Advertisements
Advertisements
Question
Stainless steel is very useful material for our life. In stainless steel, iron is mixed with
Options
Ni and Cr
Cu and Cr
Ni and Cu
Cu and Au
Advertisements
Solution
Ni and Cr
Explanation -
Stainless steel is an alloy of iron made by mixing different metals like about 11% of chromium, nickel, molybdenum and niobium etc. and carbon with a maximum concentration of about 1.2%.
APPEARS IN
RELATED QUESTIONS
Name two metals which will displace hydrogen from dilute acids, and two metals which will not.
What are amphoteric oxides?
Give reason:
Sodium, potassium and lithium are stored under oil.
Which of the following oxide(s) of iron would be obtained on the prolonged reaction of iron with steam?
Example of an amphoteric oxide is:
Which of the following metals liberate hydrogen with 5% HNO3?
(i) Cu
(ii) Zn
(iii) Mn
(iv) Mg
Which of the following oxide(s) of iron would be obtained on prolonged reaction of iron with steam?
Silver articles become black on prolonged exposure to air. This is due to the formation of
If copper is kept open in air, it slowly loses its shining brown surface and gains a green coating. It is due to the formation of
Metals generally react with dilute acids to produce hydrogen gas. Which one of the following metals does not react with dilute hydrochloric acid?
The metal which produces hydrogen gas on reaction with dilute hydrochloric acid as well as sodium hydroxide solution is ______.
Out of three metals, sodium, calcium and aluminium, which metal reacts most with water? Give the equation of reaction with all three metals.
Answer the questions based on the figure below:

- Which reaction is shown in the figure?
- Which gas is evolved in the reaction?
- Give an example of reactants that rapidly show this reaction. Give equations.
- Give an example of reactants that do not react rapidly.
- In what condition will reactants of (c) part react? Give equation.
Metal oxides generally react with acids, but few oxides of metal also react with bases. Such metallic oxides are:
- MgO
- ZnO
- Al2O3
- Cao
Write a chemical equation showing the ionic products formed on dissolving potassium hydroxide in water.
On adding dilute sulphuric acid to a test tube containing a metal ‘X’, a colourless gas is produced when a burning match stick is brought near it. Which of the following correctly represents the metal ‘X’?
