Steps 1–4 are used to test for a non-reducing sugar.
1 Put $5c{m^3}$ of solution into a test-tube.
2 Add a few drops of acid.
3 Neutralise with alkali.
4 Add $6c{m^3}$ Benedict’s solution.
When is the solution boiled?
1 )
between steps 1 and 2
between steps 2 and 3 and after step 4
3 )
between steps 2 and 3 only
4 )
after step 4 only
تحلیل ویدئویی تست
تحلیل ویدئویی برای این تست ثبت نشده است!