Preparation of Hydrogen

Q. Syngas contains

1. only CO
2. All the above
3. both CO and
4. only

Q. Very pure hydrogen is obtained by

1. Cracking of naphtha and fuel cell

2. Reaction of coal or CO with steam

3. Electrolysis of warm, aqueous solution of Ba(OH)₂ between nickel electrodes

4. Adding zinc granules to all acids

Q.

Hydrogen can be obtained from water by

1. Reaction with metal oxides

2. Reaction with non-metal oxides

3. Reaction with metals

4. Reaction with metal hydrides

Q. Ortho-hydrogen and para-hydrogen are similar in terms of which of the following properties?

1. Thermal conductivity
2. Chemical properties
3. Vapour pressure
4. Heat capacity

Q.

Hydrogen is evolved by the action of cold dil. $HN{O}_3$ on

1. Al

2. Mn

3. Cu

4. Fe

Q.

Among the following which is the condition favourable for the formation of $C{H}_{3}OH$ from $CO$ and $H_2$ ?

1. 'Ni' catalyst, T = 725 - 775 K, P = 200atm

2. Finely divided 'Fe' catalyst, 'Mo' promoter temperature = 300⁰C, Pressure = 200atm

3. 'ZnO' catalyst, Cr₂O₃ - promoter, T = 300⁰C, P = 200atm

4. 'Co' catalyst, T = 200⁰C

Q.

What is the catalyst 'y' used in the water gas shift reaction?

Reaction 1: $C\left(redhotcoke\right)+H_{2}O\left(g\right)\stackrel{1273K}{⟶}CO\left(g\right)+H_2\left(g\right)$

Reaction 2: $CO\left(g\right)+H_2\left(g\right)+H_{2}O\left(g\right)\stackrel{y\left(catalyst\right)}{⟶}C{O}_2\left(g\right)+2H_2\left(g\right)$

1. $F{e}_2{O}_3/C{r}_2{O}_3$

2. $V_2{O}_5$

3. Raney Nickel

4. Ziegler Natta Catalyst

Q.

Highly pure Hydrogen (~99.9% ) can be obtained from:

1. Electrolysis of water

2. All of the above

3. Electrolysis of heavy water

4. Reacting Zn with Dil H₂SO₄

Q.

Which of the following will not produce hydrogen gas?

1. Reaction of Zn with concentrated $H_{2}S{O}_4$

2. Electrolysis of mildly acidified water

3. Electrolysis of NaCl in Nelson's cell

4. Reaction of Zn with NaOH

Q. The mixture of $CO$ and $H_2$ is called:

1. Water gas
2. Producer gas
3. Coal gas
4. All of these