Question 37
Question 37 of 40
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Periodic Table
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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
12. Nitrogen and sulfur
12.1. Nitrogen and sulfur

understand that atmospheric oxides of nitrogen (NO and NO\(_2\)) can react with unburned hydrocarbons to form peroxyacetyl nitrate, PAN, which is a component of photochemical smog

9. The Periodic Table: ch...
9.2. Periodicity of chemical proper...

state and explain the variation in the oxidation number of the oxides (Na₂O, MgO, Al₂O₃, P₄O₁₀, SO₂ and SO₃ only) and chlorides (NaCl, MgCl₂, AlCl₃, SiCl₄, PCl₆ only) in terms of their outer shell (valence shell) electrons