Industrial Preparation: Contact process

Q.

Zn + HNO3 ------ Zn(NO3)2 + NO2 + H2O please balance this in method which you have thought . But not in trail method

Q. Write the differences between with examples:
(a) a strong electrolyte and a weak electrolyte.
(b) electrolytic dissociation and ionization.

Q. What is the meaning of catalyst? With examples

Q. The following flow diagram shows the main steps for the manufacture of sulphuric acid by the Contact Process.

(a) Name a substance other than sulphur that would react with dry air on heating to form sulphur dioxide.
(b) Write the equation for the reaction taking place in the catalytic converter.
(c) The sulphur trioxide is absorbed in $98\%$ sulphuric acid and not in water. Give a reason for this and write the equation taking place here.
(d) What is added to change oleum into sulphuric acid?
[5 MARKS]

Q.

Explain the reaction between dil.$\mathrm{HCl}$ and Sodium sulphite

Q.

A silvery-white metal X taken in the form of ribbon, when ignited, burns in air with a dazzling white flame to form a white powder Y, When water water is added to power Y, it dissolves partially to form another substance Z.

(a) What could metal X be ?

(b) What is power Y ?

(c) With which substance metal X combines to form powder Y ?

(d) What is substance Z ? Name one domestic use of substance Z.

(e) Write a balanced chemical equation of the reaction which takes place when metal X burns is air to form powder Y.

Q.

The catalyst used in making ${\mathrm{H}}_2{\mathrm{SO}}_4$ in contact process is

Q. Oleum is a mixture of sulphuric acid and .

1. sulphur trioxide
2. water
3. sulphurous acid

Q.

Which of the following process is used for the manufacture of sulphuric acid?

1. Contact process

2. Haber process

3. Ostwald process

4. Bosch process

Q.

Which of the following acid is a strong electrolyte?

1. Sulphuric acid

2. Carbonic acid

3. Oxalic acid

4. Acetic acid

Q. Write the equations of chlorination of ethane.

Q.

Differentiate between wet and dry deposition.

Q.

What is the name of the process for industrial preparation of sulphuric acid?

1. Haber’s process

2. Contact process

3. None of the above

4. Ostwald’s process

Q.

Oleum is a combination of:

1. Sulphurous acid and nitric acid

2. Sulphuric acid and sulphur dioxide

3. Sulphur trioxide and sulphuric acid

4. Nitric acid and hydrochloric acid

Q. What is the use of dry ether in Wurtz reaction and acetone in Finkelstein reaction?

Q.

What is the difference between sulphate and sulphide?

Q.

Which process is used for the industrial preparation of sulphuric acid?

1. Haber’s process

2. Contact process

3. Ostwald’s process

4. Bosch process

Q. On heating iron pyrite, gas is released, which is used in the production of sulphuric acid.

1. carbon dioxide
2. iron oxide
3. sulphur trioxide
4. sulphur dioxide

Q.

The preparation of water from hydrogen and oxygen gas is accompanied by:

1. Change in state

2. Formation of ashes

3. Evolution of coloured gas

4. Formation of precipitate

Q.

What happens when mercurous nitrate is treated with hydrochloric acid?

Q.

Concentrated sulphuric acid is a :

1. none of the above

2. Strong electrolyte

3. Non electrolyte

4. Weak electrolyte

Q. In choralkali process H+ and cl- ions doesn't combine and form HCl ?

Q.

Match List-1 with List-2:

Column 1	Column 2
Alcoholic potassium hydroxide	Electrode in batteries
$\mathrm{Pd}/{\mathrm{BaSO}}_4$	Obtained by addition reaction
BHC(benzene hexachloride)	Used for $\mathrm{\beta }$-elimination reaction
Polyacetylene	Lindlars catalyst

Q.

Oleum is a combination of sulphur trioxide and ___ .

Q. Give equations for the following conversions:
(i) Sodium to sodium hydroxide using water.
(ii) Steam to hydrogen using burning magnesium.
(iii) Dilute sulphuric acid to hydrogen using zinc.
(iv) Mercuric oxide to mercury.
(v) Silver oxide to silver.
(vi) Copper hydroxide to copper oxide.
(vii) Calcium hydroxide to calcium oxide.
(viii) Lead carbonate to lead.
(ix) Potassium nitrate to oxygen.
(x) Copper nitrate to nitrogen dioxide.
(xi) Mercuric nitrate to mercury.
(xii) Silver nitrate to silver.

Q.

A. Give the balanced reaction for the heating of calcium carbonate.

B. Write the name of the type of the above reaction.

Q. Which of the following options is incorrect for electrolysis of brine solution?

1. Sodium hydroxide can be produced by this process.
2. Gas given out at cathode burns with a pop sound.
3. Gas given out at anode is used for making bleaching powder.
4. Gas given out at cathode is used for making bleaching powder.

Q. What is meant by the following terms:
(a) Aqua fortis
(b) Aqua regia
(c) Fuming nitric acid
(d) Decrepitation

Q. (a) To carry out the so-called "electrolysis of water", sulphuric acid is added to water.
How does the addition of sulphuric acid produce a conducting solution?
(b) Copy and complete the following sentence:
With platinum electrodes, hydrogen is liberated at the ________ and oxygen at the ________ during the electrolysis of acidified water.

Q. nta first order reaction is 50% completed in 20 minutes at 27 degree celcius and in 10 minutes at 47 degree celcius.what is the energy of activation of the reaction?n