Preparation of Hydrogen
What happens when dilute hydrochloric acid is added to iron fillings? Tick the correct answer.
Hydrogen gas and Iron chloride are produced
Chlorine gas and Iron hydroxide are produced
No reaction takes place
Iron salt and water are produced
When magnesium and hydrochloric acid react, they produce
Oxygen and magnesium chloride
Chlorine and magnesium oxide
Hydrogen and magnesium chloride
hydrogen and magnesium oxide
Color of magnesium oxide is:
Explain combination and decomposition reactions with suitable examples?
Dihydrogen of high purity is obtained through
The electrolysis of acidified water using electrodes.
The reaction of with dilute .
The electrolysis of brine solution.
The electrolysis of warm .
Take about 2 g of lead nitrate in a boiling tube and heat it, what do you observe?
(A) Used as a moderator in a nuclear reactor
(B) Obtained as a by-product in the fertilizer industry
(C) Used for the study of the reaction mechanism
(D) Has a higher dielectric constant than water
Choose the correct answer from the option given below:
- (B) only
- (B) and (D) only
- (C) only
- (D) only
Cracking of naphtha and fuel cell
Reaction of coal or CO with steam
Electrolysis of warm, aqueous solution of Ba(OH)2 between nickel electrodes
Adding zinc granules to all acids
How can the production of dihydrogen, obtained from 'coal gastification', be increased?
Is sodium Acidic or alkaline?
An example of a complex salt is
sodium hydrogen sulphate
iron (II) ammonium sulphate
tetraamine copper (II) sulphate
Match List-I with List-II
a. Sodium Carbonate
d. Sodium hydroxide
During electrolysis, the reaction that takes place at cathode is:
Which catalyst is used in Bosch process?
When hydrogen burns in oxygen, water is formed; when electricity is passed through water, hydrogen and oxygen are given out. Name the type of chemical change involved in the two cases.
- Merck's process
- Permutit's process
- Lane's process
- Bosch's process
Q. Will copper with concentrated HCL produce hydrogen gas ?
A) ∆U < 0, w= 0
B) ∆U = 0 , w < 0
C) ∆U > 0 , w=0
D) ∆U < 0, w > 0
what should be the answer of this question according to you and why please explain in detail.
Sodium metal reacts with hot water to form sodium hydroxide and hydrogen gas.
Which gas is used in the Bosch process?
why is lead not affected by dilute hcl in cold???
In Haber's process of preparation on NH3, iron and molybdenum are added. They role of each is
Fe is catalyst and Mo is promoter
Mo is catalyst and Fe is promoter
Methane reacts with chlorine in the presence of sunlight and gives ___________.
Methyl chloride and hydrogen chloride
- Electrolysis of acidified water using platinum electrodes
- Electrolyzing warm aq. Ba(OH)2 using nickel anode and iron cathode
- Electrolysis of brine solution
- Reaction of steam on hydrocarbons or coke at high temperature in the presence of catalyst
What happens when white phosphorus is heated with concentrated solution in an inert atmosphere of ?
Metals generally react with dilute acids to produce Hydrogen gas. Which one of the following metals does not react with dilute Hydrochloric acid?
- Calcium oxide
- Anhydrous calcium chloride
- Phosphorus pentaoxide
- Conc. sulphuric acid