BIOCHEMISTRY
PH
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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base
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acid
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buffer
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none of these
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Detailed explanation-1: -The material is tested using litmus paper, which turns red if it’s acidic and blue if it’s alkaline, or basic. Litmus paper is red when the pH is less than 4.5 and blue when the pH is greater than 8.3. If the paper turns purple, the pH level is close to neutral.
Detailed explanation-2: -(AL-kuh-ly) A chemical that can dissolve in water, combine with acids to form salts, and make acids less acidic. Alkalis have a bitter taste and turn certain dyes blue. Some alkalis can help the body work the way it should. An example of an alkali is sodium hydroxide.
Detailed explanation-3: -The substance is alkaline when: the red Litmus paper turns blue and the blue Litmus paper is unaffected.
Detailed explanation-4: -For instance, ammonia gas, which is alkaline, turns red litmus paper blue.
Detailed explanation-5: -Litmus indicator solution turns red in acidic solutions and blue in alkaline solutions. It turns purple in neutral solutions.