Test
Multiple Choice (science nº2)
Este test tiene tiempo límite, así que se abre en el reproductor de siempre.
Preguntas del test (25)
1Which part of a plant cell is formed from cellulose?
- Acell surface membrane
- Bcell wall
- Cchloroplasts
- Dcytoplasm
2 An experiment is set up as shown.
After several hours, the water turns blue.
Which process causes this colour change to take place?
- Aabsorption
- Bdiffusion
- Cdigestion
- Devaporation
3The enzyme catalase is found in liver cells. A cube of boiled liver and a cube of raw liver are
added to solutions of hydrogen peroxide.
Which shows the result of this experiment?- A
- B
- C
- D
- A
4Which two chemical substances are required for photosynthesis?
- Acarbon dioxide and glucose
- Bglucose and oxygen
- Coxygen and water
- Dwater and carbon dioxide
5The blockage of which blood vessel causes a heart attack?
- Aaorta
- Bcoronary artery
- Cpulmonary artery
- Dpulmonary vein
6The flow chart shows a green leaf being tested for the presence of starch.
What are substances 1, 2, 3 and 4?
- A
- B
- C
- D
- A
7The diagram shows a section through the female reproductive system.
Where is the fertilised ovum implanted?
- AA
- BB
- CC
- DD
8 A potato is cut into two portions, X and Y. Both portions produce shoots that grow into new
plants.
Which statement about the two new plants is not true?
- AThey are clones.
- BThey come from different zygotes.
- CThey contain identical genes in each cell.
- DThey have the same parent.
9The diagram shows a food web for a lake.
The diagram shows a food web for a lake.
- Amicroscopic plants → tadpoles → small fish → large fish
- Bmicroscopic plants → insect larvae → water beetles → tadpoles
- Cmicroscopic plants → water snails → diving beetles → large fish
- Dmicroscopic plants → water snails → water weed → tadpoles
10Which procedure would reduce soil erosion?
- Aallowing large numbers of sheep to graze on grassland
- Bchanging sloping farmland into terraced fields
- Ccutting down rainforests for agricultural use
- Dreducing the number of trees on hillsides
11 Which method of separation can be used to obtain pure water from aqueous potassium chloride?
- Achromatography
- Bcrystallisation
- Cdistillation
- Dfiltration
12Which diagrams correctly show the displayed formula of ammonia and of carbon dioxide?
- A
- B
- C
- D
- A
13Which metal reacts dangerously when added to dilute sulphuric acid?
- Acopper
- Bmagnesium
- Csodium
- Dzinc
14The diagram shows a razor used in shaving.
Why is the razor made of stainless steel and not pure iron?
- AIt is a compound but iron is an element.
- BIt is easier to polish than is iron.
- CIt is more brittle than iron.
- DIt is more resistant to rusting than is iron.
15Some calcium carbonate and hydrochloric acid start to react. Water is then added to the reaction
mixture.
What happens to the speed of the reaction?- AIt decreases.
- BIt increases.
- CIt stays the same.
- DIt stops.
16The apparatus shown is set up.
The crucible needs to be heated for the bulb to give out light.
Why is heat needed?
- AAn exothermic reaction takes place in the crucible.
- BElectrodes only conduct electricity when hot.
- CHeat causes the lead(II) bromide to react with air.
- DThe lead(II) bromide has to be melted.
17Why is water often used to extinguish fires?
- AThe boiling point of water is 100 °C .
- BWater is a compound containing oxygen and hydrogen.
- CWater removes heat from the fire.
- DWater reacts with most fuels.
18Some liquid is heated in a flask.
The diagrams show the height of the liquid in the tube when the liquid is cold and when it is hot.
What is the difference in the heights?
- A1.7 cm
- B2.8 cm
- C3.2 cm
- D4.5 cm
19The speed-time graph shown is for a bus travelling between stops.
Where on the graph is the acceleration of the bus the greatest?
- AA
- BB
- CC
- DD
20The circuit of a motor racing track is 3 km in length. In a race, a car goes 25 times round the
circuit in 30 minutes.
What is the average speed of the car?- A75 km / hour
- B90 km / hour
- C150 km / hour
- D750 km / hour
21The diagram shows a transformer connected to a 240 V a.c. supply.
What is the potential difference across the secondary coil of the transformer?
- A30 V
- B120 V
- C240 V
- D480 V
22There are three types of emission from radioactive substances.
Which types carry an electric charge?- Aalpha-particles and beta-particles only
- Balpha-particles and gamma-rays only
- Cbeta-particles and gamma-rays only
- Dall three types
23The device X in this circuit is designed to cut off the electricity supply if too much current flows.
What is device X?
- Aa fuse
- Ba relay
- Ca resistor
- Dan ammeter
24A heater is placed in a room.
Which diagram shows the movement of air as the room is heated?- A
- B
- C
- D
- A
25 The diagram shows an experiment to find the density of a liquid.
What is the density of the liquid?
- A
- B
- C
- D
- A
Información
- Descripción
- SCIENCE 0653/1
- Autor
- ahidalgo.maldona
- Idioma
- Español
- Visitas
- 92
- Etiquetas
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