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प्रश्न
Name one metal more reactive and another less reactive than hydrogen.
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उत्तर
Lead is the metal that is more reactive than hydrogen and copper is the metal that is less reactive than hydrogen.
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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.
Which gas is produced when dilute hydrochloric acid is added to a reactive metal?
Name the metal which has been placed at the top of the reactivity series.
Name the metal which has been placed just below copper in the reactivity series.
Write equation for the reaction of sodium with oxygen.
Write equation for the reaction of magnesium with oxygen.
Complete and balance the following equation:
Cu (NO3)2 (aq) + Zn(s) →
Fill in the following blank with suitable word:
Calcium is a ................. reactive metal than sodium.
What type of oxides are formed when non-metals react with oxygen? Explain with an example.
Explain why, metals usually do not liberate hydrogen gas with dilute nitric acid.
Can we keep sodium immersed under water? Why?
You are given samples of three metals − sodium, magnesium and copper. Suggest any two activities to arrange them in order of their decreasing reactivities.
Write the equation for the reaction of Iron with dilute hydrochloric acid.
Name the products formed. Also indicate the physical states of all the substances involved.
The least reactive metal among the following is:
(a) sodium
(b) silver
(c) copper
(d) lead
An element X reacts with hydrogen, when heated, to form a covalent hydride H2X. If H2X has a smell of rotten eggs, the element X is likely to be:
(a) carbon
(b) sulphur
(c) chlorine
(d) phosphorus
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
State and explain the reaction, if any, of the following metals with a solution of copper sulphate:
(a) Gold
(b) Copper
(c) Zinc
(d) Mercury
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 cable manufacturing unit tested few elements on the basisof their physical properties.
| Properties | W | X | Y | Z |
| Malleable | Yes | No | No | Yes |
| Ductile | Yes | No | No | Yes |
| Electrical conductivity | Yes | Yes | Yes | No |
| Melting Point | High | Low | Low | High |
Which of the above elements were dicarded for usage by the company?
