In the manufacture of sulphuric acid from elemental sulphur, the following sequence of major operations is followed :

The molecular mass of sulphuric acid is 98. If 49 g of the acid is dissolved in water to make one litre of solution, what will be the strength of the acid?

A

Two normal

B

One normal

C

0.5 normal

D

Four normal

Sulphur is melted in the sulphuric acid plant most commonly by employing

A

Electrical heater

B

Steam heater

C

Direct fuel oil fired heater

D

Gas fired furnace

Sulphuric acid completely saturated with sulphur trioxide is called

A

Concentrated sulphuric acid

B

Oleum

C

Sulphurous acid

D

Dilute sulphuric acid

Sulphur melting pit in the sulphuric acid plant is made of

A

Lead lined stainless steel

B

Cast iron

C

Steel or cement-brick lined

D

Hard wood

Contact process of sulphuric acid manufacture

A

Yields acid of higher concentration than chamber process

B

Yields acid of lower concentration than chamber process

C

Is obsolete

D

Eliminates absorber

Platinum catalyst used in the earlier days of sulphuric acid manufacture by contact process suffers from the drawback like

A

High cost

B

Fragile nature

C

Easy poisoning tendency

D

All of the above

নিম্নের কোন পরীক্ষাটি সালফিউরিক এসিড ও নাইট্রিক এসিডের মধ্যে পার্থক্য করতে ব্যবহার করা যায়? (Which one of the following tests can be used to distinguish between sulphuric acid and nitric acid?

A

সার্বজনীন নির্দেশক দিয়ে পরীক্ষা। (Test with universal indicator)

B

সোডিয়াম কার্বনেট গুড়া যোগে। (Addition of sodium carbonate powder)

C

ম্যাগনেশিয়াম ফিতা যোগে। (Addition of magnesium ribbon)

D

বেরিয়াম নাইট্রেট দ্রবণ যোগে। (Addition of barium nitrate solution )

নিম্নের কোন পরিক্ষাটি সালফিউরিক এসিড ও নাইট্রিক এসিডের মধ্যে পার্থক্য করতে ব্যবহার করা যায়? (Which one of the following tests can be used to distinguish between sulphuric acid and nitric acid?)

A

সার্বজনীন নির্দেশ দিয়ে পরীক্ষা। (Test with universal indicator)

B

সোডিয়াম কার্বনেত গুড়া যোগে (Addition of sodiumcarbonate powder)

C

ম্যাগনেসিয়াম ফিতা যোগে। (Addition of magnesium ribbon)

D

বেরিয়াম নাইট্রেট দ্রবণ যোগে। (Addition of barium nitrate solution)

Reaction of nitric acid and sulphuric acid with phosphate rock produces

A

Nitrophosphate

B

Diammonium phosphate

C

Tricresyl phosphate

D

Tributyl phosphate

Sulphuric acid is mixed with ground phosphate rock (to produce phosphoric acid) in a steel digestor lined with

A

Acidic refractory

B

Rubber

C

Karbate

D

Lead or acid-proof bricks

In the manufacture of sulphuric acid from elemental sulphur, the following sequence of major operations is followed :

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