My next exam is on algebra

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I'd say 'My next exam is algebra.'

Rover

Thanks, Rover.

But do you think that the use of "on" is wrong? Perhaps, it's not wrong but just doesn't sound natural. Kindly let me know.

It's unnatural to me.

Similarly, I would say 'My next exam is maths'. 'My next exam is French'. 'My next exam is biology'.

Rover

Thank you.

But is it grammatically wrong? I understand that it's not a good way to use google search to check usage frequency of some phrase but it still provides you a general idea. It gives quite a number of hits if you use the search phrase "exam on physics"; you can replace the 'physics' with some other subject.

Do you find the use of "on" in the following sentence unnatural

I'm not sure whether using "on" is technically right or wrong, but it's certainly not the best way of stating this information. Here's a couple alternatives, depending upon the context of the sentence:

My next exam is about physics.
My next exam is in my physics class.
My next exam is on the topic of physics.

I'm not sure which of these would be the

My next exam is at Algebra.

ramesh sharma My next exam is at Algebra.

That only works if you have to go to a town called Algebra to take the exam.

Rover

I laughed at that reply above.

What about this sentence- My next exam will be Algebra.

Fine – but you don't need to capitalise algebra.