R P Rana Solutions for Chapter: Sample Test Paper 2, Exercise 1: Exercise 1

Author:R P Rana

R P Rana Science Solutions for Exercise - R P Rana Solutions for Chapter: Sample Test Paper 2, Exercise 1: Exercise 1

Attempt the practice questions on Chapter 11: Sample Test Paper 2, Exercise 1: Exercise 1 with hints and solutions to strengthen your understanding. Its All About Science - Chemistry solutions are prepared by Experienced Embibe Experts.

Questions from R P Rana Solutions for Chapter: Sample Test Paper 2, Exercise 1: Exercise 1 with Hints & Solutions

EASY
8th ICSE
IMPORTANT

The different forms of the same element are known as_____.

HARD
8th ICSE
IMPORTANT

Explain the following: 

Hydrogen is included in the activity series of metals, even though it is not a metal.

HARD
8th ICSE
IMPORTANT

Explain the following:

Enzymes act as catalysts in the human body processes.

HARD
8th ICSE
IMPORTANT

What is a chemical reaction? Explain any three types of chemical reactions.

HARD
8th ICSE
IMPORTANT

Explain the Bosch process. Draw a suitable diagram for the process.

HARD
8th ICSE
IMPORTANT

Why should we use zinc granules in Bosch process? Why should we not use nitric acid (even in its dilute form) during this process?

Note: This question given in the book seems to have error and the modified question should be as given below.

Why should we use zinc granules in laboratory process for the preparation of hydrogen gas? Why should we not use nitric acid (even in its dilute form) during this process?

HARD
8th ICSE
IMPORTANT

What is the water of crystallisation? Explain the effect of heat on water of crystallisation with a suitable example.

HARD
8th ICSE
IMPORTANT

Why should we not stand behind the running engine of a vehicle? Also explain the condition of Asphyxia in this concern.