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10 Questions

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Stoichiometry and Gas Laws

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Questions and Answers

What is the primary function of HCl in the stomach?

To kill bacteria in the food (correct)

To protect vital cells from acidic pH

To increase the pH of the mouth

To secrete highly acidic substance for self defense

Which of the following statements is true about Litmus solution?

It is a solution of different dyes obtained from lichen plants (correct)

It is a solution of different acids obtained from lichen plants

It is a solution of different bases obtained from lichen plants

It is a solution of different salts obtained from lichen plants

What happens to the pH of the mouth when sour or sweet food is consumed?

The pH of the mouth decreases (correct)

The pH of the mouth remains constant

The pH of the mouth increases

The pH of the mouth becomes neutral

What is the normal pH range of the human body?

pH 7 to pH 7.8 Signup and view all the answers

What is the function of a buffer solution?

To resist a change in pH upon the addition of small amounts of acid or base Signup and view all the answers

Which of the following indicators turns red in acidic medium?

Methyl red Signup and view all the answers

Which of the following animals secretes highly acidic substance for self defense?

Bee Signup and view all the answers

What happens to the color of red litmus when it comes into contact with a base?

It turns blue Signup and view all the answers

What is the purpose of the inner lining of the stomach?

To protect vital cells from acidic pH Signup and view all the answers

What is the significance of pH in the human body?

It affects the health of humans Signup and view all the answers