EASY
10th CBSE
IMPORTANT
Earn 100

When a metal X is treated with cold water, it gives a basic salt Y with molecular formula XOH (Molecular mass = 40) and liberates a gas Z, which easily catches fire. Identify X, Y and Z and also write the reaction involved.

Important Questions on Metals And Non-Metals

EASY
10th CBSE
IMPORTANT
Core Science Chemistry>Chapter 3 - Metals And Non-Metals>EXERCISE 3C>Q 8
Explain the following: Reactivity of Al decreases if it is dipped in HNO3
EASY
10th CBSE
IMPORTANT
Core Science Chemistry>Chapter 3 - Metals And Non-Metals>EXERCISE 3C>Q 8
Explain the following: Carbon cannot reduce the oxides of Na or Mg
EASY
10th CBSE
IMPORTANT
Core Science Chemistry>Chapter 3 - Metals And Non-Metals>EXERCISE 3C>Q 8
Explain the following: NaCl is not a conductor of electricity in the solid state whereas it conducts electricity in the aqueous solution as well as in molten state.
MEDIUM
10th CBSE
IMPORTANT
Core Science Chemistry>Chapter 3 - Metals And Non-Metals>EXERCISE 3C>Q 9
An element A reacts with water to form a compound B that is used in white washing. The compound B on heating forms an oxide C that on treatment with water gives back B. Identify A, B and C and give the reactions involved.
MEDIUM
10th CBSE
IMPORTANT
Core Science Chemistry>Chapter 3 - Metals And Non-Metals>EXERCISE 3C>Q 1
Name two metals that react violently with cold water. Write any three observations you would make, when such a metal is dropped in water. How would you identify the gas evolved, if any, during the reaction.
EASY
10th CBSE
IMPORTANT
Core Science Chemistry>Chapter 3 - Metals And Non-Metals>EXERCISE 3C>Q 2
What is an "activity series" of metals? Arrange the metals Zn, Mg, Al, Cu and Fe in a decreasing order of reactivity.
EASY
10th CBSE
IMPORTANT
Core Science Chemistry>Chapter 3 - Metals And Non-Metals>EXERCISE 3C>Q 2
What would you observe when you put :
(i) Some zinc pieces into blue copper sulphate solution?
(ii) Some copper pieces into green ferrous sulphate solution?
EASY
10th CBSE
IMPORTANT
Core Science Chemistry>Chapter 3 - Metals And Non-Metals>EXERCISE 3C>Q 2
Name a metal that combines with hydrogen gas. Name the compound formed.