Science Chemistry MCQ-198

General Science-Chemistry online Exam JPSC, UPSC, NDA, CivilsPrelims, RBI, UPPSC, SSC, CDS Exams

The name fire damp is given


Marsh gas mainly contains


The compound with the highest boiling point is


When water vapours are passed over aluminium carbide,we get


Satuarated hydrocarbons undergo


Carbon black is obtained when methane is


What is the volume of oxygen required for the complete combustion of 4 litres of ethane


Kerosene is a mixture of


Which of the following substance is used as antiknock compound ?


Most of hydrocarbons from petroleum are obtained by-


Knocking sound is produced in the engine when the fuel contains


The knocking will be minimum when the mixture of fuel is


Petroleum is a mixture of


Petroleum is found


Iso-octane is added to petrol


Petroleum consists of


The fraction obtained between temperature 150-3000C during fractional distillation of crude petroleum is


A mixture of CS2 and H2S on passing over heated copper gives


The gas supplied in cylinders for cooking is


The thermal decomposition of alkanes is known as


Octane number of a fuel can be increased by


Which of the following compounds has been given an octane number of 100 ?


Which of the following is not linked with methane ?


paraffin wax is


Purification of petroleum is carried out by the following method