Paper 1, Oct Nov 2007 | Cambridge AS - A Level Biology (9700) Past Papers
CIE
AS & A Level
Biology (9700)
بهمن
2007
مشاهده نمونه سوال
شامل مباحث:
AS Level
تعداد سوالات: 40
سطح دشواری:
متوسط
شروع:
آزاد
پایان:
آزاد
مدت پاسخگویی:
60 دقیقه
پیش نمایش صفحه اول فایل
Neda Bani The colour of a positive Benedict’s test is due to the formation of copper oxide. The mass of copper oxide is proportional to the mass of reducing sugar present.
Samples of fruit juice were tested for the presence of reducing sugars and non-reducing sugars using the Benedict’s test. The results show the mass of copper oxide after boiling with Benedict’s solution and after acid hydrolysis and boiling with Benedict’s solution.
