MEDIUM
Earn 100

Peel a beet root with the help of peeler and cut into small pieces with the help of knife. Take these pieces in a mortar and crush well and obtain extract by adding water. Filter the extract through a filter paper and collect filtrate. Take four transparent glasses and label it as A, B, C, D and write your observation in table given.

S.No. Glass Solution Observations
1. A Vinegar  
2. B Soda water  
3. C Lemon juice  
4. D Baking soda solution  

 

Important Questions on Acids, Bases and Salts

EASY
What happens, when methyl orange solution mixed with HCl?
MEDIUM

You are provided with aqueous solutions of three salts A, B and C23 drops of blue litmus solution, red litmus solution and phenolphthalein were added to each of these solutions in separate experiments. The change in colour of different indicators were recorded in the following table:

Sample  With blue litmus solution   With red litmus solution    With phenolphthelein
     A            No change            Turns blue          Turns pink
     B            No change            No change          No change
    C            Turns red            No change          No change

On the basis of above observations, identify A, B and C from the following options:

MEDIUM
A solution turns methyl orange into yellow the approximate pH of solution is
EASY
The indicators which turn red in acid solution are:
MEDIUM

Which of the following is not an olfactory indicator?

MEDIUM
The colour of Methyl orange in alkali solutions is _____ .
EASY

An indicator is added to Potassium Hydroxide and the solution turns pink:

Name the indicator that is added.

EASY
A substance is sour in taste, not soapy to touch and has no effect on yellow turmeric solution. It will affect _____ litmus paper.
MEDIUM
What is an indicator? Name three indicators.
MEDIUM
Litmus is a dye which is extracted from _____.
(Blue, natural, neutral, indicators, lichens)
EASY
Hydrochloric acid solution affects ______ litmus paper.
MEDIUM
Name the source from which litmus solution is obtained. What is the use of this solution?
EASY

Turmeric is an example of a _____ indicator 

(Blue, natural, neutral, indicators, lichens)

MEDIUM
Dorji has a few bottles of soft drink in his restaurant. But, unfortunately, these are not labelled. He has to serve the drinks on the demand of customers. One customer wants acidic drink, another wants basic and third one wants neutral drink. How will Dorji decide which drink is to be served to whom?
MEDIUM
Which one of these is not a natural indicator?
HARD
Three liquids are given to you. One is hydrochloric acid, another is sodium hydroxide and the third is a sugar solution. How will you identify them? You have only turmeric indicator.
EASY
Name one natural indicator and one synthetic indicator.
EASY
Baking soda solution turns pink china rose indicator green; it is______ solution.
EASY
The substance which turns blue litmus red is______.