NECO 2021 chemistry practical questions and answers

neco agricultural science questions and answers 2021

NECO 2021 chemistry practical questions and answers

 

(1ai)

Average volume of Acid used=23.40+23.50+23.60/3 =70.5/3=23.50cm3

 

(3a)

 

(i)Ca²+

 

(ii)Pb²+

 

 

 

 

(3bi)

 

concentrated acid can be defined as an acid formed when a large quantity of an acid dissolve in a small or little volume of water.

 

 

 

 

(3bii)

 

A strong acid is defined as a type of acid that ionize completely in a solution

 

 

 

 

(3c)

 

Activated charcoal is used as an adsorbent material

 

 

 

 

(3d)

 

(i)Reddish – Brown

 

(ii) I – red, II – brown.

 

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NECO 2021 Chemistry practical Questions and Answers
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