Q1 MCQ Drill: 2020 Physical Sciences P2 (2020 NSC October/November National Examination)

Physical Sciences Past Paper Question 1 Drill Level 1: Knowledge & Recall

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6 multiple-choice questions taken verbatim from Section A of the official 2020 NSC October/November National Examination Physical Sciences Paper 2, auto-marked against the official marking guideline. Questions that rely on diagrams or graphs are excluded - see the full paper for those.

Question 1 of 6 2 Marks

Which ONE of the following is the general formula for the alkanes?

A. CnH2n

B. CnH2n-2

C. CnH2n+2

D. CnH2n+2O

Question 2 of 6 2 Marks

The EMPIRICAL FORMULA of hexanoic acid is …

A. C3H6O2

B. C6H6O2

C. C6H12O2

D. C3H6O

Question 3 of 6 2 Marks

The role of a catalyst in a chemical reaction is to increase the …

A. yield.

B. activation energy.

C. heat of reaction.

D. rate of the reaction.

Question 4 of 6 2 Marks

The conjugate base of HPO 24 ✓ is …

A. OH ✓

B. PO 34✓

C. H2PO ✓4

D. H3PO4

Question 5 of 6 2 Marks

Which ONE of the following reactions will proceed spontaneously under standard conditions?

A. Ni2+(aq) + H2(g) → Ni(s) + 2H+(aq)

B. Br2(ℓ) + 2Cℓ ✓ (aq) → 2 Br ✓ (aq) + Cℓ2(g)

C. 2Fe3+(aq) + 2I ✓ (aq) → 2Fe2+(aq) + I2(s)

D. 2Cu+(aq) + Pb2+(aq) → 2Cu2+(aq) + Pb(s)

Question 6 of 6 2 Marks

Eutrophication in water is caused by …

A. algal bloom.

B. bacterial nitrogen fixation.

C. an increase in plant nutrients.

D. a depletion of oxygen concentration.

Q1 MCQ Drill: 2020 Physical Sciences P2 (2020 NSC October/November National Examination)

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