Chemistry Year 12 Random Retrieval

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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

Adding a compound X, C4H10O, drop by drop to a hot acidic solution of potassium dichromate(VI) and allowing the product to distil off as it forms, produces a compound which gives a silver mirror with Tollens solution. This shows that X could be:

(i) CH3CH2CH2CH2OH

(ii)CH3CH2CHOHCH3

(iii)CH3CH(CH3)CH2OH

(iv) CH3CH2OCH2CH3

2 / 10

3 / 10

In the periodic table a periodic pattern is:

4 / 10

Calculate the volume of oxygen gas formed on strongly heating 3.40 g sodium nitrate which decomposes according to this equation:

2NaNO3(s) -> 2NaNO2(s) + O2(g)

Assume that the volume of 1 mol of any gas is 24 000 cm3 under the conditions of the experiment.

5 / 10

6 / 10

An element M has two electrons in its outer shell. An element X has seven electrons in its outer shell. What is the likely formula of the compound of X and Y?

7 / 10

Which of these molecules are overall non-polar?

(i) H2O

(ii) CO2

(iii) SO2

(iv) CCl4

8 / 10

Which of these elements has a relatively low boiling point (below 500 oC)?

9 / 10

Which of these compounds dissolve in water and react to form a solution containing hydroxide ions:

(i) sodium oxide

(ii) ammonium chloride

(iii) ammonia

(iv) sodium chloride

10 / 10

In the half equation: MnO4- (aq) + 8H+(aq) + ne- -> Mn2+(aq) + 4H2O(l) the value of n is:

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