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Worksheets2019 Higher Chemistry Multiple choice
Total questions: 25
Worksheet time: 25mins
Hydrogen will form a non-polar covalent bond with an element that has an electronegativity value of
0.9
1.5
2.2
2.5
Which of the following is a polar molecule?
CCl4
NH3
CO2
CH4
Which of the following is most likely to act as a reducing agent?
CO
MnO4-
H2O2
Cr2O72-
The following reactions take place when nitric acid is added to zinc.
NO3-(aq) + 4H+(aq) + 3e- → NO(g) + 2H2O(ℓ)
Zn(s) → Zn2+(aq) + 2e-
How many moles of Zn(s) are oxidised by one mole of NO3 - (aq)?
0.67
1.0
1.5
2.0
Which of the following compounds is a tertiary alcohol?
2,2-dimethylpropan-1-ol
2-methylbutan-2-ol
pentan-3-ol
3-methylbutan-2-ol
Molecule X has the structure shown in the image.
Which of the following could be produced by partial hydrolysis of X?
A compound with molecular formula C6H12O2 could be?
pentyl ethanoate
hexan-2-one
3-methylpentan-2-ol
hexanoic acid.
Compound X reacted with hot copper(II) oxide and the resulting product did not give a colour change when heated with Fehling’s solution.
Compound X could be:
pentan-1-ol
pentan-2-ol
pentan-3-one
pentanoic acid.
The structure of pivalic acid is shown.
Which of the following is the correct systematic name of pivalic acid?
pentanoic acid
2,2,2-trimethylethanoic acid
2-ethylpropanoic acid
2,2-dimethylpropanoic acid
The table shows four compounds that contribute to the aroma of spices.
Which compound is not derived from a terpene?
Which reaction can be classified as reduction?
methanol → methanoic acid
propanal → propanoic acid
butan-2-one → butan-2-ol
propan-2-ol → propanone
A secondary amine has two carbon atoms directly bonded to the nitrogen atom.
Which of the following is a secondary amine?
The number of moles of ions in 1 mol of copper(II) phosphate is
1
2
3
5
Which of the following gas samples has the same volume as 4·0 g of methane, CH4?
(All volumes are measured at the same temperature and pressure.)
1·0 g of helium
1·0 g of hydrogen
3·5 g of nitrogen
35·5 g of chlorine
Magnesium carbonate reacts with nitric acid.
MgCO3(s) + 2HNO3(aq) → Mg(NO3)2(aq) + H2O(ℓ) + CO2(g)
0·05 mol of magnesium carbonate was added to a solution containing 0·06 mol of nitric acid. Which of the following statements is true?
0·05 mol of carbon dioxide is produced
0·06 mol of magnesium nitrate is produced
Magnesium carbonate is in excess by 0·02 mol
Nitric acid is in excess by 0·01 mol
In which of the following diagrams does the dotted line represent a permanent dipole-permanent dipole interaction between propanone molecules?
Iron can be produced from iron(III) oxide.
2Fe2O3(s) + 3C(s) → 4Fe(s) + 3CO2(g)
The atom economy for the production of iron is
69.9%
62.8%
58.2%
32.5%
100 cm3 of propane is mixed with 600 cm3 of oxygen and the mixture is ignited.
C3H8(g) + 5O2(g) → 3CO2(g) + 4H2O(ℓ)
At the end of the reaction, the total volume of gas would be
300cm3
400cm3
700cm3
800cm3
A two-step reaction is shown below.
A → step 1→ B → step 2 → C
The first step gave a yield of 60% and the second step a yield of 90%. The overall yield would be
30%
54%
67%
150%
The volume of hydrogen gas given off against time when an excess of zinc lumps is added to 100 cm3 of 1 mol l-1 hydrochloric acid is shown.
Which of the following graphs would show the volume of hydrogen gas given off when an excess of zinc powder was added to 50 cm3 of 1 mol l -1 hydrochloric acid?
Consider the reaction pathway shown.
b = a - c - d
b = a + c + d
b = d - c + a
b = d + c - a.
Which of the following is not a factor that affects the rate of a reaction?
Activation energy
Kinetic energies of reactant molecules
Concentration of reactants
Enthalpy change of reaction
In which of the following reactions would the yield of product be increased by lowering the pressure? (↔ can be thought of as an equilibrium arrow for this question only)
H2(g) + I2(g) ↔ 2HI(g)
N2(g) + 3H2(g) ↔ 2NH3(g)
N2O4(g) ↔ 2NO2(g)
CO(g) + 2H2(g) ↔ CH3OH(g)
The graph shows the distribution of kinetic energies for a reaction involving two gases.
Which graph would show the effect of increasing temperature?
Alkenes react with ozone, O3, to form ozonides which can be decomposed to give carbonyl compounds.
Which of the following alkenes would produce a mixture of ethanal and propanone?
