Mukul Sahgal and A C Sahgal Solutions for Exercise 2: ORAL QUESTIONS

Author:Mukul Sahgal & A C Sahgal

Mukul Sahgal Science Solutions for Exercise - Mukul Sahgal and A C Sahgal Solutions for Exercise 2: ORAL QUESTIONS

Attempt the practice questions from Exercise 2: ORAL QUESTIONS with hints and solutions to strengthen your understanding. Living Science 7 solutions are prepared by Experienced Embibe Experts.

Questions from Mukul Sahgal and A C Sahgal Solutions for Exercise 2: ORAL QUESTIONS with Hints & Solutions

MEDIUM
7th CBSE
IMPORTANT
Living Science 7>Chapter 8 - Physical and Chemical Changes>ORAL QUESTIONS>Q 1

Two chemicals in solution form react, forming an insoluble solid that settles down. What is the settled solid known as? (Precipitate / Solute)

MEDIUM
7th CBSE
IMPORTANT
Living Science 7>Chapter 8 - Physical and Chemical Changes>ORAL QUESTIONS>Q 2

In which reaction will heat be released–exothermic reaction or endothermic reaction?
 

MEDIUM
7th CBSE
IMPORTANT
Living Science 7>Chapter 8 - Physical and Chemical Changes>ORAL QUESTIONS>Q 3

Nitrogen + Oxygen → Nitrogen dioxide. What type of reaction is this? (Decomposition/ Combination)

MEDIUM
7th CBSE
IMPORTANT
Living Science 7>Chapter 8 - Physical and Chemical Changes>ORAL QUESTIONS>Q 4

What is the characteristic of the reaction:
MN + PQ → MQ + PN
What is the general name given to such reactions? (Double displacement reaction/ Combination reaction/ Decomposition reaction)

MEDIUM
7th CBSE
IMPORTANT
Living Science 7>Chapter 8 - Physical and Chemical Changes>ORAL QUESTIONS>Q 5

Which of the following is true for a substance that is oxidized in a chemical reaction–oxygen is added to it, hydrogen is removed from it, or both are true?