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WorksheetsHydrogen
Total questions: 30
Worksheet time: 28mins
In context with the industrial preparation of hydrogen from water gas (CO+H2),which of the following
is the correct statement ?
CO is removed by absorption in aqueous Cu2Cl2 solution
H2 is removed through occlusion with Pd
CO is oxidized to CO2 with steam in the presence of a catalyst followed by absorption of CO2 in alkali
CO and H2 are fractionally separated using differences in their densities
Hydrogen resembles halogens in many respects for which several factors are responsible. Of the following factors which one is most important in this respect?
Its tendency to lose an electron to form a cation.
Its tendency to gain a single electron in its valence shell to attain stable electronic configuration.
Its low negative electron gain enthalpy value.
Its small size.
Most aboundant isotops of hydrogen is
Tritium
Dueterium
Protium
Para - Hydrogen
During electrolysis of water , hydrogen is collected at
anode
cathode
positive electrode
Both Electrodes
The property of hydrogen which distinguishes it from alkali
metals is
its electropositive character
its affinity for non metal
its reducing character
its non-metallic character
Which of the following is formed on reaction of carbon
monoxide gas with dihydrogen in presence of cobalt as
a catalyst?
Methanal
Methanol
Methane
Formic acid
CuO+ H2--------------------> Cu + H2O , here H2 is a
oxidising agent
reducing agent
none
Both a and b
Addition of hydrogen to vegetable oil to get vanaspati ghee in presence of catalyst
hydrogenation
catalytic hydrogenation
catalysis
Reduction
Commercially H is prepared by
Bosch process
Ostwald process
None
Haber Bosch
what does the hydrogen turn into at the anode
proton
H2+
H2-
H-
What is the element symbol for hydrogen
HY
H
He
Hn
Hydrogen is made up of one proton and one ________.
atom
neutron
electron
All of these
Over __________ of the atoms in the universe are hydrogen atoms.
50%
90%
75%
65%
Statement–1 : ZrH2 is a non-stoichiometric hydride.
Statement–2 :The composition of ZrH2 is exact same as its chemical formula.
Statement-1 is true, statement-2 is true and statement-2 is correct explanation for statement-1.
Statement-1 is true, statement-2 is true and statement-2 is NOT the correct explanation for statement-1.
Statement-1 is true, statement-2 is false.
Statement-1 is false, statement-2 is true
Metal hydrides are ionic, covalent or molecular in nature. Among LiH, NaH, KH, RbH, CsH, the correct order of increasing ionic character is
LiH > NaH > CsH > KH>RbH
LiH < NaH < KH < RbH < CsH
RbH > CsH > NaH > KH > LiH
NaH > CsH > RbH > LiH > KH
Which of the following hydrides is electron-precise hydride?
B2H6
NH3
H2O
CH4
Ionic Hydrides are also called
Molecular Hydrides
Non- stiochiometric Hydrides
Saline Hydrides
Metallic Hydrides
Covalent hydrides are formed with most of the
p -Block elements
s- Block elements
d Block elements
f-block elements
Boron hydrides are------- hydrides
Ionic
Covalent
Metallic
Non metallic
2M+H2--------->
2MH
2MH2
MH2
M2H2
Hydrogen can be obtained from water, by the action of water on-
Calcium carbide
Calcium hydride
Calcium oxide
Calcium chloride
Dihydrogen can be prepared on commercial scale by different methods. In its preparation by the action of steam on hydrocarbons, a mixture of CO and H gas is formed. It is known as________________
CO2 + H2
Syngas (Water Gas)
Producer gas
Industrial gas
Which hydride is an ionic hydride ?
H2S
TiH1.73
NH3
NaH
_________________________is connected to the positive terminal of the battery.
cathode
anode
none
Negative electrode
Which type of elements not form true hydrides.
Transition metal
Alkali and Alkaline metals
P- block elements
None
