Question : Which of the following is used to increase the anti-knocking property of Petrol?
Option 1: Tetra Methyl Lead
Option 2: Tetra Ethyl Lead
Option 3: Tri Methyl Lead
Option 4: Tri Ethyl Lead
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Correct Answer: Tetra Ethyl Lead
Solution : The correct answer is Tetra Ethyl Lead.
Anti-knocking agent is a gasoline additive which is used to reduce engine knocking. Tetra Ethyl Lead (TEL) is used as an anti-knocking compound that helps in auto-ignition by raising the temperature and pressure. It also increases the octane rating of the fuel.
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Question : Which of the following elements is used in the manufacture of fertilisers?
Option 1: Fluorine
Option 2: Potassium
Option 3: Lead
Option 4: Aluminium
Question : Which of the following processes does not increase the amount of carbon dioxide in the air?
Option 1: Breathing
Option 2: Photosynthesis
Option 3: Burning of petrol
Option 4: Aerobic decay of vegetation
Question : Which of the following is not an example of an inflammable substance?
Option 1: Glass
Option 2: Alcohol
Option 3: LPG
Option 4: Petrol
Question : Rectified spirit is:
Option 1: 95% ethyl alcohol
Option 2: 100% ethyl alcohol
Option 3: methylated spirit
Option 4: tincture of iodine
Question : The fuel that is used in modern submarines is
Option 1: Nuclear fuel
Option 2: Petrol
Option 3: Coal
Option 4: Diesel
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