EASY
10th CBSE
IMPORTANT
Earn 100

Name a metal in each case:
(i) it does not react with cold or hot water, but reacts with steam.
(ii) it does not react with any physical state of water.

Important Questions on Metals And Non-Metals

EASY
10th CBSE
IMPORTANT
Core Science Chemistry>Chapter 3 - Metals And Non-Metals>EXERCISE 3C>Q 5
When calcium metal is added 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?
EASY
10th CBSE
IMPORTANT
Core Science Chemistry>Chapter 3 - Metals And Non-Metals>EXERCISE 3C>Q 6
Iqbal treated a lustrous, divalent element M with sodium hydroxide. He observed the formation of bubbles in the reaction mixture. He made the same observations when this element was treated with hydrochloric acid. Suggest how can he identify the gas produced. Write chemical equations for both the reactions.
EASY
10th CBSE
IMPORTANT
Core Science Chemistry>Chapter 3 - Metals And Non-Metals>EXERCISE 3C>Q 7
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.
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.