Question 5
Question 5 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
12. Experimental techniqu...
12.5. Identification of ions and ga...

Describe tests to identify the gases: (a) ammonia, NH3, using damp red litmus paper (b) carbon dioxide, CO2, using limewater (c) chlorine, Cl2, using damp litmus paper (d) hydrogen, H2, using a lighted splint (e) oxygen, O2, using a glowing splint (f) sulfur dioxide, SO2, using acidified aqueous potassium manganate(VII)

7. Acids, bases and salts
7.1. The characteristic properties...

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

11. Organic chemistry
11.4. Alkanes

Describe the properties of alkanes as being generally unreactive, except in terms of combustion and substitution by chlorine