Q.1
Which of the following species has four lone pairs of electrons? [ CBSE PMT 1993]
  • a) I
  • b) O-
  • c) Cl-
  • d) He
Q.2
The element which liberate O2 from water is
  • a) P
  • b) N
  • c) F
  • d) I
Q.3
Which one of the following oxyacids of chlorine is least oxidizing in nature? [ AIIMS 1994]
  • a) HOCl
  • b) HClO2
  • c) HClO3
  • d) HClO4
Q.4
Hydrochloric acid at 25°C is .. [ Pb CET 1995]
  • a) Ionic and liquid
  • b) Covalent and liquid
  • c) Ionic and gas
  • d) None of above
Q.5
The type of hybrid orbitals used by ClO2- is .. [ IIT 1992]
  • a) sp3
  • b) sp2
  • c) sp
  • d) None of these
Q.6
Which of the following elements is extracted commercially by the electrolysis of an aqueous solution of its compound?
  • a) Cl
  • b) Al
  • c) Br
  • d) Na
Q.7
HI can be prepared by all the following methods except.. [ CBSE PMT 1994]
  • a) PI3 + H2O
  • b) KI + H2SO4
  • c) H2 + I2 in presence of Pt
  • d) I2 + H2S
Q.8
The element which never acts as reducing agent in a chemical reaction is [ Bihar CEE 1995]
  • d) C
  • a) O
  • b) Li
  • c) F
Q.9
When cold NaOH reacts with Cl2 which of the following is formed
  • a) NaClO
  • b) NaClO2
  • c) NaClO3
  • d) None
Q.10
When I2 is dissolved in CCl4 the colour that results is ... [ AFMC 1993]
  • a) Brown
  • b) Violet
  • c) Colourless
  • d) Bluish green
Q.11
1.0 M solution of which of the following slats is most basic? [ DPMT 1994]
  • a) NaClO
  • b) NaClO4
  • c) NaClO2
  • d) NaClO3
Q.12
Which of the following cannot work as oxidizing agent? [ CPMT 1996]
  • a) O2
  • b) KMnO4
  • c) H2O2
  • d) I-
Q.13
Which one of the following can be purified by sublimation? [ AMU 1992]
  • a) F2
  • b) Cl2
  • c) Br2
  • d) I2
Q.14
Charge distribution in iodine monochloride is best represented as [ IAS prelims 1993]
  • a) I+ Cl-
  • b) Iδ+ Clδ-
  • c) I- Cl+
  • d) Iδ- Clδ+
Q.15
Which one of the following oxides of chlorine is obtained by passing dry chlorine over silver chlorate at 90&dgeC
  • a) Cl2O
  • b) ClO3
  • c) ClO2
  • d) ClO4
Q.16
In the reaction HNO3 + HF → H2NO3- + F- base is .. [ Pb. CET 1995]
  • a) HF
  • b) HNO3
  • c) HF and HNO3
  • d) None
Q.17
Amongst NO3-, AsO33-, CO32- , SO32- and BO33- the non planar species are .. [ GATE 1993]
  • a) CO32-, SO32- and BO33-
  • b) AsO33- , ClO3-, and SO32-
  • c) NO3- , CO32-, and BO33-
  • d) SO32- , NO3- , BOO33-
Q.18
Halogen which can be prepared from caliche is .. [ haryana CEET 1994]
  • a) Cl2
  • b) Br2
  • c) I2
  • d) F2
Q.19
Which among the following is paramagnetic? [ CBSE PMT 1994]
  • a) Cl2O
  • b) ClO2
  • c) Cl2O7
  • d) Cl2O6
Q.20
Which is the weakest out of HF, HCl, HBr and HI? [ MP PMT 1995]
  • a) HF
  • b) HCl
  • c) HBr
  • d) HI
Q.21
When excess of Chlorine reacts with NH3, products formed are..
  • a) NH4Cl and N2
  • b) NCl3 and HCl
  • c) NCl3 and N2
  • d) NH3 and N2
Q.22
In which of the following, oxygen has +2 oxidation number? [ EAMCET 1986]
  • a) F2O
  • b) Cl2O
  • c) Na2O2
  • d) Na2O
Q.23
Which of the following is the true oxide of iodine? [ MP PMT 1988]
  • a) I2O4
  • b) I2O5
  • c) I2O7
  • d) I2O9
Q.24
Which of the following arrangement for the three halogens Cl, Br and I when placed in the order of their increasing electron affinity is correct? [ CPMT 1990]
  • a) Cl, Br, I
  • b) I, Br, Cl
  • c) Br, Cl, I
  • d) I, Cl, Br
Q.25
Of the sodium halides, NaF ha highest melting point because
  • a) Fluorine has the highest electronegativity
  • b) Fluorine has highest ionization energy than any other member of the halogen family
  • c) NaF has the maximum ionic character
  • d) NaF has the minimum ionic character
Q.26
The outermost electronic configuration of the most electronegative element is [ IIT 1988]
  • a) ns2 np3
  • b) ns2 np4
  • c) ns2 np5
  • d) ns2 np6
Q.27
Fluorine is stronger oxidising agent than chlorine in aqueous solution. This is attributed to many factors except [ Pb CET 1989]
  • a) Heat of dissociation
  • b) Electron affinity
  • c) Ionization potential
  • d) Heat of hydration
Q.28
Which statement is correct about halogens? [ EAMCET 1991]
  • a) They are all diatomic and form univalent ions
  • b) They are all capable of exhibiting several oxidation states
  • c) They are all diatomic and form divalent ions
  • d) They can mutually displace each other from the solution of their compounds with metals
Q.29
On boiling an aqueous solution of KClO3 with iodine the following product is obtained? [ NCERT 1980]
  • a) KIO3
  • b) KClO4
  • c) KIO4
  • d) KCl
Q.30
Which of the following has greatest reducing power
  • a) HI
  • b) HBr
  • c) HCl
  • d) HF
0 h : 0 m : 1 s