1. Vinegar
  2. Water
  3. Baking Soda
  4. Milk
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1 Answers

Option 1 : Vinegar

The correct answer is option 1 i.e., Vinegar

  • When you will dip blue litmus paper into vinegar, the color will change from Blue to red. as vinegar is an acid that will change the color of blue litmus paper to red.
  • When you will dip the red litmus paper into vinegar, the color remains unchanged. This is because the red litmus paper changes into blue when added to a base.
  • The main use of litmus is to test whether a solution is acidic or basic.
  • Blue litmus paper turns red under acidic conditions and red litmus paper turns blue under basic or alkaline conditions, with the color change occurring over the pH range of 4.5-8.3 at 25 degrees Centigrade.
Acid/ Base Chemical formula Uses
Vinegar CH3COOH It is used in food preparation, chutneys, etc.
Lime Water Ca (OH)2 To neutralize excess acidity.
Baking Soda NaHCO3 It is a leavening agent used in baked goods like cakes, muffins, and cookies.
Milk        - For drinking as it has important nutrients like calcium, phosphorus, B-vitamins, etc

 

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