JEE Questions for Chemistry Class 12 P Block Elements Quiz 17 - MCQExams.com

Correct order of increasing bond angles in following species is

  • Chemistry-Class 12 p Block Elements-2865.png
  • 2)
    Chemistry-Class 12 p Block Elements-2866.png

  • Chemistry-Class 12 p Block Elements-2867.png
  • None of the above
When thiosulphate ion is oxidized by iodine , which one of following ion is produced?

  • Chemistry-Class 12 p Block Elements-2868.png
  • 2)
    Chemistry-Class 12 p Block Elements-2869.png

  • Chemistry-Class 12 p Block Elements-2870.png

  • Chemistry-Class 12 p Block Elements-2871.png
Which one of halogen acids is liquid ?
  • HF
  • HCl
  • HBr
  • HI
When Cl2 is passed through hot & Conc. Solution of KOH following compound is formed.
  • KCl
  • KClO3
  • KClO2
  • KClO4
Chlorine can remove
  • Br from NaBr Sol.
  • F from NaF Sol.
  • Cl from NaCl Sol.
  • F from CaF2 sol.
Which one of following acid is weakest?
  • HClO
  • HBr
  • HClO3
  • HCl
Which of following will displace halogen from solution of halide?
  • Br2 added to NaCl
  • Cl2 added to KCl
  • KCl added to NaF
  • Br2 added to KI
Chlorine can be manufactured from
  • Electrolysis of NaCl
  • Electrolysis of brine
  • Electrolysis of bleaching powder
  • All above
Nitric acid converts iodine to
  • Iodic acid
  • Hydro iodic acid
  • Iodine Nitrate
  • Iodine pentoxide
In preparation of chlorine from HCl, MnO2 acts as
  • Oxidising agent
  • Reducing agent
  • Catalytic agent
  • Dehydration agent
In KI solution I2 readily dissolves & forms
  • I–
  • KI2

  • Chemistry-Class 12 p Block Elements-2880.png
  • KI3
When Cl is passed over dry slaked lime at room temperature, main reaction product is,

  • Chemistry-Class 12 p Block Elements-2882.png
  • 2)
    Chemistry-Class 12 p Block Elements-2883.png

  • Chemistry-Class 12 p Block Elements-2884.png

  • Chemistry-Class 12 p Block Elements-2885.png

Chemistry-Class 12 p Block Elements-2887.png
  • Cl2
  • Conc. HCl
  • HBr
  • H2S
Which reaction can't be used for production of halogen acid.

  • Chemistry-Class 12 p Block Elements-2889.png
  • 2)
    Chemistry-Class 12 p Block Elements-2890.png

  • Chemistry-Class 12 p Block Elements-2891.png

  • Chemistry-Class 12 p Block Elements-2892.png
When cold NaOH reacts with Cl2 it forms
  • NaClO
  • NaClO2
  • NaClO3
  • None
Which one is anhydride of HClO4
  • Cl2O
  • ClO2
  • Cl2O6
  • Cl2O7
In dark, which of following reacts with Hydrogen?
  • Br2
  • F2
  • I2
  • Cl2
Electrolysis of a liquid resulted in formation of Hydrogen at cathode & Cl2 at anode. Liquid is
  • Pure water
  • H2SO4 Solution
  • NaCl Solution
  • CaCl2 Solution
Concentrated HNO3 reacts with I2 to give
  • HI
  • HOI
  • HOIO2
  • HOIO3
Manufacture of Bromine from sea water, the mother liquor containing bromides is treated with
  • CO2
  • Cl2
  • I2
  • SO2
Formula of some fluorides are given. Which of them will combine with fluorine?
  • IF5
  • NaF
  • CaF2
  • SF5
Which of following oxidizes H2O to oxygen.
  • Cl
  • F
  • Br
  • I
A solution of HCl in water is good conductor while gaseous Hydrogen chloride is not . This is because
  • Water is good conductor of electricity
  • HCl in water ionises
  • Gas can not conduct electricity but water can
  • None of these
Bleaching action of bleaching powder is due to liberation of
  • Chlorine
  • Molecular oxygen
  • Nascent oxygen
  • Calcium carbonate
What products are expected from disproportion reaction of hypochlorous acid.
  • HClO3 and Cl2O
  • HClO3 and HClO4
  • HCl and Cl2O
  • HCl and HClO3
Mixture of conc. HCl and HNO3 made in 3:1 ratio contains
  • ClO2
  • NOCl
  • NCl3
  • N2O4
I–|3| is used for treatment of
  • Thyroid disorders
  • Skin disorders
  • Brain tumours
  • Kidney stones
Least reactive halogen with hydrogen is
  • Cl
  • I
  • Br
  • F
Bleaching action of chlorine is due to
  • Oxidation
  • Reduction
  • Hydrolysis
  • Its acidic nature
Which among following non metals is liq at 25oC
  • Br
  • C
  • P
  • S
Element that librates oxygen gas from water is
  • P
  • Na
  • F
  • I
On exciting Cl2 molecule by UV Light , we get
  • Cl
  • Cl+
  • Cl–
  • All
Which of following sequence is correct with refrence to oxidation number of iodine

  • Chemistry-Class 12 p Block Elements-2909.png
  • 2)
    Chemistry-Class 12 p Block Elements-2910.png

  • Chemistry-Class 12 p Block Elements-2911.png

  • Chemistry-Class 12 p Block Elements-2912.png
What is obtained on reacting HgCl2 and Hg(CN)2
  • (CN)2
  • Addition compound HgCl2. Hg(CN) 2
  • Hg(CN) Cl
  • Hg [Hg(CN)2 Cl2]
Metal halide, insoluble in water is
  • AgI
  • KBr
  • CaCl2
  • AgF
Which of following oxides is expected exhibit paramagnetic behaviour
  • CO2
  • SO2
  • ClO2
  • SiO2
Iodine dissolver readily in
  • Water
  • Potassium iodide
  • CCl4
  • Alcohol
Cl2 reacts with CS2 in presence of I2 to form
  • CHCl3
  • CCl4
  • C2H5Cl
  • C2H6
Bleaching powder is
  • CaOCl2
  • CaO
  • CaO(Cl).
  • CaCl(OCl)
Bleaching powder is obtained by treating chlorine with
  • CaO
  • CaCO3
  • CaSO4
  • Ca(OH)2
Which is formed when F reacts with hot & conc. Sodium Hydroxide.
  • O2
  • O3
  • NaO
  • HF
Bromine water reacts with SO2 to form
  • H2O and HBr
  • H2SO4 and HBr
  • HBr and S
  • S and H2O

Chemistry-Class 12 p Block Elements-2926.png
  • O2
  • Cl2
  • CrOCl2
  • CrO2Cl2

Chemistry-Class 12 p Block Elements-2927.png

  • Chemistry-Class 12 p Block Elements-2928.png
  • 2)
    Chemistry-Class 12 p Block Elements-2929.png

  • Chemistry-Class 12 p Block Elements-2930.png

  • Chemistry-Class 12 p Block Elements-2931.png
Which of following chloride is water insoluble
  • HCl
  • AgCl
  • both 'a' & b
  • None
The alkali metal halide are soluble in water but LiF is insoluble because
  • It's Amphoteric
  • Li – F is highly ionic
  • It's Lattice energy is high
  • Li+ ion is least hydrated
Which of following is present as an active ingredient in bleaching powder for bleaching action
  • CaCl2
  • CaOCl2
  • Ca(OCl)2
  • CaO2Cl
ClO2 reacts with O3 to give
  • Cl2O4
  • Cl2O
  • Cl2O6
  • ClO4
Bad conductor of electricity is
  • H2F2
  • HCl
  • HBr
  • HI
When KBr is treated with concentrated H2SO4 redish brown gas evolved, gas is
  • Mixture of Br & HBr
  • Bromine and HNO3
  • Bromine
  • None of these
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