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Hydrogen
Quiz 1
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Q.1
Amongst H2O,H2S,H2Se and H2Te, the one with the highest boiling point is -
H2O, because of hydrogen bonding
H2Te, because of higher molecular weight
H2S, because of hydrogen bonding
H2Se, because of lower molecular weight
Q.2
Zeolite used to soften hardness of water is, hydrated
Zinc aluminium borate
Sodium aluminium silicate
Calcium aluminium silicate
Lithium aluminium hydride
Q.3
Granulated zinc is preferred over other metals because it
contains copper which acts a catalyst
contains iron
none
None of these
Q.4
Hydrogen was first prepared by
Robert
Robert Boyle
Dalton
None of these
Q.5
_____________________names / coined the term Hydrogen.
Robert Boyle
Dalton
Lavoisier
None of these
Q.6
_______________________electrodes are used during electrolysis of water.
Graphite
platinum
Mercury
Both A & B
Q.7
Nitric acid and hydrochloric acid are
weak electrolyte
strong electrolyte
none
Both A & B
Q.8
Current enters the electrolyte through the
cathode
anode
none
Q.9
During electrolysis anion migrate towards
cathode
anode
none
Both A & B
Q.10
Nitric acid , sodium hydroxide are __________________electrolyte.
weak
strong
none
Both A & B
Q.11
_________________________is connected to the positive terminal of the battery.
cathode
anode
none
Both A & B
Q.12
Current leaves the electrolyte through the ________________.
Cathode
anode
none
Both A & B
Q.13
Contains impurity copper which acts as a catalyst.
Granulated zinc
Sodium
Aluminium
All of above
Q.14
Nitric acid is an _________________________agent.
reducing
oxidising
both
None of these
Q.15
______________________is formed when metal reacts with water.
hydroxide
metal hydroxide
hydride
All of above
Q.16
Can't react with dilute acids to liberate hydrogen
Copper
Mercury
copper, mercury and silver
Q.17
Hydrogen is colorless and
combustible
non combustible
supports combustion
Both A & B
Q.18
Detonating mixture
hydrogen --oxygen mixture
an explosive
hydrogen --oxygen mixture and is explosive in nature
None of these
Q.19
Impure Hydrogen burns with
pop sound
blue flame
pop sound as it contains impurities.
All of above
Q.20
Commercially H is prepared by
Bosch process
Ostwald process
both
0 h : 0 m : 1 s
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