Question 11 MarkCNG is less polluting fuel than petrol and diesel.AnswerTrueView full question & answer→
Question 21 MarkCoal tar has been used for metalling the roads .AnswerTrueView full question & answer→
Question 41 MarkUnder high temperature and pressure, dead plants get slowly converted to coal.AnswerTrueView full question & answer→
Question 61 MarkOxygen in air is an exhaustible natural resource.AnswerFalse, Oxygen in air is an inexhaustible natural resources because it is continuously recycled in the atmosphere.View full question & answer→
Question 71 MarkResources which are present in unlimited quantity in nature are called exhaustible natural resources.AnswerFalse, Resources which are present in unlimited quantity in nature are called on inexhaustible natural resources.View full question & answer→
Question 81 MarkKerosene is not a fossil fuel.AnswerFalse, Kerosene is a kind fossil fuel.View full question & answer→
Question 111 MarkCNG is more polluting fuel than petrol.AnswerFalse, CNG is a clean fuel and less polluting fuel than petrol.View full question & answer→
Question 121 MarkFossil fuels can be made in the laboratory.AnswerFalse, Fossil fuels are made by natural process.View full question & answer→