FORM TWO CHEMISTRY NECTA MULTIPLE CHOICE 2012

THE UNITED REPUBLIC OF TANZANIA NATIONAL EXAMINATION COUNCIL

CHEMISTRY FTNA 2012

(i)All domestic utensils made of iron undergo rusting when exposed to:

  1.  Air and fire
  2.  Air and oil
  3. Air and water 
  4. Water and oil
Choose Answer :

(ii)When a small amount of common salt is dissolved in a glass of water the mixture formed is:

  1. Heterogeneous 
  2. Homogeneous 
  3. Immiscible 
  4. Suspension
Choose Answer :

(iii) A chemist should acquire all of the following skills except:

  1. Experimentatio
  2. Observation 
  3. Problem identification 
  4. Surgery
Choose Answer :

(vi) An important property of oxygen which distinguishes it from other gases is that it:

  1. Burns and supports combustion
  2. Burns but does not support combustion 
  3. Neither burns nor supports combustion
  4. Supports combustion but does not burn
Choose Answer :

(v) The process of chlorination in water treatment aims at:

  1. Forming suspension 
  2. Killing micro-organisms 
  3. Making syrup 
  4. Removing bad odour
Choose Answer :

(vi) One of the following is not correct about coke being a better fuel than coal as it:

  1. Does not produce carbon dioxide gas
  2. Does not produce poisonous gas
  3. Has a higher heat content 
  4. Is clean and smokeless
Choose Answer :

(vii) Class E fire can best be extinguished by using:

  1. Carbon dioxide 
  2. Fire blanket
  3. Sand 
  4. Water
Choose Answer :

(viii)The following is a set of apparatuses which are used for heating:

A.crucible, test tube, evaporating dish

B.evaporating dish, tongs, crucible

C.test tube, evaporating dish, tongs

D.tongs, crucible, test tube

Choose Answer :

(ix)Which of the following methods can be used to get oil from cotton seeds?

A.Decantation  

B. Distillation

C. Grinding and distillation 

D. Grinding followed by squeezingChoose Answer :


(x)Which of the following apparatuses is suitable for measuring volumes of smaller quantities of liquids?

A.Beaker    

B. Burette

C. Conical flask 

D. Measuring cylinder

Choose Answer :

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