Advertisements
Advertisements
प्रश्न
Arrange the following metals in the increasing order of their reactivities:
Copper, Zinc, Aluminium, and Iron
Advertisements
उत्तर
Among the following given metals, aluminum is most reactive and copper is least reactive in nature. The reactivity order of the given metals is Al>Zn>Fe>Cu.
APPEARS IN
संबंधित प्रश्न
Write equations for the reactions of calcium and potassium with water.
Differentiate between metal and non-metal on the basis of their chemical properties.
The solution of Aluminium sulphate in water is .....................
(a) Green
(b) Colourless
(c) Pink
(d) Blue
Why are metals called electropositive elements whereas non-metals are called electronegative elements?
Write equation for the reaction of magnesium with oxygen.
What happens when a metal reacts with dilute hydrochloric acid? Explain with the help of an example.
One of the following is not a neutral oxide. This is:
(a) CO
(b) H2O
(c) N2O
(d) Na2O
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
Write a chemical equation to illustrate the use of aluminium for joining cracked railway lines.
Answer the following question:
An element X on reacting with oxygen forms an oxide X2O. This oxide dissolves in water and turns red litmus blue. State whether element X is metal or a non - metal. Explain with a proper example.
