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question_answer1) Hydrochloric acid is the concentrated acid. Which one of the following organs secretes hydrochloric acid in the human body?
question_answer2) Indicators are used to indicate the nature of the substance. Which one of the following is called natural indicator?
question_answer3) From the options given below, choose the correct option for the natural colour of litmus?
question_answer4) Which one of the following is obtained from tree for the making of litmus?
question_answer5) Litmus is the natural indicator. Which one of the following is called synthetic indicator?
question_answer6) A rose is used as the indicator in the chemical laboratory. Name it
question_answer7) What is the Ph value of a strong acid, if indicator turns from blue to red?
question_answer8) Dark blue is the colour of indicator on dissolving into which one of the following solution?
question_answer9) Ph value of a solution is 10. What is the nature of the solution?
question_answer10) Which one of the following is the formula of nitric acid?
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