Preparation of Hydrogen
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Q. You are provided with three test tubes containing sugar solution, baking soda solution and tamarind solution. Explain how can you identify the nature of each of these solutions using litmus paper.
Q.
Among the following, which is the condition favourable for the formation of CH3OH from CO and H2 ?
Finely divided 'Fe' catalyst, 'Mo' promoter temperature = 3000C, Pressure = 200atm
'ZnO' catalyst, Cr2O3 - promoter, T = 3000C, P = 200atm
'Ni' catalyst, T = 725 - 775 K, P = 200atm
'Co' catalyst, T = 2000C
Q. What happens when sodium reacts with water?
Q. What happens when sodium reacts with water?
Q. Statement I: An ideal fuel should be easy to handle and transport.
Statement II: An ideal fuel should have low calorific value.
Statement II: An ideal fuel should have low calorific value.
- Only statement I is true
- Only statement II is true
- Both statements are true
- Both statements are false
Q. Choose the correct option Hydrogen is evolved by the action of cold dil. HNO3 on
Q. Statement I: An ideal fuel should be easy to handle and transport.
Statement II: An ideal fuel should have low calorific value.
Statement II: An ideal fuel should have low calorific value.
- Only statement I is true
- Only statement II is true
- Both statements are true
- Both statements are false
Q. Which of the following mixtures is referred to as water gas?
- SO4+H2
- CH4+N2
- CO+H2
- NO2+CO2
Q. Match the terms in Column - I with the relevant item in Column - II
Column−I Column−II(a)Electrolysis of water produces(p)Atomic reactor(b)Lithium aluminium hydride is used as(q)Polar molecule(c)Hydrogen chloride is a(r)Combines on metal surface to generate high temperature(d)Heavy water is used in(s)Reducing agent(e)Atomic hydrogen(t)Hydrogen and oxygen
Column−I Column−II(a)Electrolysis of water produces(p)Atomic reactor(b)Lithium aluminium hydride is used as(q)Polar molecule(c)Hydrogen chloride is a(r)Combines on metal surface to generate high temperature(d)Heavy water is used in(s)Reducing agent(e)Atomic hydrogen(t)Hydrogen and oxygen
- (a) → (r, s); (b) → (s); (c) → (q); (d) → (p); (e) → (s, t)
- (a) → (q); (b) → (s); (c) → (s, t); (d) → (p); (e) → (r, s)
- (a) → (s, t); (b) → (s); (c) → (q); (d) → (p); (e) → (r, s)
- (a) → (s, t); (b) → (p); (c) → (q); (d) → (s); (e) → (r, s)
Q. The metal which does not react with water or steam________
- Na
- Au
- Zn
- Fe
Q. Water vapour is collected at the anode during electrolysis of water.
- False
- True
Q. How will you prepare oxygen at the ordinary temperature in laboratory. Give a balanced equation for the reaction.
Q. Coal gas is a mixture of
- CH4(Methane)+H2+CO
- C4H10(Butane)+H2+CO
- C4H10(Butane)+H2O
- C2H6(Ethane)+H2+O2
Q. Zinc reacts with to produce potassium zincate and hydrogen gas.
- potassium oxide
- potassium hydroxide
- potassium chloride