Which of the following may be viewed as a catalyst in the manufacture of soda ash by Solvay process?

Which of the following are the applications of common salt? (i) It is used as preservative. (ii) It is used for manufacture of Na metal and Cl2(g) by electrolysis in molten state. (iii) It is used for manufacture of caustic soda. (iv) It is used for manufacturing baking soda and washing soda by Solvay process.

A

(i), (ii) and (iii)

B

(i), (ii) and (iv)

C

(ii), (iii) and (iv)

D

All of the above

Which of the following two statements is correct? a. The soda commonly used in the kitchen for making tasty crispy pokodas is baking soda. The baking soda is a sodium carbonate. b. Washing soda is usually used as a cleaning agent for domestic purposes and in glass, soap, paper industries. The washing soda is sodium hydrogen carbonate.

A

Only a

B

Only b

C

Both a and b

D

Neither a nor b

Which of the following is not required in the manufacture of soda ash by Solvay process?

A

Ammonia

B

Limestone

C

Nitric acid

D

None of these

What will be the final concentration of soda in a mixture of water and soda when 30 litres of soda in added to the mixture? Statement I: Initial quantity and concentration of soda in the mixture were 20 L and 40% Statement II: Initially, water and soda in the mixture were in the ratio 3 : 2.

A

Statements I and II together are required to answer the question.

B

Statement I alone is sufficient to answer the question.

C

Either statement I or statement II alone is sufficient to answer the question.

D

Both Statements I and II together are not sufficient to answer the question.

E

Statement II alone is sufficient to answer the question.

Raw materials for 'Solvay Process' for manufacture of the soda ash are

A

Salt, limestone and coke or gas

B

Ammonia, salt and limestone

C

Ammonia limestone and coke

D

None of these

The carbonating tower used in Solvay process of soda ash manufacture is made of

A

Cast iron

B

Stainless steel

C

Karbate

D

Lead lined steel

Solvay process as compared to dual process (i.e. modified Solvay process)

A

Can use low grade brine

B

Has less corrosion problems

C

Involves higher investment in NH₃ recovery units than that for crystallisation units for NH₄Cl

D

Both B and C

With reference to 'fly ash' produced by the power plants using coal as fuel, which of the following statements is/are correct? 1. Fly ash can be used in the production of bricks for building construction. 2. Fly ash can be used as a replacement for some of the Portland cement contents of concrete. 3. Fly ash is made up of silicon dioxide and calcium oxide only, and does not contain any toxic elements. Select the correct answer using the code given below

A

1 and 2

B

2 only

C

1 and 3

D

3 only

Commercial production of soda ash by Solvay process requires limestone, __________ as raw materials.

A

Coke and sand

B

Brine and coal

C

Coke and caustic soda

D

None of these

In the production of soda ash by Solvay process, the by-product is

A

CaCl₂

B

NH₄Cl

C

NH₃

D

NaOH

Which of the following may be viewed as a catalyst in the manufacture of soda ash by Solvay process?

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