Advertisements
Advertisements
Question
The least reactive metal among the following is:
(a) sodium
(b) silver
(c) copper
(d) lead
Advertisements
Solution
(b) silver
Because silver lies below other metals in the reactivity series.
APPEARS IN
RELATED QUESTIONS
‘E’ is an element which reacts with oxygen to form an oxide E2O. An aqueous solution of E2O turns red litmus blue, so:
i. What is the nature of oxide E2O ?
ii. Write the name of element ‘E’.
Write equations for the reactions of iron with steam.
The solution of Aluminium sulphate in water is .....................
(a) Green
(b) Colourless
(c) Pink
(d) Blue
A solution of _________________ in water is green in colour.
(a) CuSO4
(b) FeSO4
(c) ZnSO4
(d) Al2(SO4)3
State whether the following statement is true or false:
Non-metals react with dilute acids to produce a gas which burns with a 'pop' sound.
Write equation for the reaction of sodium with oxygen.
With the help of examples, describe how metal oxides differ from non-metal oxides.
Explain why, metals usually do not liberate hydrogen gas with dilute nitric acid.
Name another metal oxide which behaves like aluminium oxide.
What happens when calcium reacts with water? Write the chemical equation of the reaction of calcium with eater.
Which non-metal has been placed in the reactivity series of metals?
The elements whose oxides can turn phenolphthalein solution pink are:
(a) Na and K
(b) K and C
(c) Na and S
(d) K and P
The metals which can produce amphoteric oxides are:
(a) sodium and aluminium
(b) zinc and potassium
(c) calcium and sodium
(d) aluminium and zinc
An element X forms two oxides XO and XO2. The oxide XO is neutral but XO2 is acidic in nature. The element X is most likely to be:
(a) sulphur
(b) carbon
(c) calcium
(d) hydrogen
Zinc oxide is a metal oxide. Which of the following term best describes the nature of zinc oxide:
(a) an acidic oxide
(b) a basic oxide
(c) an amphoteric oxide
(d) a neutral oxide
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.
When calcium metal is added to water, the gas evolved does not catch fire but the same gas evolved on adding sodium metal to water catches fire. Why is it so?
What is the cause of chemical bonding (or chemical combination) of atoms of elements?
Write the chemical equation for the following reaction:
Calcium metal reacts with water.
Find the odd one out:
