STD VII SCIENCE ONLINE SELF NECTA TEST FOR YEAR 2012

THE UNITED REPUBLIC OF TANZANIA NATIONAL EXAMINATIONS COUNCIL
PRIMARY SCHOOL LEAVING EXAMINATION     

05E SCIENCE

Time: 1:30 Hours Wednesday, 19th September 2012 a.m

Instructions

  1. This paper consists of fifty (50)questions.
  2. Answer allthe questions.
  3. Read all the given instructions in the special answer sheet (OMR)and fill in allthe required information.
  4. Write your Examination Numberand then shade the digitsof the number in the respective place in your answer sheet.
  5. Shadethe letter of the correct answer for each question in the answer sheet provided, for example, if the correct answer is A shade as follows:
  6. If you have to change your answer, you must rub out the shading very neatly• before shading the new one. Use a clean rubber.
  7. Use HB pencilonly.
  8. Cellular phones are not allowedin the examination room.

Choose the correct answer and shade its letterbeside each question in the answer sheet provided.

1. In order to sustain a healthy body we are supposed to

  1.  do physical exercise, eat quality food and rest
  2.  sleep for a long time, eat quality food and play
  3.  avoid tough work, do physical exercise and sleep
  4.  do physical exercise and participate in sports and games
  5.  eat well and do physical exercises all the time.
Choose Answer :


2. Which of the following is an important nutrient for a pregnant woman toget in large quantities?

  1.  Protein 
  2.  Carbohydrates
  3.  Fats
  4.  Mineral salts 
  5.  Vitamins.
Choose Answer :


3. Urinating frequently, producing large quantities of urine and frequent thirst are symptoms of which disease?

  1.  Cancer 
  2.  Diabetes mellitus 
  3.  Kwashiorkor
  4.  Whooping cough 
  5.  Anaemia.
Choose Answer :


4. Which of the following is most appropriate in helping a person who has touched a bare live electric wire and is experiencing an electric shock?

  1.  Quickly push him/her away with bare hands
  2.  Pull out the electric wire causing shock
  3.  Put off the electricity by using water
  4.  Pull him/her away by using insulated materials
  5.  Leave him/her till the power is cut off automatically.
Choose Answer :


5. _________ is a disease which if left untreated for a long time causes heart and brain problems or even death.

  1.  Chlamydia 
  2.  Gonorrhoea 
  3.  Trichomona
  4.  AIDS 
  5.  Syphilis.
Choose Answer :


6. Which of the following is nota symptom of AIDS?

  1.  Swollen lymph nodes
  2.  Loss of weight
  3.  Persistent diarrhoea
  4.  Unusual prolonged coughing
  5.  Unusual sweating during night.
Choose Answer :


7. The following are the ways of preventing hazards in the environment except

  1.  digging trenches
  2.  building houses far from volcanic mountains
  3.  having food storage
  4.  living nomadic life
  5.  maintaining cleanliness in our environment.
Choose Answer :


8. Which of the following is a mixture of different gases?

  1.  Light 
  2.  Air 
  3.  Kerosene
  4.  Carbon dioxide 
  5.  Vapour
Choose Answer :


9. Which of the following isnota cause of environmental degradation?

  1.  Burning of papers 
  2.  Industrial development
  3.  Bathing in the lake 
  4.  Use of farmyard manure
  5.  Car washing along rivers.
Choose Answer :


10. The King of the forest commanded that all animals which eat meat must be killed. What do you think will happen to the forest after many years?

  1.  Plants will grow in larger quantity
  2.  The number of insects will not change
  3.  Plants will decrease
  4.  Animals eating plants will decrease
  5.  The environment will remain in a good and attractive condition.
Choose Answer :


11. Natural forces cause one of the following changes in the environment:

  1.  Disappearance of fishes 
  2.  Earthquake
  3.  Increase of plants 
  4.  Shortage of electricity
  5.  Drying of rivers.
Choose Answer :


12. Which of the following is not the right way of maintaining soil fertility in a farm?

  1.  Crop rotation 
  2.  Growing leguminous plants
  3.  Leaving the land uncultivated 
  4.  Applying fertilizers
  5.  Growing the same crop consecutively.
Choose Answer :


13. How many major stages of growth does a frog undergo? 

  1.  One 
  2.  Seven 
  3.  Six 
  4.  Five
  5.  Eight.
Choose Answer :


14. Which of the following insects undergoes incomplete metamorphosis?

  1.  Mosquito 
  2.  Butterfly 
  3.  Housefly 
  4.  Bee 
  5.  Cockroach.
Choose Answer :


15. A rat which was kept in a cage containing a piece of meat died after two days.Why did the rat die?

  1.  Ate the rotten meat
  2.  Lacked carbon dioxide
  3.  Lacked oxygen
  4.  Lacked enough water after eating the meat
  5. Lacked light which is essential for the growth of animals.
Choose Answer :


16. Which of the following organisms is an amphibian?

  1.  Frog 
  2.  Rat 
  3.  Lizard 
  4.  Tortoise 
  5.  Chameleon.
Choose Answer :


17. Animals like crocodiles, hippopotamus and frogs live in what kind of habitat?

  1.  In the sky and on the land
  2. On the land and in water
  3.  Any kind of environment provided there is food
  4.  On the land and in caves
  5. In the forests.
Choose Answer :


18. During pollination, pollen grains move from

  1.  ovary to the ovules 
  2.  stigma to the anthers
  3.  petal to the stigma
  4.  anthers to the stigma 
  5.  sepals to the style.
Choose Answer :


19. There are two types of plant seeds known as

  1.  main cotyledon and minor cotyledon
  2.  monocotyledon and dicotyledon
  3.  dicotyledon and main stalk
  4.  seeds with roots and seeds without roots
  5.  natural seeds and wild seeds.
Choose Answer :


20. Thunderstorm light rays can be seen before hearing the sound of the thunderstorm because

  1.  light rays cannot be prevented by anything
  2. sound is absorbed by the clouds
  3.  light rays travel faster than sound waves
  4.  sound waves travel faster than light rays
  5.  clouds which produce sound travel slowly.
Choose Answer :


21. When two pieces of cloth of the same material are washed, one black and the other white in colour, the black one will dry faster than the white one because it

  1.  absorbs heat fast 
  2.  reflects light fast
  3.  absorbs moisture fast 
  4.  can withstand blowing wind
  5.  has the ability to filter water.
Choose Answer :


22. Which of the following sets represents liquids?

  1.  Air, water and copper 
  2.  Petrol, ice and nitrogen
  3.  Gold, hydrogen and mercury 
  4.  Petrol, mercury and water
  5.  Water, petrol and air.
Choose Answer :


23. Observe Figure 1 below then answer the question that follows.


This symbol in electricity represents

  1.  resistance 
  2.  dry cell 
  3.  voltmeter 
  4.  switch 
  5.  bulb.
Choose Answer :


24. An accumulator is a combination of cells connected together to produce directcurrent which is used in

  1.  bicycles, pressing iron and telephone
  2.  cars, tractors and telephones
  3.  refregirator, pressing iron and fan
  4.  bicycle, refregirator and electrical cooker
  5.  dry cell, charcoal cooker and pressing iron.
Choose Answer :


25. Study Figure 2 which shows two people, P and Q lifting loads of equal weight to the roof then answer the question that follows.

Who will lift the load more easily?

  1.  P because he is on the ground
  2.  Q because he will apply less force
  3.  Q because he is on the roof
  4.  P because there is one roller
  5.  Q because the gravitation pull is less.
Choose Answer :


26. The ability to move something from one point to another is known as 

  1.  balance 
  2.  force 
  3.  friction 
  4.  work 
  5.  gram.
Choose Answer :


27. When a pencil is placed in a glass containing water, the pencil appears bent due to the

  1.  refraction of light 
  2.  reflection of light
  3.  dispersion of light 
  4.  ability of water to pass light
  5.  density of water.
Choose Answer :


28. Milk can be processed to make which of the following products?

  1.  Cheese and soap 
  2.  Fruits and baking powder
  3.  Cheese and fruits 
  4.  Cake and butter
  5. Cheese and butter.
Choose Answer :


29. The natural sources of energy in the daily life are

  1.  fire wood, fire and water 
  2.  electricity, magnet and natural gas
  3.  fire wood, sun and wind 
  4.  fire, wind and magnet
  5.  electricity, wind and water.
Choose Answer :


30. Observe Figure 3 and select the correct answer about the experiment.

The purpose of the experiment shown in Figure 3 is to demonstrate:

  1.  Boiling drinking water 
  2.  Cooling of water
  3.  Expansion and contraction of gas 
  4.  Cooling of gas
  5.  Producing oxygen gas.
Choose Answer :


31. Which of the following is a physical change?

  1.  Fermentation of milk
  2.  Burning of papers
  3.  Water to steam 
  4.  Reaction between acid and base
  5.  Decaying of plants.
Choose Answer :


32. Careful observe figure 4 and answer the following question


The purpose of the experiment in Figure 4 is to find the

  1.  volume of a eureka can
  2.  amount of air in the eureka can
  3.  area of the stone 
  4.  circumference of the stone
  5. volume of the stone.
Choose Answer :


33. To prevent hazards causedby science and technological inventions, everynation should

  1.  cooperate with scientists
  2.  have a Ministry of Science and Technology
  3.  do away with science and technological inventions
  4.  acquire technological inventions from developed nations
  5.  formulate policies that guide the use of science and technology
Choose Answer :


34. Which of the following is used to predict the problem in scientific investigation?

  1.  data collection 
  2.  hypothesis 
  3.  data analysis
  4.  conclusion 
  5.  recommendations.
Choose Answer :


35. People who go to the moon must

  1.  carry firewood for cooking food
  2.  carry oxygen gas and food
  3.  be careful from dangerous animals
  4.  carry enough carbon dioxide gas and food
  5.  carry carbon dioxide gas and water.
Choose Answer :


36. The following measurements of heights for six plants were obtained in are search:12 cm, 16 cm, 6 cm, 20 cm, 14 cm and 10 cm. The average height was

  1.  12 cm
  2.  14 cm 
  3.  11 cm 
  4.  13 cm 
  5.  17 cm
Choose Answer :


37. The main artery is divided into smaller vessels known as

  1.  vena cava 
  2.  bronchiole 
  3.  valves 
  4.  capilaries 
  5.  veins.
Choose Answer :


38. Haemoglobin is a compound found in blood within

  1.  white blood cells 
  2.  red blood cells
  3.  blood plasma
  4.  yellow bone marrow
  5.  cells that cause blood clotting.
Choose Answer :


38. Haemoglobin is a compound found in blood within

  1.  white blood cells 
  2.  red blood cells
  3.  blood plasma
  4.  yellow bone marrow
  5.  cells that cause blood clotting.
Choose Answer :


40. Which of the following animals brain is most complex?

  1.  Man 
  2.  Horse 
  3.  Hare 
  4.  Chimpanzee 
  5.  Monkey.
Choose Answer :


41. Rust is a result of the chemical reaction:IRON + Y + WATER.Letter Y stands for

  1.  oxygen 
  2.  nitrogen 
  3.  moisture 
  4.  carbon dioxide 
  5.  acid.
Choose Answer :


42. Which of the following is made of very small particles?

  1.  Gas 
  2.  Liquids 
  3.  Blood 
  4.  Dry cell 
  5.  Matter.
Choose Answer :


43. Which of the following causes anaemia in the human body?

  1.  Lack of vitamin 
  2.  Lack of iron 
  3.  Lack of calcium
  4.  Lack of protein 
  5.  Lack of phosphate.
Choose Answer :


44. When cooking green vegetables we are advised to

  1.  add some soda ash to ensure that it is well cooked
  2.  cook for a long time to reduce amount of water in it
  3.  cover and cook for a short time
  4.  dry before cooking
  5.  fry using excessive cooking oil.
Choose Answer :


45. Which of the following is caused by excessive carbohydrates in the body?

  1.  Obesity 
  2.  Malnutrition 
  3.  Kwashiorkor
  4.  Marasmus 
  5.  Goitre.
Choose Answer :


46. In her experiment, Shida passed light ray through a plane mirror as shown in Figure 5.


The size of angle Y is

  1.  180° 
  2.  35° 
  3.  70° 
  4.  90°
  5. E 105°
Choose Answer :


47. Which of the following is caused by friction?

  1.  Heat
  2.  Things to fall 
  3.  Things to slide 
  4.  Velocity 
  5.  Force.
Choose Answer :


48. The shape of the fish helps it to

  1. breath 
  2.  swim 
  3.  hunt 
  4.  reproduce 
  5.  hide.
Choose Answer :


49. Which of the following organisms live in water?

  1.  Bacteria, virus and fungus
  2. Sardine, octupus and bacteria
  3. Bacteria, virus and octupus
  4. Sardine, octupus and water lilies
  5. E Bacteria, virus and water lilies.
Choose Answer :


50. Culex is a type of mosquito which spread worms known as filaria that cause the following disease:

  1.  Tetanus 
  2.  Elephantiasis 
  3.  Measles 
  4.  Hepatitis
  5.  Chickenpox.
Choose Answer :


Try Another Test | 
Download Learning
Hub App

For Call,Sms&WhatsApp: 255769929722 / 255754805256

   Click Here To Access You Scheme(ONLY IF YOU A HAVE CODE)
Quick Links