Heating of ortho-phosphoric acid to 250°C produces___________________?
Correct answer: B. Pyrophosphoric acid
- A. Meta-phosphoric acid
- B. Pyrophosphoric acid
- C. No change in it
- D. None of these
Explanation
On heating, two molecules of orthophosphoric acid condense with loss of water to form pyrophosphoric acid, H4P2O7. Metaphosphoric acid forms at more severe dehydration conditions.
Report an error
The more specific you are, the faster it gets fixed. A source beats an opinion.
Prefer email? support@testustad.com
Practise Chemical Process Principles
2,710 free Chemical Process Principles MCQs from Chemical Engineering, each with the correct answer and an explanation. Unlimited attempts, no account needed.
Exams that ask Chemical Engineering questions like this
Chemical Engineering is on this paper prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for it.
More Chemical Process Principles questions
Chemical formula of biuret is_________________?
Ammonia synthesis gas is produced from natural gas by___________________?
Superphosphate is manufactured by reacting phosphate rock with_____________________?
Potassic fertilisers do not promote the development of ______________________?
Base suspension fertiliser essentially contains___________________?
Fertiliser value of a nitrogenous fertiliser is expressed in terms of its ______________ content?