Advertisements
Advertisements
Question
Why do gold ornaments look new even after several years of use?
Solution
Gold is a least reactive metal. It does not react with air, water, acids, alkalis and other gases in the environment. Due to this non-reactive nature, gold metal's shine lasts for years and gold ornaments look new even after several years of use.
APPEARS IN
RELATED QUESTIONS
A zinc ore gave CO2 on treatment with a dilute acid. Identify the ore and write its chemical formula.
Which gas is produced during the extraction of aluminium? At which electrode is this gas produced?
Give reasons, why aluminum is used in:
wrapping chocolates
An element has its electron configuration as 2,8,8,2. Now answer the following questions.
a) What is the atomic number of this element?
b) What is the group of this element?
c) To which period does this element belong?
Name the following:
The substance added to get rid of gangue in the extraction of metal.
What is passive iron?
Name : The metal which is liquid at room temperature.
Identify who I am!
Ore of Aluminum- ______
Explain the reactions of nonmetals with water with the help of examples.
Observe the following diagram and write answers.
- Name the method.
- Write anode reaction and cathode reaction.
- Why fluorspar and cryolite are added in the mixture?
