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प्रश्न
The aqueous solutions of copper sulphate and zinc sulphate appear
(A) blue and green respectively
(B) green and colourless respectively
(C) blue and brown respectively
(D) blue and colourless respectively.
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उत्तर
The aqueous solution of copper sulphate and zinc sulphate appear blue and colourless respectively.
The Correct Answer is D
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संबंधित प्रश्न
Complete the following reaction, balance it and write the name of the products CuO + HCI →_________ + _________
When the substance ‘A’ is added to a solution of BaSO4, a yellow precipitate is formed.
- What do you think substance A is likely to be?
- Name the precipitate.
- Which type of reaction is this?
Write the balanced chemical equation for the following and identify the type of reaction.
\[\ce{Potassium bromide (aq) + Barium iodide (aq) -> Potassium iodide (aq) + Barium bromide (s)}\]
What type of chemical reaction is represented by the following equation?
PQ + RS → PS + RQ
A red-brown metal X forms a salt XSO4. When hydrogen sulphide gas is passed through an aqueous solution of XSO4, then a black precipitate of XS is formed alongwith sulphuric acid solution.
(a) What could the salt XSO4 be?
(b) What is the colour of salt XSO4?
(c) Name the black precipitate XS.
(d) By using the formula of the salt obtained in (a) above, write an equation of the reaction which takes place when hydrogen sulphide gas is passed through its aqueous solution.
(e) What type of chemical reaction takes place in this case?
Solutions of copper sulphate, iron sulphate and zinc sulphate are prepared and marked I, II and III respectively. Few pieces of aluminium are added to each solutions. After some time a change will be observe in
(A) I and II
(B) II and III
(C) III and I
(D) All the three
If sodium chloride is added to the silver nitrate solution:
a. which precipitate is formed?
b. name the type of reaction.
c. write the chemical equation.
In a double displacement reaction such as the reaction between sodium sulphate solution and barium chloride solution:
- exchange of atoms takes place
- exchange of ions takes place
- a precipitate is produced
- an insoluble salt is produced
The correct option is:
The following reaction is an example of:
\[\ce{4NH3_{(g)} + 5O2_{(g)} -> 4NO_{(g)} + 6H2O_{(g)}}\]
(i) displacement reaction
(ii) combination reaction
(iii) redox reaction
(iv) neutralisation reaction
Balance the following chemical equation and identify the type of chemical reaction.
`"TiCl"_4("l") + "Mg"("s") -> "Ti"("s") + "MgCl"_2("s")`
