Question

Solve and send Class 7 science solution table 5.4 ncert books.
Second column not required first that is initial colour column.​

Answer 1

Answer:I hope this will help

Answer 2

Answer:

The required solution is as below:

Explanation:

Litmus paper is an organic indicator. Neutral litmus paper is purple in colour. Neutral litmus paper turns red under acidic conditions and blue under alkaline conditions.

Initial colours:

• Shampoo - White colour
• Lemon juice - Light yellow colour
• Soda water - Transparent colour
• Sodium hydrogen carbonate - White solid crystalline
• Vinegar - Transparent colour
• Sugar solution - White colour
• Common salt - White colour

Final Colours:

• Shampoo - Blue colour
• Lemon juice - Blue colour
• Soda water - Blue colour
• Sodium hydrogen carbonate - Blue colour
• Vinegar - Red colour
• Sugar solution - Neutral colour
• Common salt - Neutral or no change in colour

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