WorksheetsSPM Chemistry Perak Trial Set 1
Total questions: 10
Worksheet time: 12mins
A patient is diagnosed of having cancer. Which isotope is used to treat the patient?
Phosphorus-32
Carbon-14
Sodium-24
Cobalt-60
Why carbon-12 is chosen as the standard atom to determine the relative atomic mass and relative molecular mass?
Carbon has three isotopes
Carbon is a non-metal element
Carbon is solid at room temperature and can be handled easily
Which characteristic is correct about elements in Group 17 in the Periodic Table as going down the group?
The intensity of colour decreases
The tendency to accept an electron decreases
The physical state changes from liquid to gas
Force of attraction between nucleus and electron become stronger
Which of the following element forms brown coloured compound and functions as a catalyst in industry?
Iron
Carbon
Sodium
Bromine
Diagram 1 shows the ionisation equation for ammonia.
NH3 + H2O ⇌ NH4+ + OH-
Which of the following particle shows that ammonia is an alkali?
NH3
H2O
NH4+
OH-
Which salts is prepared in a laboratory by a titration method?
Magnesium nitrate
Lead(II) chloride
Sodium sulphate
Copper(II) nitrate
Sodium chloride is an ionic compound. Which of the following is correct about sodium chloride?
Dissolves in organic solvent
Has high boiling point
Cannot conduct electricity
Has high volatility
The following are the characteristics of substance needed to produce a new product in industry:
✅Function under the extremely low temperature
✅Transfer information with high speed
Ceramic
Superconductor
Fibre optic
Fibre glass
Diagram 2 shows the apparatus set-up for an experiment to electroplate an iron ring with silver. What are P, Q and R?
P: Ring
Q: Silver
R: Silver nitrate
P: Ring
Q: Silver
R: Iron (II) nitrate
P: Silver
Q: Ring
R: Silver (II) nitrate
P: Silver
Q: Ring
R: Iron (II) nitrate
Synthetic rubber is more resistant to abrasion than natural rubber. Its grease and oil resistance also makes it a popular choice for corrosive environment. A manufacturer needs to produce sealants which are very resistant against chemical solvents and oils.
Which is the most suitable synthetic rubber to produce sealants?
Thiokol
Neoprene
Silicone rubber
Styrene-butadiene rubber
