Chemistry Year 12 Random Retrieval

This quiz contains all the questions in the year 12 chemistry section. The website will pick 10 questions at random.

1 / 10

Which of these alcohols are isomers of butan-1-ol?

(i) CH₃CH₂CHOHCH₃

(ii) (CH₃)₃COH

(iii) CH₃CH(CH₃)CH₂OH

(iv) (CH₃)₃CCH₂OH

(i), (ii) and (iii)

(i) and (iii) only

(ii) and (iv) only

(iv) alone

2 / 10

Which of the following statements describe molecules that are structural isomers?

(i) molecules whose atoms have the same arrangement in space

(ii) molecules that have the same molecular formula

(iii) molecules in which the atoms are joined to the same neighbouring atoms

(iv) molecules which the same atoms but they are bonded in a different order

(i), (ii) and (iii)

(i) and (iii) only

(ii) and (iv) only

(iv) alone

3 / 10

Choose one of the following options:

3‐fluorocyclohexanal

2‐fluorocyclohexan‐1‐one

3‐fluorohexan‐1‐one

3‐fluorocyclohexan‐1‐one

4 / 10

Which of the following increase from left to right along the series Mg - Ca - Sr - Ba?

(i) the thermal stability of the nitrates

(ii) the thermal stability of the carbonates

(iii) the solubility of the hydroxides in water

(iv) the solubility of the sulfates in water

(i), (ii) and (iii)

(i) and (iii) only

(ii) and (iv) only

(iv) alone

5 / 10

What is the electron configuration of an oxide ion?

1s22s2

1s22s22p4

1s22s22p6

1s22s22p8

6 / 10

A chloride ion and an argon atom have the same:

(i) number of protons

(ii) number of electrons

(iii) atomic number

(iv) electron configuration

(i), (ii) and (iii)

(i) and (iii) only

(ii) and (iv) only

(iv) alone

7 / 10

Which of these molecules are overall non-polar?

(i) H₂O

(ii) CO₂

(iii) SO₂

(iv) CCl₄

(i), (ii) and (iii)

(i) and (iii) only

(ii) and (iv) only

(iv) alone

8 / 10

In the family of hydrocarbons called alkanes:

(i) the boiling points of the straight chain compounds rise as the number of carbon atoms increases

(ii) the intermolecular forces arise from attractions between temporary dipoles

(iii) in any pair of isomers the compound with the more highly branched molecules has the lower boiling point

(iv) the unbranched compounds are all liquids at room temperature.

(i), (ii) and (iii)

(i) and (iii) only

(ii) and (iv) only

(iv) alone

9 / 10

Typically metal elements, unlike most solid non-metal elements:

(i) are shiny

(ii) conduct electricity

(iii) bend and stretch without breaking

(iv) have low tensile strength.

(i), (ii) and (iii)

(i) and (iii) only

(ii) and (iv) only

(iv) alone

10 / 10

Which of these conversions are reductions?

(i) CrO₄²^- to Cr₂O₇²^-

(ii) CrO₄²^- to Cr³⁺

(iii) CrO₄²^- to CrO₃

(iv) CrO₃ to Cr₂O₃

(i), (ii) and (iii)

(i) and (iii) only

(ii) and (iv) only

(iv) alone

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