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Question

Match the following:

1AlkaliAStrong base2NaOHBWeak base3NH4OHCBase soluble in water


A

1- B , 2-A , 3-C

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B

1- C , 2-A , 3-B

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C

1- C , 2-B , 3-A

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D

1- A , 2-C , 3-B

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Solution

The correct option is B

1- C , 2-A , 3-B


A base is a compound that reacts with an acid to give salt and water. Bases are bitter in taste and soapy to touch. E.g., Sodium hydroxide, calcium hydroxide, etc

A base which is soluble in water is called an alkali. The word alkali is Arabic which means 'ashes of a plant'. Earlier alkalis were made by burning wood and other plants. All alkalis are bases but all bases are not alkalis.

Bases which produce a high concentration of hydroxyl ions in water are called strong bases. E.g., Sodium hydroxide(NaOH), potassium hydroxide(KOH), etc.

Bases which dissociate in water only slightly and thus produce a low concentration of hydroxyl ions are called weak bases. E.g., Calcium hydroxide(Ca(OH)2) , ammonium hydroxide(NH4OH), etc.

1AlkaliCBase soluble in water2NaOHAStrong base3NH4OHBWeak base


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