Related Questions

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
Pharmacists recently conducted a study with respect to the reasons their customers purchased eye drops to soothe eye dryness. Dry eyes were more frequently experienced by customers who wore contact lenses than by custorners who did not wear contact lenses. The pharmacists concluded that wearing contact lenses, by itself, can cause contact wearers to have dry eyes.
A An inherited condition can cause both weak eyesight and dry eyes
B Physical exertion causes dry eyes in many people who wear contact lenses.
C Most people who have dry eyes do not wear contact lenses.
D Most people who wear contact lenses do not have dry eyes.
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
In the manufacture of sulphuric acid from elemental sulphur, the following sequence of major operations is followed :
A Furnace → converter → absorber
B Furnace → evaporator → absorber
C Furnace → converter → evaporator
D Converter → furnace → absorber
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 )
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
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)
Double Contact Double Absorption (DCDA) process is the most recent process for the manufacture of
A Nitric acid
B Sulphuric acid
C Ammonium sulphate
D Hydrochloric acid
Fertiliser plant making ammonium sulphate employing gypsum-ammonia reaction (usual practice is to use ammonia and sulphuric acid) is located at
A Rourkela (under SAIL)
B Bokaro (under SAIL)
C Sindri (under FCI)
D Baroda (under G.S.F.C.)

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