In India, the Air (Prevention and Control of Pollution) Act came into force in 1981, but was amended in ________ to include noise as an air pollutant. भारत मवायुदुषण िनरोध एवं िनयंण अिधिनयम 1981 मलागूआ, लेिकन इसम ______ मसंशोधन कर शोर को वायुदुषण के प मसिलत िकया गया। Options: 1) 1987 2) 1997 3) 2007 4) 2017
Answered 7 yr ago
bhavishya kumarCorrect Answer: 1987 ...Read more
Which of the following gases is heavier than oxygen? िनिलखत मसेकौन सी गैस ऑीजन सेभारी होती है? Options: 1) Carbon dioxide काबन डाईऑाइड 2) Ammonia अमोिनया 3) Methane मीथेन 4) Helium हीिलयम
Answered 7 yr agoCorrect Answer: Carbon dioxideSince the density of a gas at any given pressure and temperature depends almost entirely on its molecular weight, any gas with a molecular weight greater than Nitrogen will be heavier than air.Common gases that are heavier than air include;...Read more
PET is a very familiar form of _____________. It is used for making bottles. पेट (पीइटी) एक बत सुपरिचत कार का ____ है। इसका उपयोग बोतल बनानेके िलए िकया जाता है। Options: 1) Nylon नाइलॉन 2) Acrylic एििलक 3) Polyester पॉिलएर 4) Rayon रेयॉन
Answered 7 yr agoCorrect Answer: PolyesterBottles made of polyethylene terephthalate (PET, sometimes PETE) can be "recycled" to reuse ... Therefore, most recycled bottles are used to make lower grade products, such as carpets. ... ...Read more