WASSCE Integrated Science Mock Paper 2 Theory 001 Download
WASSCE Integrated Science Mock Paper 2 Theory 001 Download
- (a)(i) What is a mixture? [1marks]
(ii) State two properties of a mixture. [2marks]
(iii) Name a suitable method of obtaining
- Nitrogen from liquid air
- Sodium chloride from sodium chloride solution
- Water from aqueous magnesium chloride [3marks]
(b) Write the IUPAC names of each of the following compounds;
- FeS ii. H2SO4 iii. Na2CO3 iv. CO [4 marks]
(c) i. Describe the following methods of identifying farm animals.
α. Tattooing β. Tagging ϒ. Branding [3 marks]
(d) i. Name the two biological systems which help to co-ordinate the body’s activities [2 marks]
- Tabulate four differences between arteries and veins. [4 marks]
iii. State one function of the hepatic portal vein in the human body. [1 mark]
- a) (i) A body of mass 2kg drops from a height of 20m to the zero level in 2 seconds. What is the power produced? (g = 10m/s2) [3 marks]
(ii) Tabulate three differences between red blood cells and white blood cells. [3 marks]
- b) (i) State four qualities of fertile soil [2 marks]
(ii) Explain the term soil fertility. [2 marks]
- c) (i) What is meant by the term mole? [1 mark]
(ii) Calculate the number of moles present in 35.0g of iron metal (Fe = 56) [2 marks]
- d) Determine the oxidation number of the
(i) atoms underlined in each of the following compounds
(α) MnO2 (β) FeO3 (ϒ) H2SO4 (€) Cr2O7- [4 marks]
(ii) State one use of each of the following pieces of laboratory apparatus.
(α) Pipette (β) Reagent bottle (ϒ) Dessicator [3 marks]
3) Three cells each of electro-motive force 2v and negligible internal resistances are connected in series with an ammeter, two resistance, 2 ohms and 6 ohms, and a key.
(i) Draw a diagram for the above information.[ 2marks]
(ii)Calculate the current in the circuit when the key is closed. [2 marks]
(b) (i) Name the four parts of a complete flower [2marks]
(ii) State three ways in which seed dispersal is important [3marks]
(iii) What is malnutrition? [1 mark]
(c) Explain the term tillage as used in
(i) Crop production [ 2marks]
(ii) Give three advantages of tillage [3marks]
(iii) State two diseases that affect maize [2 marks]
(d) Three liquids, dilute acid solution, alkaline solution, and distilled water, were kept in unlabeled identical reagent bottles. Describe briefly a test that could be performed to identify each of the liquids.
[3 marks]- a) (i) What is colostrum? [1mark]
(ii) State three benefits a young animal derives from feeding on colostrum. [3marks]
(iii) Give two reasons for controlling weeds among crops. [2marks]
(b) (i)What is a semiconductor? [1mark]
(ii) Name three household appliances in which semiconductors are used. [3 marks]
(iii) List two methods of preventing rusting [2 marks]
(c)(i) State three differences between mitosis and meiosis [3marks]
(ii) Write the process involved in testing for reducing simple sugar [3marks]
(d) (i) What will be the value of x for the bar to remain balanced on the wedge
[2marks]
- (a) (i) What is electromagnetic wave? [1mark]
(ii) State three differences between electromagnetic waves and mechanical waves [3marks]
(iii) Give two uses of transistors. [2marks]
(b) (i) What is breathing? [1mark]
(ii) State two disorders associated with the respiratory system of humans [2marks]
(iii) What is an enzyme? [1mark]
(c)(i) Explain the following terms as applied in animal feed
α) Hay β) Silage [2marks]
(ii) What is flushing as used in animal production [1mark]
(iii) Give two reasons for castrating animals [2marks]
(d) (i) What is rusting? [1mark]
(ii) List two methods of preventing rusting [2marks]
(iii) State two factors that promote corrosion [2marks]
- (a) (i) What is hard water? [1mark]
(ii) Give two advantages of hard water [2marks]
(iii) List two groups of hydrocarbons [2marks]
(b)(i)State two characteristics of westerlies [2marks]
(ii) Explain the term artificial insemination as used in animal production [1mark]
(iii) State two advantages of artificial insemination in animal production [2marks]
(c) (i) What is discontinuous variation? [1mark]
(ii) List two examples of discontinuous variation [2marks]
(iii) State two ways through which AIDS is transmitted [2marks]
(d) (i) What is heat? [1mark]
(ii) State two effects of heat on a substance [2marks]
(iii) A student eats a bowl of rice worth 80J of energy. If the student uses 50J of the energy in running a 100m race. Calculate the efficiency of the student’s energy conversion. [2marks]
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