02. LABORATORY TECHNIQUES AND SAFETY


01.  For each of the following items, choose the most correct answer from the given alternatives and write its letter beside the item number in your answer sheet.
i)     The equipment used in the laboratory during experimentation are called:
A. Apparatii
B. Floppy clothing
C. Irritant
D. Bunsen burner

ii)   A special room where scientific experiments are conducted is:
A. An apparatus
B. A laboratory
C. A storage room
D. A source of water

iii)  The symbols found on chemical containers, especially those used in the laboratory are:
A. Bunsen burners
B. First Aid Kit
C. Warning signs
D. Drugs

iv)   The burns caused by hot liquids or vapour are called:
A. Shock
B. Bruises
C. Bleeding
D. Scalds

v)     A sudden loss of consciousness caused by lack of sufficient blood in the brain is:
A. Fainting
B. Bleeding
C. Suffocation
D. Burns

Answers:
i
ii
iii
iv
v






02.  (a) Define laboratory
(b) List any five (5) features of a good laboratory
(c) List any three (3) laboratory rules after doing practical.

03.  (a) Why is it beneficial to take note of the warning signs when working with chemicals in the laboratory?
(b) Draw and give meaning of any five (5) chemical warning signs.

04.  (a) List any four (4) apparatii that can be used to measure volumes of liquids in the laboratory.
(b) An apparatus used to measure fixed volume of liquid in the laboratory is a ______________.

05.  (a) Define first Aid
(b) Why is it important to give first Aid to a victim? (5 points)

06.  (a) Define first Aid Kit
(b) Write the function of each of the following components of the first Aid Kit
i.     Plaster or adhesive bandage
ii.   Soap
iii.  Antiseptic
iv.   Cotton wool
v.     Petroleum jelly

07.  Write the first Aid procedure for a victim of suffocation.



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