⟩ Which of the following may be used to measure the rate of nuclear disintegration? A. Geiger-Muller Counter B. Cyclotron C. Cold chamber D. Mass spectrograph?
Option A
Option A
Equal volumes of aniline and diesel oil when mixed at room temperature (during summer) was found to be completely mis-cible. It means that the aniline point of the diesel is __________ the room temperature. A. more than B. less than C. same as D. either more or less; depends on the room temperature
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.