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1
AIEEE 2012
MCQ (Single Correct Answer)
+4
-1
Out of Syllabus
Very pure hydrogen (99.9%) can be made by which of the following processes?
A
Reaction of methane with steam
B
Mixing natural hydrocarbons of high molecular weight
C
Electrolysis of water
D
Reaction of salt like hydrides with water
2
AIEEE 2008
MCQ (Single Correct Answer)
+4
-1
Out of Syllabus
In context with the industrial preparation of hydrogen from water gas (CO + H2), which of the following is the correct statement?
A
CO and H2 are fractionally separated using differences in their densities
B
CO is removed by absorption in aqueous Cu2Cl2 solution
C
H2 is removed through occlusion with Pd
D
CO is oxidised to CO2 with steam in the presence of a catalyst followed by absorption of CO2 in alkali
3
AIEEE 2005
MCQ (Single Correct Answer)
+4
-1
Out of Syllabus
Which of the following statements in relation to the hydrogen atom is correct?
A
3s orbital is lower in energy than 3p orbital
B
3p orbital is lower in energy than 3d orbital
C
3s and 3p orbitals are of lower energy than 3d orbital
D
3s, 3p and 3d orbitals all have the same energy
4
AIEEE 2003
MCQ (Single Correct Answer)
+4
-1
Out of Syllabus
Which one of the following process will produce hard water?
A
Saturation of water with MgCO3
B
Saturation of water with CaSO4
C
Addition of Na2SO4 to water
D
Saturation of water with CaCO3
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