Hydrogen - Topic Wise Multiple Choice Questions (MCQ)
Cracktest Topic Wise free Hydrogen MCQ for 11th 12th exam Practice Multiple Choice Questions and answer for JEE-mains State CET Engineering Entrance GATE free Online Test
1 )
H2O2 is not used as
Oxidizing agent
Reducing agent
Catalyst ✔
Bleaching
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2 )
The conversion of atomic hydrogen to dihydrogen is :
endothermic change
Photochemical change
exothermic change ✔
Nuclear change
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3 )
Hydrogen gas can be produced from
Water gas ✔
producer gas
coal gas
air
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4 )
Statement S: The position of hydrogen is not fixed,
Statement R: Hydrogen resembles alkali metals because of its stable +1 oxidation state.
S & R both are correct ✔
S is correct R is correct and explains S
S is incorrect R is correct
S is correct R is incorrect
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5 )
When Zn pieces are dropped in NaOH solution H2(g) is obtained and soluble ...... is obtained
Na2ZnO3
Na4ZnO3
NaZnO2 ✔
Na3ZnO2
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