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This assignment covers mostly Form 1 work, frequently asked questions, valuable questions for KCSE preparation. Lets start from the known to the unknown!
1) Explain why laboratory apparatus are made of glass. 2mks
2) State three safety rules used in the laboratory. 3mks
3) a.State any tree differences between a luminous flame and non –luminous flame. 3mks
b.The diagram below shows a Bunsen burner when in use.
Name the regions labeled E, D and C 3mks
4) Ink from a signature that forged a cheque was compared with ink from pens of three suspects A, B, C using paper chromatography. The results were as follows;
a) Describe how the ink was taken from the forged Cheque.
b).Which suspect was guilty?
5) State three safety rules used in the laboratory. 3mks
6) a.Explain why water is not used as a solvent in extraction of nuts. 2mks
b.Name the solvent that is used in extraction of nuts. 1mk
7) a.Define the term sublimation. 1mk
b.state two substances that undergoes sublimation. 2mks
8) The following set up was used to separate sand and water .study it and answer the questions that follows.
i. Identify the method of separation. 1mk
ii. Give a special name given to solid X and liquid Y. 2mks
iii. State an advantage of this method over decantation. 1mk
9) What is the name given to the hottest zone of non luminous flame? 1mk
10) State two long term effects of drug abuse. 2mks
11) Define the terms homogeneous mixture and heterogeneous mixture. 2mks
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