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प्रश्न
Name a metal which It does not react with any physical state of water?
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उत्तर
Gold does not react with any physical state of water.
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संबंधित प्रश्न
Metal A has electronic configuration (2, 8, 1) and metal B has (2, 8, 8, 2). Which is more reactive? Why? Identify these metals.
What would you observe when zinc is added to a solution of iron (II) sulphate? Write the chemical reaction that takes place.
You must have seen tarnished copper vessels being cleaned with lemon or tamarind juice. Explain why these sour substances are effective in cleaning the vessels.
Give reasons why copper is used to make hot water tanks and not steel (an alloy of iron).
A solution of _________________ in water is green in colour.
(a) CuSO4
(b) FeSO4
(c) ZnSO4
(d) Al2(SO4)3
Explain the following reaction with the help of a balanced chemical equation:
Magnesium reacts with hot water.
Which of the two metals is more reactive: copper or silver?
Write equation for the reaction of sodium with oxygen.
Write equation for the reaction of magnesium with oxygen.
Explain why, metals usually do not liberate hydrogen gas with dilute nitric acid.
A copper plate was dipped in AgNO3 solution. After certain time, silver from the solution was deposited on the copper plate. State the reason why it happened. Give the chemical equation of the reaction involved.
Why is white phosphorus kept immersed under water?
Hydrogen is not a metal but still it has been assigned a place in the reactivity series of metals. Why?
Out of the following oxides, the amphoteric oxide is:
(a) Fe2O3
(b) Al2O3
(c) P2O5
(d) N2O
An element is soft and can be cut with a knife. If is very reactive and cannot be kept open in the air. It reacts vigorously with water. The element is most likely to be:
(a) Mg
(b) S
(c) P
(d) Na
CuSO4(aq) + Fe(s) → FeSO4(aq) + Cu(s)
FeSO4(aq) + Zn(s) → ZnSO4(aq) + Fe(s)
On the basis of the above reactions, indicate which is most reactive and which is least reactive metal out of zinc, copper and iron.
A zinc plate was kept in a glass container having CuSO4 solution. On examining it was found that the blue colour of the solution is getting lighter and lighter. After a few days, when the zinc plate was taken out of the solution, a number of small holes were noticed in it. State the reason and give chemical equation of the reaction involved.
Generally metals react with acids to give salt and hydrogen gas. Which of the following acids does not give hydrogen gas on reacting with metals (except Mn and Mg)?
