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JEE Questions for Chemistry Hydrogen Quiz 6 - MCQExams.com
JEE
Chemistry
Hydrogen
Quiz 6
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 :
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Mg(OH)2 & NH3
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Be(OH)2 & NH3
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LiOH & NH3
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Ca(OH)2 & NH3
Fishes survive in frozen lakes because
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Ice floats on water
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Ice acts as an insulator
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The Solubility of CO2 in water increaze
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1 & 2
Ice is lighter than water because
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Density of ice is greater than water
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The volume of ice is more for given mass of water due to H - bonding
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Anomalous expansion
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Oxygen is electronegative & size is large
The hydrogen which are used in catalytic reaction are :
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hydrides of p-block
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hydrides of d-block
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interstial hydrides
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2 & 3
Alkali metal do not form interstial hydrides because
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alkali metals loose electron readily
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The packing in alkali metals in way close
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Absence of interstitial voids
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size is large
The position of the element which forms deficient hydrides.
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Period 2 group 14
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Period 2 group 15
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Period 2 group 13
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Period 6 group 13
It is not advisable to use hard water for washing clothes because
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Precipitate of sodium salt of fatty acid is formed
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Precipitate of sodium salt of sulphonic acid is formed
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Precipitate of Magnesium salt of sulphonic acid is formed
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Precipitate of Magnesium salt of fatty acid is formed
Clark’s method is used to remove
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Temporary hardenes
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permanent
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Hardnes due to soluble SO4-2 of Ca+2, MG+2
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Temporary & permanent
Na + D
2
O → A+B, A & B are _____ & _____ respectively.
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NaOH & H2O
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NaOD & D2
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NaOD & D2O
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Na2D & D2
1. H
2
O
2
acts as bleaching agent because of if its oxidising property 2. It is dangerous to used H
2
O
2
is maintenance of environment 3. H
2
O
2
is used is preperation of good quality detergents 4. Perhydral is used as a disuifectant
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TFTT
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FTTT
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TTFF
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FFTF
1. A paper with stain of black Pbs, dipped in H
2
O
2
solution turns white 2. The colour of acidified KMnO
4
does not disappear when H
2
O
2
is added 3. A basic solution containing Fe
3+
ion turn blue on addition of H
2
O
2
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FFF
0%
FTF
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TFF
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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 H
2
O
2
are in the same plane 4. Na
2
CO
3
removes temporary & permannent hardenes
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TFTT
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FFFT
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TFFT
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TTTF
Statement S: The position of hydrogen is not fixed, Statement R: Hydrogen resemker alkali metals because of its stable +1 oxidation state.
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S & R both are correct
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S is corrct R is correct and explains S.
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S is incorrect R is correct
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S is correct R is incorrect
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(a)
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(b)
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(c)
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(d)
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(a)
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(b)
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(c)
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(d)
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(a)
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(b)
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(c)
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(d)
2.72 g of H
2
O
2
is present in 50 ml solution Calculate M, N, Strength gL
-1
Volume strength H
2
O
2
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M = 10, N = 2.9, g/l = 53.0, Vol = 17.0
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M = 1.6, N = 3.2, g/l = 54.4, Vol = 17.92
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M = 0.89, N = 1.8, g/l = 52.9, Vol = 18.1
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M = 0.90, N = 1.0, g/l = 5.44, Vol = 16.0
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(a)
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(b)
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(c)
0%
(d)
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(a)
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(b)
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(c)
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(d)
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Ba, BaO, BaO2 , BaSO4 , H2O2
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Na, Na2O, Na2O2 , Na2SO4 , H2O
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Ba, Ba2O2 , BaO2 , BaSO4 , H2O2
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Ca, CaO, CaO2 , CaSO4 , H2O2
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