// Edit Zone 
var data = {
    "_rubric": "<b>Match the following.</b>",
    "_title": "<b></b>",
    "_leftCol": [
        "Nitrogen",
        "Oxygen",
        "Argon",
        "Carbon dioxide",
        "Other gases"
    ],
    "_rightCol": [
        "0.04 per cent",
        "0.17 per cent",
        "0.90 per cent",
        "20.9 per cent",
        "78 per cent"
    ],
    "_colHead": [],
    "_answers": [
        [
            "5"
        ],
        [
            "4"
        ],
        [
            "3"
        ],
        [
            "1"
        ],
        [
            "2"
        ]
    ],
    "type": "MatchTheColumns",
    "intro": "a"
};