Chemistry
Choose the most appropriate answer from
[SO2, SiO2, Al2O3, CO, MgO, Na2O]
(a) A covalent oxide of a metalloid
(b) An oxide which when dissolved in water form acid.
(c) A basic oxide
(d) An amphoteric oxide
Related Questions
State the terms defined by the following sentences:
(a) A soluble base
(b) The insoluble solid formed when two solution are mixed together.
(c) An acidic solution in which there is only partial ionization of the solute molecules.
Which of the following methods A, B, C, D or E is generally used for preparing the chlorides listed below from (i) to (v). Answer by writing down the chloride and the letter pertaining to the corresponding method. Each letter is to be used only once.
A Action of an acid on a metal B Action of an acid on an oxide or carbonate C Direct combination D Neutralization of an alkali by an acid E Precipitation (double decomposition) (i) Copper (II) chloride (ii) Iron (II) chloride (iii) Iron (III) chloride (iv) Lead (II) chloride (v) Sodium chloride What do you understand by the water of crystallisation?
Give four substances which contain water of crystallisation and write their common names.
(a) Define efflorescence. Give examples.
(b) Define deliquescence. Give examples.