HClO4 < HNO3 < HClO4 < HNO3
Explanation
Stronger than acid lower the value of pKa More the oxidation number of central atom stronger the acid Answer: (a)
Q.12
When chlorine is passed over dry slaked lime at room temperature, the main reaction product is [ CBSE PMT 1992]
0%
a) Ca(ClO2)2
0%
b) CaCl2
0%
c) CaOCl2
0%
d) Ca(OCl)2
Explanation
2Cl2 + 2 Ca(OH)2 → Ca(OCl)2 + CaCl2 + 2 H2O If slaked lime is little moist then it produce bleaching powder Ca(OH)2 + Cl2 → CaOCl2 + H2O Answer: (c)
Q.13
Which one of the following is most basic [ AFMC 1994]
0%
a) F-
0%
b) Cl-
0%
c) Br-
0%
d) I-
Explanation
Down the group basic character increases Answer:(d)
Q.14
the shape of IF7 molecule is [ EAMCET 1994]
0%
a) Octahedral
0%
b) tetrahedral
0%
c) Trigonal bipyramidal
0%
d) Pentagonal bipyramidal
Explanation
Answer: (d)
Q.15
Hydrogen bonding does not play any role in boiling of
0%
a) NH3
0%
b) H2O
0%
c) HI
0%
d) C2H5OH
Explanation
There is no hydrogen bonding in HI Answer: (a)
Q.16
Arrange the acids (I)H2SO3 (II) H3PO3 (III) HClO3 in the decreasing order of acidity
0%
a) I > III > II
0%
b) I > II > III
0%
c) III > I > II
0%
d) II > III > I
Explanation
With the same number of oxygens around Central atom, acid strength increases with the electronegativity of Central atom Electronegativity of central atom is Cl > S > P Answer: (d)
Q.17
Glass reacts with HF to produce .. [ EAMCET 1994]
0%
a) Na3AlF6
0%
b) H2SiF6
0%
c) H2SiO3
0%
d) SiF4
Explanation
Answer:(d)
Q.18
Hydrogen iodide can not be prepared by the action of Con H2SO4 on potassium iodide because [ Bihar CEE 1995]
0%
a) HI is stronger than H2SO4
0%
b) HI is more volatile than H2SO4
0%
c) H2SO4 is an oxidising agent
0%
d) H2SO4 forms complex
Explanation
H2SO4 will oxidise HI to Iodine Answer: (c)
Q.19
On oxidation with iodine sulphite ion is transformed to ... [ CPMT 1992]
0%
a) S4O62-
0%
b) S2O62-
0%
c) SO42-
0%
d) SO32-
Explanation
I2 being a weak oxidising agent, oxidises SO32- to SO42- Answer: (c)
Q.20
A solution of potassium bromide is treated with each of the following. Which one would liberate bromine? [ CBSE PMT 1993]
0%
a) Hydrogen iodide
0%
b) Sulphur dioxide
0%
c) Chlorine
0%
d) Iodine
Explanation
2KBr + Cl2 → 2KCl + Br2 Cl2 is strong oxidising agent displaces weak oxidizing agent Br2 from it salt form Answer: (c)
Q.21
Which of the following pairs will give chlorine gas most quickly, upon reaction? [ DEC 1994]
0%
a) HCl and KMnO4
0%
b) NaCl and H3PO4
0%
c) NaCl and MnO2
0%
d) CaCl2 and Br2
Explanation
Con HCl reacts with KMnO4 solution most readily and gives Cl2 gas 2KMnO4 + 16HCl → 2KCl + 2MnCl2 + 5Cl2 +8H2O Answer:(a)
Q.22
In the reaction 3Br2 + 6CO32- + 3H2O → 5Br- + BrO3- + 6HCO3-
0%
a) Bromine is oxidised and carbonate is reduced
0%
b) Bromine is both oxidised and reduced
0%
c) Bromine is reduced and water is oxidised
0%
d) Bromine is neither oxidised nor reduced
Explanation
Bromine is reduced from 0 to -1 in Br- and oxidised to +5 in BrO3- Answer: (b)
Q.23
Fluorine is better oxidising agent than BrIt is due to ... [ EAMCET 1992]
0%
a) Small size of fluorine
0%
b) More electron repulsion in fluorine
0%
c) More electronegativity of fluorine
0%
d) Non metallic nature of fluorine
Explanation
Answer: (c)
Q.24
Ozonised oxygen can be obtained from H2O by the action of ... [ Haryana CEET 1994]
0%
a) Conc. H2SO4
0%
b) KMnO4
0%
c) MnO42-
0%
d) F2
Explanation
F reacts strongly with H2O to give mixture of O2 and O3 2F2 + 2H2O → 4HF + O2 3F2 + 3H2 → 6HF + O3 Answer: (d)
Q.25
Which one of the following elements can have both positive and negative oxidation state? [ AFMC 1994]
0%
a) F
0%
b) I
0%
c) Li
0%
d) He
Explanation
Answer:(b)
Q.26
he formula for calcium chlorite is .. [ CBSE PMT 1996]
0%
a) Ca(ClO4)2
0%
b) Ca(ClO3)2
0%
c) CaClO2
0%
d) Ca(ClO2)2
Explanation
Answer: (d)
Q.27
In the manufacture of bromine from sea water, the mother liquor containing bromine is treated with .. [ CBSE PMT 1992]
0%
a) Carbon dioxide
0%
b) Chlorine
0%
c) Iodine
0%
d) Sulphur dioxide
Explanation
Chlorine stronger oxidiing agent thus displaces Bromine from mother liquor containing bromine Answer: (b)
Q.28
The correct sequence of arrangement of the following compounds in order of decreasing oxidation number of iodine is .. [ IAS 1993]
0%
a) HIO4, HI, I2, ICl5
0%
b) HIO4, ICl5 , HI, I2
0%
c) ICl5, HI4, I2, HI
0%
d) HIO4, ICl5, I2, HI
Explanation
Answer: (d)
Q.29
The solubility of iodine in water may be increased by adding [ DPMT 1994]
0%
a) Potassium iodide
0%
b) Chloroform
0%
c) Carbon disulphide
0%
d) Sodium thiosulphate
Explanation
It is due to formation of complex compound KI3 Answer:(a)
Q.30
In the reaction 2Br- + X2 → Br2 + 2X- ; X2 is ... [ EAMCET 1995]
0%
a) Cl2
0%
b) Br2
0%
c) I2
0%
d) N2
Explanation
Answer: (a)
0 h : 0 m : 1 s
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
Report Question
×
What's an issue?
Question is wrong
Answer is wrong
Other Reason
Want to elaborate a bit more? (optional)
Support mcqgeeks.com by disabling your adblocker.
×
Please disable the adBlock and continue.
Thank you.
Reload page