An element forms an oxide A 2 O 3 that is acidic in nature. Identify A as a metal or a non-metal.

An element forms an oxide A 2 O 3 that is acidic in nature. A is non-metal because non-metallic oxides are acidic in nature while metallic oxides are basic in nature.

E M B I B E

Core Science Chemistry>Chapter 3 - Metals And Non-Metals>EXERCISE 3C>Q 13

EASY

10th CBSE

IMPORTANT

Earn 100

Name any one metal that reacts neither with cold water nor with hot water but reacts with heated steam to produce hydrogen gas.

Important Questions on Metals And Non-Metals

EASY

10th CBSE

IMPORTANT

Core Science Chemistry>Chapter 3 - Metals And Non-Metals>EXERCISE 3C>Q 14

Write the chemical equation for the reaction taking place when a piece of zinc is placed in copper (II) sulphate solution.

EASY

10th CBSE

IMPORTANT

Core Science Chemistry>Chapter 3 - Metals And Non-Metals>EXERCISE 3C>Q 15

An element forms an oxide A₂O₃ that is acidic in nature. Identify A as a metal or a non-metal.

MEDIUM

10th CBSE

IMPORTANT

Core Science Chemistry>Chapter 3 - Metals And Non-Metals>EXERCISE 3C>Q 16

Generally, when metals are treated with mineral acids, hydrogen gas is liberated but when metals (except Mn and Mg), are treated with HNO₃, hydrogen is not liberated, why?

EASY

10th CBSE

IMPORTANT

Core Science Chemistry>Chapter 3 - Metals And Non-Metals>EXERCISE 3C>Q 17

Give reason: For making hydrogen by reaction with hydrochloric acid, granulated zinc is preferred to a block of zinc.

EASY

10th CBSE

IMPORTANT

Core Science Chemistry>Chapter 3 - Metals And Non-Metals>EXERCISE 3C>Q 18

Write balanced chemical equation for the reaction taking place when steam is passed over red hot iron.

MEDIUM

10th CBSE

IMPORTANT

Core Science Chemistry>Chapter 3 - Metals And Non-Metals>EXERCISE 3C>Q 1

Choose a metal out of the following that reacts with hot water but not with cold water: sodium, magnesium, iron.
Mention the products formed during the reaction.

MEDIUM

10th CBSE

IMPORTANT

Core Science Chemistry>Chapter 3 - Metals And Non-Metals>EXERCISE 3C>Q 2

Choose the metal from the list given below that can displace zinc from zinc sulphate solution:

lead, copper, magnesium, silver.
Write the equation for the chemical reaction involved.

MEDIUM

10th CBSE

IMPORTANT

Core Science Chemistry>Chapter 3 - Metals And Non-Metals>EXERCISE 3C>Q 3

What is the activity series of metals? Rearrange the following metals in increasing order of reactivity:

Aluminium, zinc, mercury.