Question 12 : Which of these elements shows polymorphism?
Question 14 : Clays are esscentially alumina-silicates of -----
Na and K
Al or SiQuestion 18 : Which of these elements of group IV can form compounds easily in +2 oxidation state
Question 19 : Which of these is not a component of lead-acid battery?
Na or Ca
Ca and Si
Dear murahi, your question requires a lot of work, which neither of our experts is ready to perform for free. We advise you to convert it to a fully qualified order and we will try to help you. Please click the link below to proceed: Submit order