Question : Denatured spirit is ethanol mixed with
Option 1: Petrol
Option 2: Kerosene
Option 3: Water
Option 4: Pyridine
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Correct Answer: Pyridine
Solution : The correct option is Pyridine.
These denaturants are frequently added to ethanol to make it unfit for human consumption in order to discourage people from drinking it as an alcoholic beverage. Denaturants applied typically include Pyridine is a chemical molecule with a strong, unpleasant odour and a bitter taste that acts as a deterrent to persons consuming denatured alcohol. Other denaturants are Methanol (methyl alcohol): Methanol is harmful to humans and, if consumed, can cause blindness or even death. It is one of the most often used denaturants in ethanol. Isopropanol (isopropyl alcohol): Another harmful chemical added to denatured ethanol to prevent intake is isopropanol. It is often used in home items such as rubbing alcohol.
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Question : Ethanol containing 5% water is known as
Option 1: rectified spirit
Option 2: denatured spirit
Option 3: methylated alcohol
Option 4: power alcohol
Question : Ethanol containing 5% water is known as :
Option 1: Dilute alcohol
Option 2: Power alcohol
Option 3: Rectified spirit
Option 4: Absolute alcohol
Question : Water is not effective in extinguish a fire cause by petrol because
Option 1: The flame is too hot for water to cool it down
Option 2: Water and petrol react chemically
Option 3: Water and petrol are miscible with each other
Option 4: Water and petrol are immiscible with each other and petrol which forms the upper layer continues to burn
Question : Glycol is added to aviation gasoline because it
Option 1: reduces evaporation of petrol
Option 2: increases efficiency of petrol
Option 3: prevents freezing of petrol
Option 4: reduces consumption of petrol
Question : Which of the following is used to remove rust stains on cloth ?
Option 1: Kerosene
Option 2: Lime
Option 3: Oxalic acid solution
Option 4: Petrol
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