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प्रश्न
From the list given below, which one is:
[SO2, SiO2, Al2O3, CO, MgO, Na2O]
- A covalent oxide of a metalloid.
- An oxide which when dissolved in water form acid.
- A basic oxide.
- An amphoteric oxide.
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उत्तर
- SiO2
- SO2
- Na2O
- Al2O3
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संबंधित प्रश्न
Distinguish between the given pair of compounds using the test given within bracket:
A lead salt and a zinc salt (using excess ammonium hydroxide)
How is the following salt prepared:
Copper (II) sulphate from copper (II) oxide?
Choose the method of preparation of the following salts, from the methods given in the list:
[List : A. Neutralization B. Precipitation C. Direct combination D. Substitution ]
(i) Lead chloride
(ii) Iron (II) sulphate
(iii) Sodium nitrate
(iv) Iron (III) chloride
State how would you prepare copper (II) oxide from
Copper Carbonate
Define the following term:
Neutralisation
Choosing the correct words given in brackets, complete the sentence given below: Copper sulphate from copper.
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(IIl) chloride.
(iv) lead (II) chloride.
(v) sodium chloride.
Explain why Anhydrous FeCl3 cannot be prepared by heating hydrated iron (III) chloride.
For each of the salt: A, B, C and D, suggest a suitable method of its preparation.
D is a soluble salt of zinc.
Choose the most appropriate answer from
(SO2, SiO2, Al2O3, CO, MgO, Na2O)
An oxide which when dissolved in water form acid.
