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Chemistry Question Paper

Chemistry

Course:Secondary Level

Exam Year:2012

1a. Define chemistry 2mks
b. Give 3 branches of chemistry 3mks
c. Give 2 importance of studying chemistry 2mks
2. Why is a non luminous flame preferred for heating 2mks
3. Under what conditions in a bumpem would one form a luminous or a non luminous flame 3mks
4. State 10 labalotory rules that a student should consider 10mks
5. Describe how you would separate a mixture of common salt and sand. 5mks
6. Describe how you would separate a mixture sulphure and iron filing 3mks
7. Suggest three types of mixture in the labolatory 3mks
8. Name the solvent that can 2mks
a. be used to remove ink from the clothes
b.cleaning greasy hands
9. A certain indicator war added to a solution. The PH value on the scale that was used with this indicator was read as 6.5
a. Name the indicator 1mk
b.state the nature of the solution
10. Name the element present in the following compounds
a. Zinc oxide 1mk
b.lead oxide 1mk
c.solution oxide 1mk
d. Magnesium chloride 1mk
13. State whether the solution which have the following PH value over acidic basic or neutral. PH3, PH6, PH12, PH7, PH8
Which of the Ph listed above is of
i. A strong acid 1mk
ii.a weak base 1mk
iii.a strong base 1mk
iv. A weak acid 1mk
v. A neutral solution 1mk
14. Define a drug 1mk
b the mis use of drug 1mk

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