STD VII SCIENCE ONLINE SELF NECTA TEST FOR YEAR 2013
THE UNITED REPUBLIC OF TANZANIA NATIONAL EXAMINATIONS COUNCIL PRIMARY SCHOOL LEAVING EXAMINATION
05E SCIENCE
Time: 1:30 Hours Wednesday, 11th September 2013 a.m.
Instructions
This paper consists of fifty (50) questions.
Answer all the questions.
Read all the given instructions in the special answer sheet (OMR)and fill in all therequired information.
Write your Examination Number and then shade the digitsof the number in the respective place in your answer sheet.
Shade the letter of the correct answer for each question in the answer sheet provided, forexample, if the correct answer is A shade as follows:
If you have to change your answer, you must rub out the shading very neatly beforeshading the new one. Use a clean rubber.
Use HE pencil only.
Cellular phones are not allowed in the examination room.
Choose the correct answer andshade its letter beside each question in the answer sheetprovided.
1. Which among the following body parts are responsible for excreting waste products?
Skin and kidney
Stomach and kidney
Pancreas and liver
Liver and gland
Lungs and heart.
Choose Answer
2. Which of the following is a classification of animals with back bone?
Snails, lizard and monitor lizard
Tick, grasshopper and tsetse fly
Toad, crocodile and ants
Hen, bat and duck
Snake, grasshopper and goat.
Choose Answer
3. If rivers and dams get dry, which of the following living things will be mostly affected?
Frogs
Fish
Crocodiles
Mosquitoes
Snakes.
Choose Answer
4. is a dicotyledonous plant.
Sugarcane
Maize
Rice
Millet
Groundnut.
Choose Answer
5. Which part of the flower receives the male gametes?
Stigma
Style
Testa
Ovule
Petal.
Choose Answer
6. The relationship between living things and non living things in the environment is called
interdependence
food web
ecology
food chain
balance of nature.
Choose Answer
7. Which of the following living things use chlorophyll to manufacture their food?
Insects
Plants
Animals
Viruses
Birds.
Choose Answer
8. The gland responsible for controlling body growth and protecting the body against diseases is called
Pancreas
Adrenaline
Pituitary
Thyroid
Gonad.
Choose Answer
9.Animals which are adapted to living in water and terrestrial environment belong to a group of
birds
amphibians
reptiles
fish
mammals.
Choose Answer
10. Clean and safe water refers to water which
has no color
is cooled in the pot
is obtained from the tap
is obtained from the well
has been boiled and filtered.
Choose Answer
11. Cholera is a dangerous disease to human beings because
it is spread by air
it occurs during rainy season only
it makes the body lose a lot of water
it has no cure and cannot be prevented
its real cause is not known.
Choose Answer
12. A standard six student breath air into a test tube containing a clear solution, then he/she shook the test tube. After shaking the test tube, the colour of the solution became white.Which chemical was in the clear solution?
Hydrochloric acid
Sulphur
Sulphuric acid
Hydrogen
Calcium hydroxide.
Choose Answer
12. A standard six student breath air into a test tube containing a clear solution, then he/she shook the test tube. After shaking the test tube, the colour of the solution became white.Which chemical was in the clear solution?
Hydrochloric acid
Sulphur
Sulphuric acid
Hydrogen
Calcium hydroxide.
Choose Answer
14. What is the function of haemoglobin in the red blood cells?
To fight against bacteria
To transport oxygen in the body
To transport body waste products
To carry digestive enzymes
To distribute information in the body.
Choose Answer
15. For the proper growth of bones and teeth, the child requires
calcium, sodium and iron
starch, fats and protein
vitamin A, starch and fruits
vitamin A, calcium and phosphorus
eggs, fruits and starch.
Choose Answer
16. The disease caused by bacteria known as bacilli which attacks human lungs is known as
whooping cough
measles
bilharzias
poliomyelitis
tuberculosis.
Choose Answer
17. Which of the following are communicable diseases?
Measles, poliomyelitis and whooping cough
Tuberculosis, diabetes and cancer
Measles, elephantiasis and AIDS
Whooping cough, asthma and severe cough
Measles, malaria and diabetes.
Choose Answer
18. The chemical used to identify the presence of starch is known as
base
acid
spirit
iodine
salt.
Choose Answer
19. Although animals inhale oxygen and exhale carbon dioxide, neither oxygen decrease norcarbon dioxide increase is significantly felt in the atmosphere because
there is plenty of oxygen in the atmosphere
carbon dioxide is changed into oxygen
plants use carbon dioxide and release oxygen
carbon dioxide affects ozone layer
oxygen and carbon dioxide are regulated by ozone.
Choose Answer
20. What is the importance of food substances rich in fats in the body?
To build thebody
To protect the body
To prevent diseases
To provide energy to the body
To provide heat to the body.
Choose Answer
21. Foods which cause the growth of animal bodies are called
carbohydrates
proteins
vitamins
fats
minerals.
Choose Answer
22. What is the objective of having first aid?
To lower treatment expenses
To save lives of sick people
To reduce the number of medical doctors.
To show mastery of treatment skills
To simplify treatment
Choose Answer
23. Which of the following first aid is given to a person with muscle pull?
To do physical exercises
To take a bed rest
To wrap the muscle with a bandage
To take pain killers
To massage the muscle slowly.
Choose Answer
24. A person who is suffering from diarrhea and vomiting looses
water and blood
sugar and salt
water and salt
salt and protein
salt and blood.
Choose Answer
25.The following instrument is not essential in the first aid kit.
Razor blade
Thermometer
Scissors
Spoon
Forceps.
Choose Answer
26.Which of the following diseases can be prevented by vaccination?
Tetanus and malaria
Elephantiasis and leprosy
Tetanus and rabies
Malaria and tuberculosis
Cholera and leprosy.
Choose Answer
27. Swollen legs, eating too much but always feeling hungry are symptoms of
typhoid
elephantiasis
kwashiorkor
worms
diabetes.
Choose Answer
28.Jack, screw, pair of scissors and chisel are types of simple machines known as
Complex
Levers
Axle
Roller
Pulley.
Choose Answer
29.Observe the following balanced chemical equation and answer the question that follows:
Base + Acid Y + Water
Which chemical is represented by letter Y?
Alkali
Oxygen
Carbonate
Salt
Hydrogen.
Choose Answer
30. Which among the following actions lead to formation of new matter?
Melting of ice
Filtration of dirty water
Evaporation of water
Dissolution of sugar
Fermentation of milk.
Choose Answer
31. What are the consequences of not protecting water sources?
Death of animals and plants
The nation will lose its manpower
Fish breeding areas will disappear
Seasonal rains will decrease
Irrigation trenches will not be used.
Choose Answer
32. The process of transporting dissolved salts in plants is known as
absorption
sucking
diffusion
osmosis
photosynthesis.
Choose Answer
33. The compound formed when two atoms of hydrogen chemically combine with one atomof oxygen is
salt
acid
water
base
gas.
Choose Answer
34. The gas which supports combustion is
oxygen
nitrogen
hydrogen
ozone
carbon dioxide.
Choose Answer
35. The type of water which turn its color to milky when mixed with soap is known as
light water
dirty water
soft water
heavy water
hard water.
Choose Answer
36. Echo refers to sound which is
refracted
absorbed
heard
reflected
recorded.
Choose Answer
37. Why is the voice of radio and television broadcasters not heard outside the broadcasting rooms through the walls?
The walls are painted with sound absorbers
The walls are constructed with sound absorbers
The walls are painted with sound reflectors
The walls reflect absorbed sound
The walls refract sound.
Choose Answer
38. The amount of current in an electric circuit is measured by
rectifier
resistor
transformer
voltmeter
ammeter.
Choose Answer
39. Figure 1 represents the action of magnetization
If the north pole of the magnet (N) is used to magnetize X pole of an iron bar which has poles X--Y, what will be the magnetic pole of Y in the iron bar?
South
East
North
West
Central.
Choose Answer
40. Which of the following colors is capable of reflecting light rays but not absorbing them?
Black
White
Yellow
Blue
Green.
Choose Answer
41.Which class of levers does the rope and hook in a fishing device belong?
Second
First
Fifth
Fourth
Third.
Choose Answer
42. Study the electric circuit in Figure 2 and answer the question that follows.
The type of circuit shown in Figure 2 is known as
series circuit
parallel circuit
resistance circuit
step down circuit
alternating circuit.
Choose Answer
43.A farmer discovered that his hoe made of iron got rust. This is due to the hoe being in contact with
water and oxygen gas
water and carbon dioxide gas
oil and oxygen gas
soil and oxygen gas
soil and carbon dioxide gas.
Choose Answer
44. A person with HIV can be identified by
appearance
attendance in the hospital
his behavior
coughing habit
blood screening.
Choose Answer
45. HIV/AIDS patient needs special diet in order to
recover quickly
avoid the spread of HIV to people
have energy for working
make the body fight diseases
destroy HIV totally.
Choose Answer
46. Marasmus is a disease which is caused by lack of
balanced diet
protein
vitamin
minerals
fats.
Choose Answer
47. One of the symptoms of AIDS is
rapid decrease of body weight
irritation of the pubic parts
enlargement of legs and stomach
to lose ability to see
being angry.
Choose Answer
48. Which stage in the scientific investigation is used to accept or reject the hypothesis?
Data collection
Conducting experiment
Writing conclusion
Data interpretation
Literature review.
Choose Answer
49. The function of red blood cells in human body is
to cause blood clotting
to fight against diseases
to attack bacteria
to transport nutrients
to transport oxygen.
Choose Answer
50. Observe Figure 3 which shows a simple blood circulation in the human body and answer the question that follows.
Letters which represent blood vessels that transport deoxygenated blood are