Which is the main reducing agent during production of iron from iron ore in a blast furnace ?

Question: In contact process, SO3 is absorbed in 97% H2SO4 and not in water, because
[A].

SO3 gas is sparingly soluble in water.

[B].

water forms an acid mist, which is difficult to absorb.

[C].

the purity of acid is affected.

[D].

scale formation in the absorber is to be avoided.

Answer: Option B

Explanation:

No answer description available for this question.

Question: ‘Synthesis gas’ meant for the synthesis of organic compound is a variable mixture of
[A].

N2 & H2

[B].

CO2 & H2

[C].

CO & H2

[D].

C & H2

Answer: Option C

Explanation:

No answer description available for this question.

Question: Permanent hardness of water is due to the presence of calcium & magnesium
[A].

bi-carbonates

[B].

sulphates & chlorides

[C].

carbonate

[D].

none of these

Answer: Option B

Explanation:

No answer description available for this question.