Q36 of 0620_s07_qp_1

Question 36

Question 36 of 40

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No letter options?

Older MCQs might not have the typical A, B, C, D choices. They have choices 1, 2, 3, and a combination of them is the answer. Below is the key that maps such combinations to the answer.

A 1, 2 and 3 are correct

B 1 and 2 only are correct

C 2 and 3 only are correct

D 1 only is correct

Topics Tested

7. Acids, bases and salts

7.1. The characteristic properties...

Describe alkalis in terms of their effect on: (a) litmus (b) thymolphthalein (c) methyl orange

3. Stoichiometry

3.1. Formulae

Deduce the formula of an ionic compound from the relative numbers of the ions present in a model or a diagrammatic representation or from the charges on the ions

12. Experimental techniqu...

12.5. Identification of ions and ga...

Describe the use of a flame test to identify the cations: (a) lithium, ( Li^+ ) (b) sodium, ( Na^+ ) (c) potassium, ( K^+ ) (d) calcium, ( Ca^{2+} ) (e) barium, ( Ba^{2+} ) (f) copper(II), ( Cu^{2+} )