Q.1
Chlorine gas is dried over [ CPMT 1980]
  • a) CaO
  • b) NaOH
  • c) KOH
  • d) Con H2SO4
Q.2
A 500gm toothpaste sample has 0.2gm fluoride concentration. What is the concentration of F- ions in terms of ppm level [ AIIMS 1992]
  • a) 250
  • b) 200
  • c) 400
  • d) 1000
Q.3
Chlorine gas is dried over [ CPMT 1980]
  • a) CaO
  • b) NaOH
  • c) KOH
  • d) Con H2SO4
Q.4
Which halogen is most electropositive [ MP PMT 1988]
  • a) F
  • b) Cl
  • c) Br
  • d) I
Q.5
Hydrogen fluoride is a liquid unlike other hydrogen halides because [ MP PMT 1990]
  • a) Fluorine atom is smaller in size
  • b) HF is the weakest acid
  • c) Fluorine is highly reactive
  • d) HF molecules form intermolecular H-bonds
Q.6
Elements of which of the following groups will form anions most readily? [ CBSE PMT 1992]
  • a) Oxygen family
  • b) Nitrogen family
  • c) Halogens
  • d) Alkali metals
Q.7
Which of the following is a pseudohalide? [ AIIMS 1980]
  • a) CN-
  • b) ICl
  • c) IF5
  • d) I3-
Q.8
A ga reacts with CaO but not with NaHCOthe gas is .. [AFMC 1987]
  • a) CO2
  • b) Cl2
  • c) N2
  • d) O2
Q.9
Which of the following is strongest acid [ IIT 1989]
  • a) ClO3(OH)
  • b) ClO2(OH)
  • c) SO(OH)2
  • d) SO2(OH)2
Q.10
The correct increasing order of ionic size is .. [ IIT 1991]
  • a) Mg2+ < Na+ < F- < O2- < N3-
  • b) Na+ < Mg2+ < F- < O2+ < N3-
  • c) N3- < O2- < F- < Na+ < Mg2+
  • d) F- < N3- < O2- < Mg2+ < Na+
Q.11
Chloride acts as a bleaching agent only in presence of ... [ IIT 1983]
  • a) Dry air
  • b) Moisture
  • c) Sunlight
  • d) Pure oxygen
Q.12
The correct increasing order of bond dissociation energy for N2, O2, F2, cl2 is [ IIT 1988]
  • a) N2 < O2 < F2 < Cl2
  • b) F2 < Cl2 < O2
  • c)F2 < Cl2 < N2 < O2
  • d) N2 < Cl2 < F2
Q.13
Which of the following halogen oxide is ionic? [ CPMT 1989]
  • a) ClO2
  • b) BrO2
  • c) I2O5
  • d) I4O9
Q.14
As the atomic number of Halogens increases the halogens .. [ MP PMT 1991]
  • a) Lose their outermost electrons less readily
  • b) Become lighter in colour
  • c) Gain electrons less easily
  • d) Becomes less dense
Q.15
Hydrogen bond is strongest in [ IIT 1986]
  • a) O - H … S
  • b) S - H … O
  • c) F - H … F
  • d) F - H … O
Q.16
Euchlorine is a mixture of .. [CPMT 1988]
  • a) Cl2 and SO2
  • b) Cl2 and ClO2
  • c) Cl2 and CO
  • d) None of these
Q.17
Which of the following is a false statement? [ Pb CET sample paper 1990]
  • a) Halogens are strongly oxidising agents
  • b) Halogens shows only -1 oxidation state
  • c) HF molecules form intermolecular hydrogn bonding
  • d) Fluorine is highly reactive
Q.18
Strongest hydrogen bond is shown by [ CBSE PMT 1992]
  • a) Water
  • b) Ammonia
  • c) Hydrogen fluoride
  • d) Hydrogen sulphide
Q.19
Iodine is formed when KI reacts with a solution of [ MLNR 1984]
  • a) ZnSO4
  • b) CuSO4
  • c) FeSO4
  • d) (NH4)2SO4
Q.20
Bromine can be liberated from potassium bromide solution by the action of .. [IIT 1987]
  • a) Iodine solution
  • b) Chlorine water
  • c) Sodium chloride
  • d) Potassium iodide
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