Paper 1 February/March 2022 CHEMISTRY (9701/12) IGCSE
Cambridge
AS & A Level
Chemistry (9701)
خرداد
2022
شامل مباحث:
تعداد سوالات: 40
سطح دشواری:
متوسط
شروع:
آزاد
پایان:
آزاد
مدت پاسخگویی:
75 دقیقه
پیش نمایش صفحه اول فایل
W is a solid that reacts with water to produce an alkaline solution.
The addition of two drops of dilute H$_2$SO$_4$ to this alkaline solution produces a white precipitate.
What could be the identity of solid W?