Advertisements
Advertisements
Question
Observe the given figure of reactivity series of metals and answer the following questions:

Reactivity series of metals
- Name two metals which react with water.
- Name two moderately reactive metals.
- Name the most highly reactive metal and the most less reactive metal.
Advertisements
Solution
- Two metals that react with water: Potassium, sodium
- Two moderately reactive metals: Zinc, iron
- 1. Most highly reactive metal: Potassium
2. Most less reactive metal: Gold
APPEARS IN
RELATED QUESTIONS
Give reasons.
Aluminium is a highly reactive metal, yet it is used to make utensils for cooking.
A man went door to door posing as a goldsmith. He promised to bring back the glitter of old and dull gold ornaments. An unsuspecting lady gave a set of gold bangles to him which he dipped in a particular solution. The bangles sparkled like new but their weight was reduced drastically. The lady was upset, but after a futile argument, the man beat a hasty retreat. Can you play the detective to find out the nature of the solution he had used?
Name the following:
The property possessed by metals by which they can be beaten into sheets.
How is zinc extracted from its carbonate or (calamine)? Explain with equations.
Define the terms gangue.
Name the gas evolved when cinnabar ore is roasted.
Name two metals which are found in nature mainly in the free state (as metallic elements).
Which of the following pair of metals exists in their native state in nature?
(a) Ag and Hg
(b) Ag and Zn
(c) Au and Hg
(d) Au and Ag
Answer the following questions based on the extraction of aluminium from alumina by Hall - Heroult’s Process :
What is the function of cryolite used along with alumina as the electrolyte?
The following question relate to the extraction of aluminium by electrolysis.
Give the equation for the reaction which takes place at the cathode.
Name:
The allotrope of the non-metal carbon which conducts electricity.
Calcium, copper, lead, aluminium, zinc, chromium, magnesium, iron.
Choose the major metals from the list given above to make the following alloys:
(a) Stainless steel
(b) brass
Name the following :
The Process of heating an ore to a high temperature in the presence of air.
Iron is _______.
Sulphide ores : Roasting : : Carbonate ores : _______
Explain the concept of Roasting.
Explain the following reaction with the balanced equation.
Zinc sulphide is heated strongly in excess of air
Explain in brief types of extraction of highly reactive metals according to their reactivity.
Which of the following metals exist in their native state in nature?
(i) Cu
(ii) Au
(iii) Zn
(iv) Ag
Care must be taken while diluting concentrated nitric acid with water. Why?
