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प्रश्न
Which of the two metals is more reactive?
Copper or silver
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उत्तर
Copper is more reactive than silver.
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संबंधित प्रश्न
Write equations for the reactions of calcium and potassium with water.
Which gas is produced when dilute hydrochloric acid is added to a reactive metal?
Write the chemical reaction when iron reacts with dilute H2SO4.
Name two metals which form amphoteric oxides.
Write an equation for the reaction of:
Sodium with oxygen
Give reasons for the following:
Blue colour of copper sulphate solution is destroyed when iron filings are added to it.
What type of oxides are formed when metals combine with oxygen? Explain with the help of an example.
Explain why, metals usually do not liberate hydrogen gas with dilute nitric acid.
Name another metal oxide which behaves like aluminium oxide.
Out of the following oxides, the amphoteric oxide is:
(a) Fe2O3
(b) Al2O3
(c) P2O5
(d) N2O
The metals which can produce amphoteric oxides are:
(a) sodium and aluminium
(b) zinc and potassium
(c) calcium and sodium
(d) aluminium and zinc
The elements whose oxides can turn litmus solution blue are:
(a) carbon and sulphur
(b) sodium and carbon
(c) potassium and magnesium
(d) magnesium and sulphur
An element E reacts with water to form a solution which turns phenolphthalein solution pink. The element E is most likely to be:
(a) S
(b) Ca
(c) C
(d) Ag
Which one of the following four metals would be displaced from the solution of its salt by the other three metals?
(a) Zn
(b) Ag
(c) Cu
(d) Mg
An element X forms two oxides XO and XO2. The oxide XO has no action on litmus solution but oxide XO2 turns litmus solution red.
(a) What is the nature of oxide XO?
(b) What is the nature of oxide XO2?
(c) Would you call element X a metal or a non-metal? Give reason for your choice.
(d) Can you give an example of element like X?
Name a metal which does not react with cold as well as hot water but reacts with steam.
Choose the correct alternative and rewrite the following:
Which of the following is lue in colour?
Which one among the following is an acidic oxide?
Which of the following property is not responsible for copper to be used as electrical conduction wires?
