Q.1
The correct structure of tribromooctaoxide is ... [ NEET 2019]
  • a)
    ch-18_qn-1choice_img_no1.png
  • b)
    ch-18_qn-1choice_img_no2.png
  • c)
    ch-18_qn-1choice_img_no3.png
  • d)
    ch-18_qn-1choice_img_no4.png
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
  • a) a - (i); b - (ii); c - (iii); d - (iv)
  • b) a - (ii); b - (iv); c - (i); d - (iii)
  • c) a - (iii); b - (iv); c - (ii); d - (i)
  • d) (iv) (iii) (ii) (i)
Q.3
Which of the following statements is not true for halogens ? [NEET 2018]
  • a) All but fluorine show positive oxidation states.
  • b) All are oxidizing agents.
  • c) All form monobasic oxyacids.
  • 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]
  • a) four
  • b) two
  • c) one
  • d) three
Q.5
Which of the following is antiseptic? [Bihar CEE 2002]
  • a) I
  • b) Br
  • c) Cl
  • d) F
Q.6
An element M as an atomic mass 19 and atomic numberIts ion is represented by
  • a) M+
  • b) M2+
  • c) M-
  • d) M2-
Q.7
The shape of the molecule SF3Cl3 is .. [ kerala CEE 2000]
  • a) Trigonal bipyramidal
  • b) Cubic
  • c) Octahedral
  • 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]
  • a) Br2 , KBrO3
  • b) Cl2, KClO3
  • c) I2, NaIO3
  • d) Cl2, NaClO3
Q.9
Freon is used as .. [ DPMT 1999]
  • a) Refrigerant
  • b) Catalyst
  • c) Oxidant
  • d) Both (b) and (c)
Q.10
Which of the following has the strongest bond? [ DEC 2001]
  • a) F-B
  • b) F-Cl
  • c) F-Br
  • 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]
  • a) +5
  • b) -1
  • c) +3
  • d) +1
Q.12
Consider the following reaction Br2 + 2NaOH(dil.) → Product The product of the above reactions are [ BVP Pune 2002]
  • a) NaBrO + NaBrO2 + H2O
  • b) NaBrO + NaBr + H2O
  • c) NaBr ++ H2O
  • d) NaBrO + H2O
Q.13
The correct order of acidic strength is ... [ IIT screening test 2000]
  • a) Cl2O7 > SO2 > P4O10
  • b) CO2 > N2O5 > SO3
  • c) Na2O > MgO > Al2O3
  • d) K2O > CaO > MgO
Q.14
The correct order of electron affinity ( negative value) among the following is .. [ Kerala CEE 2000 ]
  • a) F > Cl > Br
  • b) Br > Cl > F
  • c) Cl > F > Br
  • d) Br > F > Cl
Q.15
Which of the following is not linear? [ DEC 2001]
  • a) CO2
  • b) ClO2
  • c) I3-
  • d) None of these
Q.16
Which of the following statement is not feasible? [ CBSE PMT 2002]
  • a) 2KI + Br2 → 2KBr + I2
  • b) 2KBr + I2 → 2KI + Br2
  • c) 2KBr + Cl2 → 2KCl + Br2
  • d) 2H2O + 2F2 → 4HF + O2
Q.17
Which of the following statements is true? [ CBSE PMT 2002]
  • a) Silicon exhibits 4 coordination number in its compounds
  • b) Bond energy of F2 is less than Cl2
  • c) Mn(III) oxidation state is more stable than Mn(II) in aqueous state
  • 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]
  • a) I2 > Cl2 > Br2
  • b) Br2 >Br2 > Cl2
  • c) I2 > Br2 > Cl2
  • d) Cl2 > Br2 > I2
Q.19
The hybridization in ICl7 is .. [ DEC 2000]
  • a) sp3d3
  • b) d2sp3
  • c) sp3d
  • d) sp3
Q.20
When KI and CuSO4 solution are mixed, It gives
  • a) H2SO4 + I2
  • b) Cu2I2 + K2SO4
  • c) CuI2 + K2SO4
  • d) Na2SO4 + I2
Q.21
The reaction of KMnO4 and HCl results in ... [CPMT 2000]
  • a) Oxidation of Mn in KMnO4
  • b) Reduction of Mn in KMnO4
  • c) Oxidation of Mn in KMNO4 and production of H2
  • d) Reduction of Mn in KMnO4 and production of Cl2
Q.22
The set with correct order of acidity is .. [ IIT Screening test 2001]
  • a) HClO < HClO2 < HClO3
  • b) HClO4 < HClO3 > HCl2 < HClO
  • c) HClO < HClO2 < HClO3 < HClO2
  • d) HClO4 < HClO2 < HClO3 < HClO
Q.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]
  • a) Chloride
  • b) Conc.H2SO4
  • c) Conc. NaOH
  • d) MNO2 + conc H2SO4
Q.24
In inerhalogen compounds, the maximum number of halogen atoms present are ... [ DPMT 2002]
  • a) 2
  • b) 4
  • c) 6
  • d) 8
Q.25
Chlorine dioxide is best prepared by passing dry .. [ Kerala MEE 2003]
  • a) Chlorine gas over hot HgO
  • b) Cl2 and O2 gas over hot Pt catalyst
  • c) HCl and O2 overhotAg2O
  • d) Cl2 over hot silver chlorate
Q.26
Which one of the following elements shows different oxidation states? [ EAMCET 2001]
  • a) Sodium
  • b) Fluorine
  • c) Chlorine
  • d) Potassium
Q.27
The correct decreasing order of acidic character is ... [ Chd. CET 2000]
  • a) HClO > HBrO > HIO
  • b) HIO > HBrO > HClO
  • c) HBrO > HIO > HClO
  • d) HClO > HIO > HBrO
Q.28
Which of the following reaction involves oxidation and reduction? [ EAMCET 1999]
  • a) H2 + Br2 → 2HBr
  • b) HBr + AgNO3 → AgBr + HNO3
  • c) NaBr + HCl → NaCl + HBr
  • d) Na2O + H2SO4 → Na2SO4
Q.29
When I2 is passed through KCl, KF, KBr solutions .. [ Haryana CEET 2000]
  • a) Cl2 and Br2 are evolved
  • b) Cl2 is evolved
  • c) Cl2, Br2, F2 are evolved
  • d) None of these
Q.30
The reaction 3ClO-(aq) → ClO3-(aq) + 2Cl-(aq) is an example of ... [ IIT screening test 2001]
  • a) Oxidation reaction
  • b) Reduction reaction
  • c) Disproportionation reaction
  • d) Decomposition reaction
0 h : 0 m : 1 s