Pls answer the following questions. Urgent Only choose the correct option
Substance X reacts with dilute HCL violently; Y reacts slowly while Z does not react at all. X,Y,Z could be respectively *
1.Cu, Al, Fe
2.Al, Na, Cu
3.Na, Cu, Fe
4.K, Al, Cu
When zinc reacts with dilute sulphuric acid, a salt is formed with the release of a gas. The gas produced during this puts off a burning candle with a pop sound. The gas evolved during this reaction is: *
Sulphur dioxide
Oxygen
Hydrogen
Hydrogen Sulphide
Why should the food stuffs like orange juice, pickles should not be kept in iron or aluminum containers because ___ present in them react with the containers.
The formula of sodium Aluminate
Aluminium reacts with sodium hydroxide to liberate _____ and _____________. *
Sodium Alumuinate
Alumiuium hydroxide
Hydrogen gas
Both A & C
What happens when dilute sulphuric acid is poured on a copper plate? *
Copper sulphate formed
Zinc sulphate formed
Copper chloride formed
Zinc sulphate formed.
Metals generally react with dilute acids to produce hydrogen gas. Which one of the following metals does not react with dilute hydrochloric acid? *
Magnesium
Aluminium
Iron
Copper
The metal which produces hydrogen gas on reaction with dilute hydrochloric acid as well as sodium hydroxide solution is *
Copper
Iron
Aluminum
Sodium
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Answer:
Classify the following reactions into different types, giving reason.
(a) CaO(s) + SiO2(g)
->CaSiO,(s)
(b) KOH(aq) + HCl(aq)
->KCl(aq) + H2O(1)
(c) Cu(s) + 2AgNO,(aq)
->Cu(NO3),(aq) + 2Ag(s)
(d) BaCO(S)
->BaO(s) + CO,(g)
Explanation:
Classify the following reactions into different types, giving reason.
(a) CaO(s) + SiO2(g)
->CaSiO,(s)
(b) KOH(aq) + HCl(aq)
->KCl(aq) + H2O(1)
(c) Cu(s) + 2AgNO,(aq)
->Cu(NO3),(aq) + 2Ag(s)
(d) BaCO(S)
->BaO(s) + CO,(g)
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