The p H of soil A is 7.5 while that of soil B is 4.5 . Which of the two soils, A or B , should be treated with powdered chalk to adjust its p H and why?

The pH of soil A is 7.5, and that of soil B is 4.5. The soil whose pH is less will be a more acidic character. Hence, soil B contains more acidic character. Therefore, it is treated with powdered chalk ( CaCO 3 ) to reduce its acidic character as chalk is basic.

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Why pH of the milk gets changed when it is converted into curd?

Important Questions on Acids, Bases and Salts

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Science>Chemistry>Acids, Bases and Salts>Neutralisation

Explain importance of pH in soil.

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Science>Chemistry>Acids, Bases and Salts>Neutralisation

Digestive fluids in the stomach have approximate pH of

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Science>Chemistry>Acids, Bases and Salts>Neutralisation

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Science>Chemistry>Acids, Bases and Salts>Neutralisation

A milkman adds a very small amount of baking soda to fresh milk.

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Science>Chemistry>Acids, Bases and Salts>Neutralisation

A milkman adds a very small amount of baking soda to fresh milk.

Why does this milk take a long time to set as curd?

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Science>Chemistry>Acids, Bases and Salts>Neutralisation

Fresh milk has a

pH

6

. When milk changes into curd. The

pH

value will

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Science>Chemistry>Acids, Bases and Salts>Neutralisation

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Science>Chemistry>Acids, Bases and Salts>Neutralisation

Why does tooth decay start when the pH of the mouth is lower than

5.5

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Science>Chemistry>Acids, Bases and Salts>Neutralisation

Explain the

p H

change as the cause of tooth decay. How can tooth decay caused by pH change be prevented?

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Science>Chemistry>Acids, Bases and Salts>Neutralisation

What do you think will be the

p H

in the stomach of a person suffering from indigestion: less than

7

or more than

7

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Science>Chemistry>Acids, Bases and Salts>Neutralisation

Why is it wrong to treat a wasp sting with baking soda solution?

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Science>Chemistry>Acids, Bases and Salts>Neutralisation

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What can be done to lessen the danger to the lives of aquatic animals in the lake?

HARD

Science>Chemistry>Acids, Bases and Salts>Neutralisation

The

p H

of soil

A

7.5

while that of soil

B

4.5

. Which of the two soils,

A

B

, should be treated with powdered chalk to adjust its

p H

and why?

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Science>Chemistry>Acids, Bases and Salts>Neutralisation

Under what soil condition do you think a farmer would treat the soil of his fields with quick lime (calcium oxide) or slaked lime (calcium hydroxide) or chalk (calcium carbonate)?

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Science>Chemistry>Acids, Bases and Salts>Neutralisation

Wasp sting contains:

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Science>Chemistry>Acids, Bases and Salts>Neutralisation

A milkman adds a very small amount of baking soda to fresh milk. Why does this milk take a long time to set as curd?

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Science>Chemistry>Acids, Bases and Salts>Neutralisation

What is tooth enamel chemically? State the conditions when it starts corroding. What happens when food particles left in the mouth after eating degrade? Why do doctors suggest use of tooth powder/toothpaste to prevent tooth decay?

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Science>Chemistry>Acids, Bases and Salts>Neutralisation

What happens during a bee sting? What is its remedy?

Why pH of the milk gets changed when it is converted into curd?

Important Questions on Acids, Bases and Salts

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