Carbon and Fossil Fuels

Isopropanol (isopropyl alcohol) is commonly known as rubbing alcohol. It is widely used as an antiseptic and disinfectant.

Peat is the lowest grade of coal where recognizable plant material remains visible due to minimal decomposition. Lignite, bitumen and anthracite represent progressively more compressed and altered coal where original plant structures are no longer identifiable.

Tetraethyl lead was historically added to petrol (gasoline) as an anti-knocking agent to prevent engine damage. It is not used as a pain killer, fire extinguisher or mosquito repellent. Its use has been phased out due to lead toxicity.

Graphite's layered structure allows sheets to slide over each other easily, making it an effective solid lubricant especially at high temperatures. Silica and iron oxide are abrasive, not lubricating. Diamond is the hardest substance and used as an abrasive, not a lubricant.

Peat is the lowest grade of coal and contains recognizable traces of the original plant material from which it formed. It's the first stage in coal formation, followed by lignite, bituminous coal, and anthracite in increasing maturity.

Tetraethyl lead (TEL) was historically used as an additive in petrol (gasoline) to improve octane rating and prevent engine knocking. It's an organolead compound that was phased out due to environmental and health concerns.

Graphite is an excellent solid lubricant due to its layered structure. The weak van der Waals forces between graphene layers allow them to slide easily over each other, making graphite useful in locks, hinges, and industrial applications.

Diesel engines do NOT have spark plugs at all. They use compression ignition where fuel ignites spontaneously due to the high temperature from compressed air, not from a spark. Petrol engines require spark plugs to ignite the fuel-air mixture. So diesel engines have zero spark plugs, which is fewer than any petrol engine (typically 4, 6, or more spark plugs depending on cylinders).

The MTT Turbine Superbike (Y2K) is powered by a Rolls-Royce-Allison 250-C18 gas turbine engine. Like most turbine engines, it is versatile and can run on Kerosene, Diesel, and Jet A fuel. High Octane Petrol is incorrect as it is formulated for internal combustion piston engines, not turbines.

A conflagration is a large, destructive fire that burns many things. Option C 'great fire' correctly defines this. The distractors include a typo (invioably sacred) and unrelated terms: oily, speed.

'NICHE' can be formed from 'PETROCHEMICALS'. Counting letters: N(1), I(1), C(1), H(1), E(1) - all are present in PETROCHEMICALS. SEMI, PALS, and METRO cannot be formed with available letters.

Gasoline is obtained from crude oil through fractional distillation, which separates petroleum products based on their boiling points. Different fractions condense at different temperatures, producing gasoline, diesel, kerosene, and other products. Simple distillation doesn't separate effectively enough for complex mixtures like crude oil.

CC in engines stands for cubic centimeter, which measures the volume of the engine's cylinders. It indicates the engine's displacement - the total volume of air-fuel mixture the engine can draw in during one complete cycle. Larger CC values generally mean more power output.

Yes, it is the correct answer as steel is the odd one out. All other substances are inflammable, while steel is not.

 Yes, it is correct .Hydrogen has highest calorific value.1,50,000 kj / kg.Hence combustion of hydrogen produces huge amount of heat energy, and so considered as best fuel.