Font size
WorksheetsQuiz. Physics & Chem
Total questions: 19
Worksheet time: 13mins
SI unit for Length is
m
cm
m2
m/s
Which of these devices measure length?
Rule
cm meter
cotton wool
micrometer screw gauge
SI unit for measuring time is
Minutes
Hours
Seconds
stopwatch
which type of time measuring device and/or method is most accurate?
digital clock
analogue stopwatch
finding the average of multiple readings taken from a digital clock
finding the average of multiple readings taken from a digital stopwatch
Speed is the rate of change of
Displacement
Velocity
Distance
Time
The formula for velocity is
distance / time
speed x time
velocity / distance
displacement / time
acceleration is measured in
m/s
km/h
ms2
m/s2
Formula for acceleration is
(u-v) / t
d / t
(v-u) / t
m/s
In a distance-time graph, the line shows
speed at a given point
acceleration at a given point
Time at a given point
average distance
In absense of air resistance, two objects of different mass will fall at
same speed
same acceleration
same velocity
same distance
Terminal Velocity is when
Gravity = air resistance
Weight = air resistance
weight = gravity
air resistance = mass
The approximate gravitational field strength near earth is
10 m/s
10 s
10 m/s2
10 m3
1 mole of any gas at room temperature and pressure will occupy
24 cm3
24000 dm3
24 m2
24 dm3
The formula for number of moles of gas at r.t.p is
volume of gas / 24000 dm3
moles x 24000
volume of gas / 24 dm3
moles / 24000 cm3
To calculate the moles of solids and liquids, we use formula
moles = Mass x Mr
Moles = Mr / Mass
Moles = Mass / Mr
Mass = Moles x Mr
To calculate the moles of an element, we use
Mr
Ar
Concentration is measured in
mol/cm3
g/dm3
mol/dm3
g/cm3
The avogadro constant is
the number of atoms or molecules in a dm3
6.012x1022
the number of atoms or molecules in a mole
6.023x1023
50cm3 of 2mol/dm3 H2SO4 React completely with NaOH. Calculate the moles of NaOH that reacted. The balanced equation is given below
2NaOH + H2SO4 → Na2SO4 + 2H2O
0.5 moles
0.1 mole
0.2 moles
2 moles
