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UPTET Paper 2 Math and Science Model Test 2

Section: Mathematics and Science

Question : 109 of 150

Marks: +1, -0

Which one of the following is a cation?

Solution:

Concept:

Cations are positively charged ions, while anions are negatively charged ions.

Explanation:

Check the charge of each ion:

Ammonium (

NH_4^+

) has a charge of

+1

, so it is a cation.

Carbonate (

CO_3^{2-}

) has a charge of

-2

, so it is an anion.

Nitrate (

NO_3^-

) has a charge of

-1

, so it is an anion.

Hydroxide (

OH^-

) has a charge of

-1

, so it is an anion.

Answer:

C. Ammonium

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