Litmus Paper and Red Rose as an Indicator

GROUP 1

100

Q1. What happens to blue litmus paper in an acidic solution?

A. Turns Red
B. Turns Blue
C. Turns Green
D. No change  

(A) Turns Red 

200

Q2. A red rose indicator turns green in a solution. What prediction can you make?

A. Red litmus will turn blue.
B. Blue litmus will turn red.
C. Red rose will become pink.
D. The solution is acidic.

(A) Red litmus will turn blue.

300

Q3. Which observation correctly identifies a neutral substance?

A. Blue litmus → Red
B. Red litmus → Blue
C. Red rose → Green
D. No change in both litmus papers and red rose indicator

(D) No change in both litmus papers and red rose indicator

GROUP 2

100

Q1. Which of the following is an acidic substance?

A. Soap Solution
B. Toothpaste Solution
C. Lemon Juice
D. Baking soda solution  

(C) Lemon Juice 

200

Q2. Red rose indicator turns pink/red in:

A. Bases
B. Acids
C. Neutral substances
D. Salts

(B) Acids

300

Q3. A student observes:

• Blue litmus → Red
• Red rose → Dark pink

The substance is:
A. Basic
B. Neutral
C. Acidic
D. Salt solution

(C) Acidic

GROUP 3

100

Q1. Which litmus paper turns blue in a basic solution?

A. Blue Litmus
B. Red Litmus
C. Both Litmus papers
D. None

(B) Red Litmus

200

Q2. Which pair of substances is acidic?

A. Lemon juice and Vinegar
B. Soap solution and Toothpaste
C. Water and Salt Solution
D. Baking soda and Soap Solution

(A) Lemon juice and Vinegar

300

Q3. If a substance changes blue litmus to red and red rose indicator to pink, which household substance could it be?

A. Soap solution
B. Toothpaste solution
C. Lemon juice
D. Baking soda solution

(C) Lemon juice