⟩ Heat is generated in a nuclear reactor (thermal) by A. combustion of a nuclear fuel e.g. uranium. B. fusion of atoms of uranium. C. absorption of neutrons in uranium atoms. D. fission of U-235 by neutrons.?
Option D
Option D
Refractive index of a petrofuel which is the ratio of velocity of light in air to its velocity in the petrofuel gives an indication if its A. molecular weight B. aromatics content C. both a & b D. neither a nor b
Butadiene is a/an A. di-olefin B. naphthene C. aromatic D. olefin
Gasoline extracted from natural gas (by compression and cooling) is called the __________ gasoline. A. polymer B. unleaded C. casing head D. straight run
Flash point of an oil is determined by the A. Pensky Martens apparatus. B. Ramsbottom apparatus. C. Saybolt viscometer. D. Conradson apparatus.
Which of the following categories of gasoline has the highest lead susceptibility? A. Straight run gasoline B. Platinum reformed gasoline C. Catalytical cracked gasoline D. Polymer gasoline
Gum formation in stored gasoline is mainly due to the A. alkylation of unsaturates. B. presence of sulphur. C. oxidation & polymerisation of unsaturates. D. higher aromatic content.
Catalyst used in catalytic polymerisation which produces polymer gasoline is A. H2SO4 B. H3PO4 C. both (a) and (b) D. AlCl3
Antioxidants are added in petrol to A. impart colour to it, for easy identification. B. minimise the gum formation. C. prevent icing of the carburettor. D. prevent the lead build up in engines.
Good quality kerosene should have A. low smoke point. B. high smoke point. C. high aromatics content. D. low paraffins content.
Which of the following reactions is undesirable in the production of catalytically reformed gasoline? A. Dehydrogenation of naphthene B. Dehydrogenation of lower paraffins C. Dehydrocyclisation of higher paraffins D. Isomerisation of paraffins