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प्रश्न
A student prepared an aqueous solution of CuSO4 in beaker X and an aqueous solution of FeSO4 in beaker Y. He then dropped some iron pieces in beaker X and some zinc pieces in beaker Y. After about 10 hours he observed that the solutions in X and Y respectively appear:
(A) blue and green
(B) colourless and pale green
(C) colourless and light blue
(D) greenish and colourless
उत्तर
Reaction in beaker X: Fe + CuSO4 (blue) -> FeSO4 (green) + Cu Reaction in beaker Y: Zn + FeSO4 (green) -> ZnSO4 (colourless) +Fe
The Correct Answer is D
संबंधित प्रश्न
Why is respiration considered an exothermic reaction? Explain.
One of the following is an endothermic reaction. This is:
(a) combination of carbon and oxygen to form carbon monoxide
(b) combination of nitrogen and oxygen to form nitrogen monoxide
(c) combination of glucose and oxygen to form carbon dioxide and water
(d) combination of zinc and hydrochloric acid to form zinc chloride and hydrogen
what tpye of reaction is the following:
2K + Cl → 2KCl
Define a combination reaction.
Select the correct answer for the statement given below:
The product formed during direct combination reaction of carbon dioxide and water.
Define a combination reaction. Give one example of an exothermic combination reaction.
Which of the following are exothermic processes?
(i) Reaction of water with quick lime
(ii) Dilution of an acid
(iii) Evaporation of water
(iv) Sublimation of camphor (crystals)
Balance the following chemical equation and identify the type of chemical reaction.
`"CaO"("s") + "SiO"_2("s") -> "CaSio"_3("s")`
Give the chemical reaction when a few pieces of slaked lime are added to a beaker half-filled with water. Will it be an endothermic or exothermic reaction?
A metal ribbon 'X' bums in oxygen with a dazzling white flame forming a white ash 'Y'. The correct description of X, Y and the type of reaction is:
