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1
KCET 2019
MCQ (Single Correct Answer)
+1
-0

Which of the following is not true regarding the usage of hydrogen as a fuel?

A
High calorific value
B
The combustible energy of hydrogen can be directly converted to electrical energy in a fuel cell
C
Combusion product is ecofriendly
D
Hydrogen gas can be easily liquefied and stored
2
KCET 2018
MCQ (Single Correct Answer)
+1
-0
$\mathrm{H}_2 \mathrm{O}_2$ is
A
an oxidising agent
B
a reducing agent
C
both oxidising and reducing agent
D
neither oxidising nor reducing agent
3
KCET 2018
MCQ (Single Correct Answer)
+1
-0
Which of the following ions will cause hardness in water?
A
$\mathrm{Ca}^{2+}$
B
$\mathrm{Na}^{+}$
C
$\mathrm{Cl}^{-}$
D
$\mathrm{K}^{+}$
4
KCET 2017
MCQ (Single Correct Answer)
+1
-0
In the manufacture of hydrogen from water gas $\left(\mathrm{CO}+\mathrm{H}_2\right)$, which of the following is correct statement?
A
CO and $\mathrm{H}_2$ are separated based on difference in their densities.
B
$\mathrm{H}_2$ is removed by occlusion with Pd .
C
CO is oxidised to $\mathrm{CO}_2$ with steam in the presence of a catalyst followed by absorption of $\mathrm{CO}_2$ in alkali
D
Hydrogen is isolated by diffusion.
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