Balance the equation. MnO 2 + HCI → MnCl 2 + H 2 O + Cl 2

Manganese dioxide reacts with hydrochloric acid to forms Manganese chloride, water and chlorine. This is a redox reaction. MnO 2 + 4 HCI → MnCl 2 + 2 H 2 O + Cl 2

Balance the equation. Pb 3 O 4 → PbO + O 2

Lead tetroxide is the inorganic compound, upon heating emits toxic fumes of lead at ~ 500 0 C with evolution of oxygen. 2 Pb 3 O 4 → 6 PbO + O 2

Balance the equation. Cu + O 2 → △ CuO

Copper metal when exposed to air in rainy season, turns green due to corrosion. 2 Cu + O 2 → △ 2 CuO

Balance the equation. BaCl 2 + Al 2 ( SO 4 ) 3 → AlCl 3 + BaSO 4

Barium chloride reacts with aluminium sulphate and give barium sulphate precipitate. According to law of conservation of mass, each side of the chemical equation must represent the same quantity of any particular element. 3 BaCl 2 + Al 2 ( SO 4 ) 3 → 2 AlCl 3 + 3 BaSO 4

E M B I B E

All In One ICSE Chemistry>Chapter 1 - The Language of Chemistry>EXAM PRACTICE

Shikha Goel and Saleha Parvez Solutions for Chapter: The Language of Chemistry, Exercise 4: EXAM PRACTICE

Author:Shikha Goel & Saleha Parvez

Shikha Goel Chemistry Solutions for Exercise - Shikha Goel and Saleha Parvez Solutions for Chapter: The Language of Chemistry, Exercise 4: EXAM PRACTICE

Attempt the practice questions on Chapter 1: The Language of Chemistry, Exercise 4: EXAM PRACTICE with hints and solutions to strengthen your understanding. All In One ICSE Chemistry solutions are prepared by Experienced Embibe Experts.

Questions from Shikha Goel and Saleha Parvez Solutions for Chapter: The Language of Chemistry, Exercise 4: EXAM PRACTICE with Hints & Solutions

MEDIUM

9th ICSE

IMPORTANT

All In One ICSE Chemistry>Chapter 1 - The Language of Chemistry>EXAM PRACTICE>Q 5

The formula of caustic potash is_____.

HARD

9th ICSE

IMPORTANT

All In One ICSE Chemistry>Chapter 1 - The Language of Chemistry>EXAM PRACTICE>Q 58

Balance the equation.
${MnO}_{2} + HCI \overset{}{\to} {MnCl}_{2} + H_{2} O + {Cl}_{2}$

HARD

9th ICSE

IMPORTANT

All In One ICSE Chemistry>Chapter 1 - The Language of Chemistry>EXAM PRACTICE>Q 58

Balance the equation.
${Pb}_{3} O_{4} \overset{}{\to} PbO + O_{2}$

HARD

9th ICSE

IMPORTANT

All In One ICSE Chemistry>Chapter 1 - The Language of Chemistry>EXAM PRACTICE>Q 58

Balance the equation.
$Cu + O_{2} \overset{△}{\to} CuO$

HARD

9th ICSE

IMPORTANT

All In One ICSE Chemistry>Chapter 1 - The Language of Chemistry>EXAM PRACTICE>Q 58

Balance the equation.
${BaCl}_{2} + {Al}_{2} ({SO}_{4})_{3} \overset{}{\to} {AlCl}_{3} + {BaSO}_{4}$

HARD

9th ICSE

IMPORTANT

All In One ICSE Chemistry>Chapter 1 - The Language of Chemistry>EXAM PRACTICE>Q 59

Calculate the relative molecular mass of the following compound.
Lead sulphate
(Given, atomic masses of various elements, $Ca = 40 u$ , $S = 32 u$ , $O = 16 u$ , $Pb = 207 u$ )