Which of the following pollutant causes aggravation of respiratory disease, and atmospheric discolouration?निम्नलिखित में से कौन-सा प्रदूषक श्वसन रोग की उग्रता और वायुमंडलीय विवर्णन (atmospheric discolouration) का कारण बनता है?
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Correct answer: C. Nitrogen dioxideनाइट्रोजन डाइऑक्साइड
Explanation
Nitrogen dioxide is a reddish-brown gas; it absorbs visible light and gives polluted urban air its characteristic brown haze, that is atmospheric discolouration, while also irritating the airways and aggravating asthma and bronchitis. Carbon monoxide and ozone are colourless and lead is a particulate toxin. Hence the answer is nitrogen dioxide.नाइट्रोजन डाइऑक्साइड लाल-भूरे रंग की गैस है; यह दृश्य प्रकाश को अवशोषित करके प्रदूषित नगरीय वायु को उसका विशिष्ट भूरा धुँधलापन अर्थात् वायुमंडलीय विवर्णन देती है, साथ ही श्वास-नलिकाओं में जलन पैदा कर दमा और श्वसनी-शोथ को उग्र करती है। कार्बन मोनोऑक्साइड और ओज़ोन रंगहीन हैं तथा सीसा एक कणिकीय विषाक्त पदार्थ है। अतः उत्तर नाइट्रोजन डाइऑक्साइड है।More People, Development and Environment questions
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