Question 32
Question 32 of 40
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Periodic Table
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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
9. Metals
9.4. Reactivity series

Describe the reactions, if any, of: (a) potassium, sodium and calcium with cold water (b) magnesium with steam (c) magnesium, zinc, iron, copper, silver and gold with dilute hydrochloric acid and explain these reactions in terms of the position of the metals in the reactivity series

12. Experimental techniqu...
12.5. Identification of ions and ga...

Describe tests using aqueous sodium hydroxide and aqueous ammonia to identify the aqueous cations: (a) aluminium, ( Al^{3+} ) (b) ammonium, ( NH_4^+ ) (c) calcium, ( Ca^{2+} ) (d) chromium(III), ( Cr^{3+} ) (e) copper(II), ( Cu^{2+} ) (f) iron(II), ( Fe^{2+} ) (g) iron(III), ( Fe^{3+} ) (h) zinc, ( Zn^{2+} )

6. Chemical reactions
6.3. Reversible reactions and equil...

State the symbol equation for the production of ammonia in the Haber process, ( N_2(g) + 3H_2(g) ightleftharpoons 2NH_3(g) )