Indicators

Author:S P Singh
10th ICSE
IMPORTANT

Important Questions on Indicators

EASY
IMPORTANT
Selina Icse Concise Chemistry For Class 10>Practical Work>Indicators> Q 1

A given white crystalline salt was tested as follows: It is dissolved in water and the resulting solution of the salt turned blue litmus red. What conclusions can be drawn for this observation ?

EASY
IMPORTANT
Selina Icse Concise Chemistry For Class 10>Practical Work>Indicators> Q 2

How is the acidic nature of a gas suspected?

MEDIUM
IMPORTANT
Selina Icse Concise Chemistry For Class 10>Practical Work>Indicators> Q 3

Mention the colour changes observed when the following indicators are added.

Solutions Acid Alkalies
a Alkaline Phenolphthalein solution    
b Methyl orange solution    
c Neutral litmus solution    

 

EASY
IMPORTANT
Selina Icse Concise Chemistry For Class 10>Practical Work>Indicators> Q 4

How is the basic nature of a gas suspected?

MEDIUM
IMPORTANT
Selina Icse Concise Chemistry For Class 10>Practical Work>Indicators> Q 5

Carbon dioxide and sulphur dioxide gas can be distinguished by using: