Question 1

Name the electrical component that only allows current to flow in one direction

Accepted Answer

diode

Answer

resistor

Answer

switch

Answer

thermister

Question 2

Name the electrical component that limits the flow of electrical current.

Accepted Answer

resistor

Answer

bulb

Answer

cell

Answer

fuse

Question 3

What is the correct unit for charge

Accepted Answer

coloumb

Answer

ohm

Answer

joule

Answer

amp

Question 4

What is the correct formula to calculate charge when you know current and time?

Accepted Answer

Q = I x T

Answer

Q = T / I

Answer

Q = I + T

Answer

Q = I / T

Question 5

State the two factors that affect a current that flows through an electrical component?

Accepted Answer

resistance and potential difference

Answer

charge and joules

Answer

resistance and work done

Answer

resistance and charge

Question 6

To correctly measure the potential difference within a circuit, how should the voltmeter be placed?

Accepted Answer

in parallel

Answer

horizontally

Answer

in series

Answer

with one wire only

Question 7

What is the equation that links potential difference, energy transferred and charge.

Accepted Answer

V = E / Q

Answer

V = E + Q

Answer

V = E - Q

Answer

V = Q / E

Question 8

Convert 650 mA to amperes

Accepted Answer

0.65 Amperes

Answer

6.5 Amperes

Answer

6500 Amperes

Answer

650 Amperes

Question 9

Which model of the atom can be described as a sphere of positive charge with negative electrons embedded in it?

Accepted Answer

Thompson’s Plum Pudding Model

Answer

Bohr’s Model

Answer

Dalton’s Model

Answer

Rutherford’s Nuclear Model

Question 10

What are the vertical columns on the periodic table known as?

Accepted Answer

Groups. The elements are similar, but show a gradual trend in chemical properties up or down the column.

Answer

Groups. The elements in a group are all very different from each other.

Answer

Periods. The elements in a period are all very different from each other

Answer

Periods. The elements are similar, but show a gradual trend in chemical properties up or down the column.

Question 11

Why did Mendeleev leave gaps in his early periodic table?

Accepted Answer

To preserve the periodic pattern

Answer

Because he did not know their atomic number

Answer

For elements that hadn’t yet been discovered

Answer

Because some elements were not available in Russia at that time

Question 12

What would be the correct state symbol for sugar dissolved in water?

Accepted Answer

aq

Answer

l

Answer

g

Answer

s

Question 13

What is an alloy, and why are alloys stronger than pure metals

Accepted Answer

An alloy is a mixture. Different-sized atoms disrupt the layer structure of the pure element, making it harder for layers to slide over each other.

Answer

An alloy is a compound. Different-sized atoms disrupt the layer structure of the pure element, making it harder for layers to slide over each other.

Answer

An alloy is a compound. Different-sized atoms share electrons, making it harder than a pure metal.

Answer

An alloy is a mixture. Different-sized atoms share electrons, making it harder than a pure metal.

Question 14

How can a reactive metal, such as Aluminium, be extracted from its ore?

Accepted Answer

Electrolysis, because aluminium is above carbon in the reactivity series

Answer

Electrolysis, because aluminium is below carbon in the reactivity series

Answer

Reduction with carbon, because aluminium is below carbon in the reactivity series

Answer

Reduction with carbon, because aluminium is above carbon in the reactivity series

Question 15

Atoms of the same element, with the same number of protons, but a different number of neutrons, are called

Accepted Answer

Isotopes

Answer

Ions

Answer

Allotropes

Answer

Hydrocarbons

Question 16

Magnesium - a group 2 metal - forms what ion when it reacts?

Accepted Answer

2+ because it loses two electrons

Answer

1+ because it loses an electron

Answer

2+ because it gains two electrons

Answer

2- because it loses two electrons

Question 17

The elements of Group 8 are:

Accepted Answer

Very unreactive, because their atoms have a full outer shell of electrons

Answer

Very reactive, because their atoms have a full outer shell of electrons

Answer

Very reactive, because they are Noble gases

Answer

Very unreactive, because they are Noble gases

Question 18

What are the products of the reaction between sodium and water?

Accepted Answer

Sodium hydroxide and hydrogen

Answer

Sodium does not react with water

Answer

Sodium oxide and carbon dioxide

Answer

Sodium oxide and hydrogen

Question 19

The equations of a vertical line is of the form

Accepted Answer

x = k

Answer

y = k

Answer

ax + by = c

Answer

y = mx + c

Question 20

In the line equation y = mx +c the parameter m represents the...

Accepted Answer

gradient

Answer

curvature

Answer

x-axis intercept

Answer

y-axis intercept

Question 21

The solutions of a quadratic equation of the form ax^2 + b x + c = 0 are found

Accepted Answer

Where the graph crosses the x-axis

Answer

Where the graph crosses y=x

Answer

Where the graph crosses the y-axis

Answer

Where the graph crosses x = 0

Question 22

Pythagoras' theorem allows us to relate the lengths of the sides of a right angled triangle in the following way where a and b are the lenghs of the short sides and c is the hypotenuse.

Accepted Answer

a^2 + b^2 = c^2

Answer

a^2 - b^2 = c^2

Answer

a^2 + c^2 = b^2

Answer

a^3 + b^3 = c^3

Question 23

A sector of a circle is

Accepted Answer

The area bounded between two radii and the circumference

Answer

The area bounded between a chord and the circumference

Answer

he length along the circumference between two points of a circle.

Answer

A line joining two points on the circumference of a circle.

Question 24

Calculating an area must include

Accepted Answer

Multiplying two perpendicular lengths together

Answer

Multiplying three perpendicular lengths together.

Answer

Adding the lengths around the edge of a shape

Answer

Multiplying all the numbers you see

Question 25

The  ≈ symbol means

Accepted Answer

Two things are aproximately equal

Answer

Two things are equal

Answer

Two things are identical

Answer

Two things are not equal

Question 26

The area of a circle is found by the formula

Accepted Answer

A=𝝅r^2

Answer

A=2𝝅r

Answer

A=4𝝅r^3

Answer

A=𝝅d

Question 27

What type of programming language is Python?

Accepted Answer

High level

Answer

Assembly level

Answer

Machine level

Answer

Low level

Question 28

What does a variable do in a program?

Accepted Answer

Stores a value that can be changed during execution.

Answer

Manages memory allocation.

Answer

Defines a function in the program.

Answer

Executes a specific function.

Question 29

Which of the following best describes a list in Python?

Accepted Answer

A collection of items that can be of different types.

Answer

A fixed collection of items that cannot be changed.

Answer

A data structure that only stores integers.

Answer

A function to return the length of a string.

Question 30

What is the index of the first item in a Python list?

Accepted Answer

0

Answer

-1

Answer

10

Answer

1

Question 31

Which statement about IF statements in Python is true?

Accepted Answer

An IF statement lets you choose between different branches of code based on a condition.

Answer

An IF statement can only check if a value is equal to another value.

Answer

An IF statement executes a function repeatedly.

Answer

An IF statement always runs all parts of the code.

Question 32

What does the print(<item>) statement do in Python?

Accepted Answer

Displays the value of <item> on the screen.

Answer

Takes user input for <item>.

Answer

Returns <item> from a function.

Answer

Sets the value of <item> in memory.

Question 33

Is input and example of a function of a procedure

Accepted Answer

Function

Answer

Procedure

Question 34

What does input(<prompt>) do in Python?

Accepted Answer

Displays a prompt and returns the user's input as a string.

Answer

Returns a random number.

Answer

Sets the value of <prompt>.

Answer

Defines a variable with the name <prompt>.

Question 35

Which of these Python statements will give you the length of a string?

Accepted Answer

len(<string>)

Answer

length(<string>)

Answer

size(<string>)

Answer

count(<string>)

Question 36

Which of the following is true about a low-level programming language?

Accepted Answer

It allows more control over the computer’s hardware.

Answer

It is designed to be easy for humans to read and write.

Answer

t does not require writing in assembly language.

Answer

It is the same as a high-level language.

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