Advertisements
Advertisements
Question
A metal less reactive and another metal more reactive than hydrogen are:
(a) aluminium and lead
(b) iron and magnesium
(c) copper and tin
(d) copper and mercury
Advertisements
Solution
(c) copper and tin
Copper lies below hydrogen and tin lies above hydrogen in the reactivity series of metals.
APPEARS IN
RELATED QUESTIONS
Write the chemical reaction when iron reacts with dilute H2SO4.
A solution of _________________ in water is green in colour.
(a) CuSO4
(b) FeSO4
(c) ZnSO4
(d) Al2(SO4)3
Name the metal which has been placed at the bottom of the reactivity series.
Write equation for the reaction of sodium with oxygen.
Give reason for the following:
Blue colour of copper sulphate solution is destroyed when iron filings are added to it.
Complete and balance the following equation:
Na + O2 →
Complete and balance the following equation:
Fill in the following blank with suitable word:
Calcium is a ................. reactive metal than sodium.
Name two metals which can, however, liberate hydrogen gas from very dilute nitric acid.
How do metals react with hydrogen? Explain with an example.
Name two metals which cannot displace hydrogen from dilute acids.
Why is white phosphorus kept immersed under water?
Describe the reaction of potassium with water. Write the equation of the reaction involved.
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 Zinc with dilute hydrochloric acid.
Name the products formed. Also indicate the physical states of all the substances involved.
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?
Rewrite the following statement by selecting the correct option.
A solution of Al2(SO4)3 in water is _____________.
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.
Which of the following property is not responsible for copper to be used as electrical conduction wires?
