BTEC APPLIED SCIENCE UNIT 15 C AND D Exam
review NEWEST WITH ACTUAL QUESTIONS AND
CORRECT VERIFIED ANSWERS (100%
GUARANTEED PASS!!!)
What is the word equation for combustion? - __100%
correct answer as Fuel + Oxygen -> Carbon
dioxide + Water
(+ heat energy)
What is flammability? - __100% correct answer
as It is one of the most useful properties of fuels as
itshow easily they catch fire. This can be a hazard
and should be treated like it.
What is toxicity? - __100% correct answer as
Fuels can carry impurities that are toxic.
What does sulfur dioxide react with to produce acid
rain? - __100% correct answer as They react
with moisture in the air.
What does acid rain do? - __100% correct
answer as It erodes limestone buildings and
,statues. It acidifies lakes and rivers. It kills aquatic
plants and animals.
What happens if there is limited oxygen in
combustion? - __100% correct answer as
Incomplete combustion occurs which can produce
carbon monoxide and soot.
What is the wordequation for incomplete
combustion? - __100% correct answer as Fuel +
Oxygen -> carbon monoxide + water (+ Heat
energy)
What is carbon monxide? - __100% correct
answer as It is a poisonous gas and can cause
headaches, dizziness, nausea and death.
What is the word equation for soot? - __100%
correct answer as CH4 + O2 -> C =+ 2H2O
What units is energy measured in? - __100%
correct answer as They can be measured in
different units, Mainly joules.
,What is specific heat capacity of water? - __100%
correct answer as When 4.2 joules of energy to
raise the temperature of 1g of water by 1 degree c.
Converting units - __100% correct answer as 1
kilojoule (KJ) = 1000 Joules (J)
1 kilometer (KM) = 1000 Meters (m)
1 Kilogram (KG) = 1000 grams (g)
1 kilocalorie (Kcal) = 1000 calories (cal)
How can you investigate the energy in food or fuel? -
__100% correct answer as You can investigate
the energy in food or fuel by burning the food or fuel
under a certain volume of water using a calorimeter.
What is the equation for Heat energy? - __100%
correct answer as Heat energy (J) = Mass of
water (g) X specific heat capacity of water (Jg-1C-1)
How can energy be calculated? - __100% correct
answer as Heat of combustion (kJ mol-1)= ((heat
energy to water (kJ) x relative molecuar mass of
fuel)) / Mass of fuel burnt (g)
What is a battery in a circuit? - __100% correct
answer as Made up of more than one cell.
, What is an ammeter in a circuit? - __100% correct
answer as It measures current that flows through a
component in a circuit. It is placed in series with the
component
What is a voltmeter in a cirucit? - __100% correct
answer as It measures the voltage across a
component in a circuit. It is placed in parallel with the
component
Bulb in a circuit - __100% correct answer as
What is a resistor? - __100% correct answer as
It controls the current in a circuit.
What is a variable resistor? - __100% correct
answer as It is used to change the current in a
circuit. It goes in series in the circuit
What is a diode? - __100% correct answer as It
only allows current to flow one way through a circuit.
It is in series in the circuit
review NEWEST WITH ACTUAL QUESTIONS AND
CORRECT VERIFIED ANSWERS (100%
GUARANTEED PASS!!!)
What is the word equation for combustion? - __100%
correct answer as Fuel + Oxygen -> Carbon
dioxide + Water
(+ heat energy)
What is flammability? - __100% correct answer
as It is one of the most useful properties of fuels as
itshow easily they catch fire. This can be a hazard
and should be treated like it.
What is toxicity? - __100% correct answer as
Fuels can carry impurities that are toxic.
What does sulfur dioxide react with to produce acid
rain? - __100% correct answer as They react
with moisture in the air.
What does acid rain do? - __100% correct
answer as It erodes limestone buildings and
,statues. It acidifies lakes and rivers. It kills aquatic
plants and animals.
What happens if there is limited oxygen in
combustion? - __100% correct answer as
Incomplete combustion occurs which can produce
carbon monoxide and soot.
What is the wordequation for incomplete
combustion? - __100% correct answer as Fuel +
Oxygen -> carbon monoxide + water (+ Heat
energy)
What is carbon monxide? - __100% correct
answer as It is a poisonous gas and can cause
headaches, dizziness, nausea and death.
What is the word equation for soot? - __100%
correct answer as CH4 + O2 -> C =+ 2H2O
What units is energy measured in? - __100%
correct answer as They can be measured in
different units, Mainly joules.
,What is specific heat capacity of water? - __100%
correct answer as When 4.2 joules of energy to
raise the temperature of 1g of water by 1 degree c.
Converting units - __100% correct answer as 1
kilojoule (KJ) = 1000 Joules (J)
1 kilometer (KM) = 1000 Meters (m)
1 Kilogram (KG) = 1000 grams (g)
1 kilocalorie (Kcal) = 1000 calories (cal)
How can you investigate the energy in food or fuel? -
__100% correct answer as You can investigate
the energy in food or fuel by burning the food or fuel
under a certain volume of water using a calorimeter.
What is the equation for Heat energy? - __100%
correct answer as Heat energy (J) = Mass of
water (g) X specific heat capacity of water (Jg-1C-1)
How can energy be calculated? - __100% correct
answer as Heat of combustion (kJ mol-1)= ((heat
energy to water (kJ) x relative molecuar mass of
fuel)) / Mass of fuel burnt (g)
What is a battery in a circuit? - __100% correct
answer as Made up of more than one cell.
, What is an ammeter in a circuit? - __100% correct
answer as It measures current that flows through a
component in a circuit. It is placed in series with the
component
What is a voltmeter in a cirucit? - __100% correct
answer as It measures the voltage across a
component in a circuit. It is placed in parallel with the
component
Bulb in a circuit - __100% correct answer as
What is a resistor? - __100% correct answer as
It controls the current in a circuit.
What is a variable resistor? - __100% correct
answer as It is used to change the current in a
circuit. It goes in series in the circuit
What is a diode? - __100% correct answer as It
only allows current to flow one way through a circuit.
It is in series in the circuit
