JEE Questions for Chemistry Hydrogen Quiz 6 - MCQExams.com

A metal M belongs to period 3 & group 2 reacts with nitrogen to give compound B. If B is added to water the products are :
  • Mg(OH)2 & NH3
  • Be(OH)2 & NH3
  • LiOH & NH3
  • Ca(OH)2 & NH3
Fishes survive in frozen lakes because
  • Ice floats on water
  • Ice acts as an insulator
  • The Solubility of CO2 in water increaze
  • 1 & 2
Ice is lighter than water because
  • Density of ice is greater than water
  • The volume of ice is more for given mass of water due to H - bonding
  • Anomalous expansion
  • Oxygen is electronegative & size is large
The hydrogen which are used in catalytic reaction are :
  • hydrides of p-block
  • hydrides of d-block
  • interstial hydrides
  • 2 & 3
Alkali metal do not form interstial hydrides because
  • alkali metals loose electron readily
  • The packing in alkali metals in way close
  • Absence of interstitial voids
  • size is large
The position of the element which forms deficient hydrides.
  • Period 2 group 14
  • Period 2 group 15
  • Period 2 group 13
  • Period 6 group 13
It is not advisable to use hard water for washing clothes because
  • Precipitate of sodium salt of fatty acid is formed
  • Precipitate of sodium salt of sulphonic acid is formed
  • Precipitate of Magnesium salt of sulphonic acid is formed
  • Precipitate of Magnesium salt of fatty acid is formed
Clark’s method is used to remove
  • Temporary hardenes
  • permanent
  • Hardnes due to soluble SO4-2 of Ca+2, MG+2
  • Temporary & permanent
Na + D2O → A+B, A & B are _____ & _____ respectively.
  • NaOH & H2O
  • NaOD & D2
  • NaOD & D2O
  • Na2D & D2
1. H2O2 acts as bleaching agent because of if its oxidising property
2. It is dangerous to used H2O2 is maintenance of environment
3. H2O2 is used is preperation of good quality detergents
4. Perhydral is used as a disuifectant
  • TFTT
  • FTTT
  • TTFF
  • FFTF
1. A paper with stain of black Pbs, dipped in H2O2 solution turns white
2. The colour of acidified KMnO4 does not disappear when H2O2 is added
3. A basic solution containing Fe3+ ion turn blue on addition of H2O2
  • FFF
  • FTF
  • TFF
  • TTT
1. Tritium can be obtained from natural source.
2. In ionic hydrides the oxidation state of hydrogen is +1
3. The four atom of oxygen in H2O2 are in the same plane
4. Na2CO3 removes temporary & permannent hardenes
  • TFTT
  • FFFT
  • TFFT
  • TTTF
Statement S: The position of hydrogen is not fixed,
Statement R: Hydrogen resemker alkali metals because of its stable +1 oxidation state.
  • S & R both are correct
  • S is corrct R is correct and explains S.
  • S is incorrect R is correct
  • S is correct R is incorrect

Chemistry-Hydrogen-5133.png
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Chemistry-Hydrogen-5137.png
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2.72 g of H2O2 is present in 50 ml solution Calculate M, N, Strength gL-1 Volume strength H2O2
  • M = 10, N = 2.9, g/l = 53.0, Vol = 17.0
  • M = 1.6, N = 3.2, g/l = 54.4, Vol = 17.92
  • M = 0.89, N = 1.8, g/l = 52.9, Vol = 18.1
  • M = 0.90, N = 1.0, g/l = 5.44, Vol = 16.0

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Chemistry-Hydrogen-5144.png
  • Ba, BaO, BaO2 , BaSO4 , H2O2
  • Na, Na2O, Na2O2 , Na2SO4 , H2O
  • Ba, Ba2O2 , BaO2 , BaSO4 , H2O2
  • Ca, CaO, CaO2 , CaSO4 , H2O2
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