OCR Combined Science B Papers 4 and 8 Automock

#1. Which of the following is a disadvantage of tidal energy generation?

the tides are predictable

salt-water is corrosive

there is not enough energy in the tides to produce electricity

#2. Conventional current goes from:

Positive terminal to negative terminal

Negative terminal to positive terminal

#3. Do radio waves have longer wavelengths than microwaves?

No

Yes

#4. What is stroke volume measured in?

litres

centimetres

kilograms

millilitres

#5. What is the part of the heart that the arrows are pointing to?

The aorta

The coronary artery

The pulmonary vein

The coronary vein

The inferior vena cava

#6. What is the role of amylase?

breaks down hydrogen peroxide made during cell reactions

breaks down fats in the diet

synthesises starch from glucose

synthesises glycogen from glucose

breaks down proteins in the diet

breaks down starch to small sugars such as maltose

synthesises DNA from its monomers

#7. Which of these substances is sometimes added to water to make it potable?

chlorine

lead

ice

hydrogen

#8. Is this statement correct? When measuring momentum, if two objects are travelling in opposite directions, one object will be given a negative momentum (e.g. – 250 kg m/s).

No

Yes

$fractional distillation diagram$

#9. This image shows the apparatus used during fractional distillation. What is function of the fractionating column?

contains glass rods - is the same temperature throughout - only the desired liquid will reach the condenser

contains glass rods - is hotter at bottom than top - only the desired liquid will reach the condenser

contains glass rods - is hotter at top than bottom - only the desired liquid will reach the condenser

#10. What is the chemical symbol for phosphorus?

#11. What is Newton’s Third Law of Motion?

every action has an equal and opposite reaction

F = MA

objects in motion stay in motion and objects at rest stay at rest

#12. What is the process by which organisms remove waste from their bodies?

#13. Which of the following are ways that a magnetic field of an electromagnet can be made stronger?

Select all that apply:

Reversing the direction of the current

Placing an iron core inside the coil of wires

Increasing the current flowing through the electromagnet

#14. What is this Sankey Diagram showing?

What the ideal energy transfer looks like for a particular system

Inputs and outputs of energy and their forms, e.g. thermal energy

How internal combustion engines work

#15. What is the name of the force that holds together ions in ionic compounds?

weak nuclear force

electrostatic force

gravity

strong nuclear force

#16. What is the chemical symbol for iodine?

#17. Is this statement true or false? As potential difference increases, the current across a component increases?

True

False

#18. Which description best describes a compound?

contains only one type of atom

contains more than one type of atoms, but not chemically bonded together

contains more than one type of atoms, chemically bonded together

#19. What are negative ions called?

#20. Which of these are examples of blood vessels?

Select all that apply:

Ventricles

Capillaries

Arteries

Veins

#21. What do group one atoms do when they bond ionically with group 7 atoms?

gain two electrons

gain one electron

lose one electron

lose two electrons

#22. In longitudinal waves are the vibrations parallel or at right angles to the direction of wave travel?

right angles

parallel

#23. What is the electronic configuration of a nitrogen atom? ? you might need a periodic table to answer this question

2,5

2,7

2,8,5

#24. Which of the following features are found in veins?

Thin flexible walls

Wide lumen (inside diameter of tube)

One cell thick walls

Thick elastic walls made from muscle fibres

Narrow lumen (inside diameter of tube)

#25. What are positive ions called?

anions

cations

#26. What is the formula for the polyatomic ion carbonate?

SO₃²⁻

OH⁻

CO₃²⁻

NH₄⁺

SO₄²⁻

NO₃⁻

#27. Which of the following are prokaryotes?

Select all that apply:

Plants

Fungi

Bacteria

Archaea

Animals

#28. What is the formula for calcium hydroxide?

KOH

NaOH

H₂SO₄

Ca(OH)₂

HNO₃

HCL

#29. What is potable water?

you can drink it safely

you cannot drink it safely

you can put it in a pot

#30. Calculate the momentum of a vehicle with a mass of 1500kg and a velocity of 35m/s. Add the units “kg m/s” after your answer ? momentum equation is available in the description below the quiz

#31. Reaction profiles are used to show the energy transfers during reactions. Which type of reaction is shown in this reaction profile?

Endothermic

Mesothermic

Ectothermic

Exothermic

#32. Which of these is the correct explanation for why photosynthesis is slower at lower temperatures?

At low temperatures particles are moving slowly and collide less often. These collisions are necessary for reactions to take place, such as photosynthesis.

At low temperatures particles exert a very slight repulsive force against each other, preventing the necessary reactions for photosynthesis.

At low temperatures particles are unable to react because they each need to be thermally activated which happens at 23˚C.

#33. After paper chromatography has been carried out, the paper is known as?

a chromatogram

a wet piece of paper

a still

#34. Most ionic bonds are formed between which groups?

metals and non-metals

metals and metals

non-metals and non-metals

#35. What temperature is the boiling point of water?

#36. No refraction takes place if a wave is travelling along which line?

#37. The diagram shows a solenoid. Why is the magnetic field stronger along the centre of the coil than on the outside? ? Select two answers

Select all that apply:

The fields cancel out to give a weaker field on the outside

The fields add together in the centre and become nearly uniform and strong

The fields on the inside are stronger due to the nanoelectric effects of electromagnetic induction

The fields of the outside are weaker due to the greater potential difference at the centre of the wires in the coil

#38. What is the purpose of the earth wire in a plug?

Provides an alternative (low resistance) path for the current in the case of a fault

Connects the appliance to the power supply

Provides a return path to the power supply from the appliance

#39. Is nuclear fission a fossil fuel?

yes

partially

no

#40. What is the shortest wavelength of electromagnetic radiation

gamma rays

radiowaves

infrared

visible light

x-rays

microwaves

ultraviolet light

#41. Which type of factor is soil composition?

Abiotic

Inbiotic

Sub-biotic

Biotic

#42. During electrolysis which electrode do anions and cations migrate to?

Anions to the cathode, cations to the anode

Anions to the anode, cations to the cathode

#43. What is this component?

#44. Which type of factor is pollution?

Inbiotic

Sub-biotic

Abiotic

Biotic

#45. Which of these reasons explains why temperature affects rate of reaction?

Reactant particles are unaffected by temperature, but the bonds at higher temperatures become weaker leading to an increased rate of reaction

Reactant particles at lower temperatures are struck by rapidly moving electrons, causing the reaction to happen faster

Reactant particles at higher temperatures move more quickly, collide more often and with enough energy to react

#46. Calcium nitrate contains the polyatomic ion NO₃⁻ (nitrate) and calcium. How many nitrate ions will be needed to make one molecule of calcium nitrate?

3

1

2

#47. What do group 2 atoms do when they bond with group 6 atoms?

gain two electrons

lose two neutrons

gain one proton

lose two electrons

#48. What type of substance is the air?

Select all that apply:

Compound

Mixture

Element

#49. Where does blood entering the heart through the pulmonary veins come from?

The lungs

The lower body

The brain

#50. What is the chemical symbol for calcium?

#51. Calculate the forces involved in an accident where a 1650 kg car travelling at 20 m/s hits a wall and the car comes to a stop in 0.05 seconds. Use the following equation: Force = mass x final velocity – mass x initial velocity / t (include units in your answer)

#52. A coil of wire with current flowing through it is an electromagnet. What else do we call a coil of wire?

A solenoid

A theodolite

A caliper

#53. Reaction profiles are used to show the energy transfers during reactions. Which type of reaction is shown in this reaction profile?

Exothermic

Ectothermic

Mesothermic

Endothermic

#54. Which type of factor is parasitism?

Inbiotic

Abiotic

Sub-biotic

Biotic

#55. Will endothermic reactions continue if there is no energy input?

No, even if there are still reactants

Yes, until reactants run out

#56. What is the charge of a proton?

0

-1

+1

#57. When is adrenaline released?

When you are sleeping

When you are scared or excited

After a meal

When you are relaxed

#58. Specialised cells have different compositions of sub cellular structures in order to perform their role. Why would specialised cells have lots of mitochondria?

the cells need lots of energy

the cells need to perform photosynthesis

the cells need to get instructions for growth from the mitochondria

#59. What is the chemical symbol for sodium?

#60. In an equilibrium situation – the forces between two objects are?

diverging

unequal

converging

equal

#61. Filtration and crystallisation are used to separate which types of materials?

separate soluble materials from insoluble materials

separating soluble compounds

separate different types of liquids

#62. What are cells that line structures in the body and have cilia?

ciliated epithelial cells

zygotic cells

chitinous cells

epithelial cells

#63. The force on a conductor carrying current at right angles to a magnetic field is expressed by which of the following equations?

F = magnetic flux density x current x length

F = magnetic flux density x resistance x current

F = magnetic flux density / current x length

#64. Hormones are released by a range of glands, name one gland that releases hormones. ? do not include the word "gland" or "glands"

#65. What method can we use to separate multiple types of liquids?

#66. What is an active site?

a molecule that is changed during a reaction

the diameter of the area you can see through a microscope

A specific region on an enzyme where the substrate binds and the reaction takes place

#67. In aqueous solutions such as sodium chloride solution, there will be negatively charged ions from the salt (Cl⁻) as well as hydroxide ions (OH⁻). What is the rule that determines which will be discharged at the anode.

Always the other ions and never the hydroxide

Always the hydroxide regardless of the other ions

Always the hydroxide, unless a halide (group 7) is present.

#68. Which parts of the heart and blood vessels stop blood from flowing in the wrong direction?

#69. Which factors does the angle of refraction depend on?

Select all that apply:

Angle of incidence

Angle of emergence

Change in wave speed

#70. Why is graphite softer than diamond?

Graphite is softer because the covalent bonds are weaker between atoms of carbon in graphite than in diamond

Graphite is actually harder than diamond

Graphite is arranged in sheets with weak intermolecular forces holding them together. These can easily slide, making graphite soft.

#71. What are enzymes?

the movement of particles across a membrane against the concentration gradient

proteins which act as biological catalysts

building blocks of the basic macromolecules of life

the process by which plant cells get longer/bigger

a molecule that is changed during a reaction

#72. Which device can you use to find the direction of a magnetic field?

An anemometer

A potometer

A plotting compass

#73. Calculate the overall distance travelled by the object in the graph.

#74. What is the mass number of an element?

the number of protons plus neutrons

the total number of subatomic particles in an atom

#75. Are metals usually good conductors of electricity?

Yes

No

GCSE OCR Combined Science B Papers 1 and 5

Good Luck!

Results

#1. Which of the following is a disadvantage of tidal energy generation?

#2. Conventional current goes from:

#3. Do radio waves have longer wavelengths than microwaves?

#4. What is stroke volume measured in?

#5. What is the part of the heart that the arrows are pointing to?

#6. What is the role of amylase?

#7. Which of these substances is sometimes added to water to make it potable?

#8. Is this statement correct? When measuring momentum, if two objects are travelling in opposite directions, one object will be given a negative momentum (e.g. – 250 kg m/s).

#9. This image shows the apparatus used during fractional distillation. What is function of the fractionating column?

#10. What is the chemical symbol for phosphorus?

#11. What is Newton’s Third Law of Motion?

#12. What is the process by which organisms remove waste from their bodies?

#13. Which of the following are ways that a magnetic field of an electromagnet can be made stronger?

#14. What is this Sankey Diagram showing?

#15. What is the name of the force that holds together ions in ionic compounds?

#16. What is the chemical symbol for iodine?

#17. Is this statement true or false? As potential difference increases, the current across a component increases?

#18. Which description best describes a compound?

#19. What are negative ions called?

#20. Which of these are examples of blood vessels?

#21. What do group one atoms do when they bond ionically with group 7 atoms?

#22. In longitudinal waves are the vibrations parallel or at right angles to the direction of wave travel?

#23. What is the electronic configuration of a nitrogen atom? ? you might need a periodic table to answer this question

#24. Which of the following features are found in veins?

#25. What are positive ions called?

#26. What is the formula for the polyatomic ion carbonate?

#27. Which of the following are prokaryotes?

#28. What is the formula for calcium hydroxide?

#29. What is potable water?

#30. Calculate the momentum of a vehicle with a mass of 1500kg and a velocity of 35m/s. Add the units “kg m/s” after your answer ? momentum equation is available in the description below the quiz

#31. Reaction profiles are used to show the energy transfers during reactions. Which type of reaction is shown in this reaction profile?

#32. Which of these is the correct explanation for why photosynthesis is slower at lower temperatures?

#33. After paper chromatography has been carried out, the paper is known as?

#34. Most ionic bonds are formed between which groups?

#35. What temperature is the boiling point of water?

#36. No refraction takes place if a wave is travelling along which line?

#37. The diagram shows a solenoid. Why is the magnetic field stronger along the centre of the coil than on the outside? ? Select two answers

#38. What is the purpose of the earth wire in a plug?

#39. Is nuclear fission a fossil fuel?

#40. What is the shortest wavelength of electromagnetic radiation

#41. Which type of factor is soil composition?

#42. During electrolysis which electrode do anions and cations migrate to?

#43. What is this component?

#44. Which type of factor is pollution?

#45. Which of these reasons explains why temperature affects rate of reaction?

#46. Calcium nitrate contains the polyatomic ion NO₃⁻ (nitrate) and calcium. How many nitrate ions will be needed to make one molecule of calcium nitrate?

#47. What do group 2 atoms do when they bond with group 6 atoms?

#48. What type of substance is the air?

#49. Where does blood entering the heart through the pulmonary veins come from?

#50. What is the chemical symbol for calcium?

#51. Calculate the forces involved in an accident where a 1650 kg car travelling at 20 m/s hits a wall and the car comes to a stop in 0.05 seconds. Use the following equation: Force = mass x final velocity – mass x initial velocity / t (include units in your answer)

#52. A coil of wire with current flowing through it is an electromagnet. What else do we call a coil of wire?

#53. Reaction profiles are used to show the energy transfers during reactions. Which type of reaction is shown in this reaction profile?

#54. Which type of factor is parasitism?

#55. Will endothermic reactions continue if there is no energy input?

#56. What is the charge of a proton?

#57. When is adrenaline released?

#58. Specialised cells have different compositions of sub cellular structures in order to perform their role. Why would specialised cells have lots of mitochondria?

#59. What is the chemical symbol for sodium?

#60. In an equilibrium situation – the forces between two objects are?

#61. Filtration and crystallisation are used to separate which types of materials?

#62. What are cells that line structures in the body and have cilia?

#63. The force on a conductor carrying current at right angles to a magnetic field is expressed by which of the following equations?

#64. Hormones are released by a range of glands, name one gland that releases hormones. ? do not include the word "gland" or "glands"

#65. What method can we use to separate multiple types of liquids?

#66. What is an active site?

#67. In aqueous solutions such as sodium chloride solution, there will be negatively charged ions from the salt (Cl⁻) as well as hydroxide ions (OH⁻). What is the rule that determines which will be discharged at the anode.

#68. Which parts of the heart and blood vessels stop blood from flowing in the wrong direction?

#69. Which factors does the angle of refraction depend on?

#70. Why is graphite softer than diamond?

#71. What are enzymes?

#72. Which device can you use to find the direction of a magnetic field?

#73. Calculate the overall distance travelled by the object in the graph.

#74. What is the mass number of an element?

#75. Are metals usually good conductors of electricity?

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