Answer
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Hint: It is a sweet, odourless, colourless, slightly viscous liquid. It is used as an automobile radiator in cars, raw material in the manufacture of polyester fibers, explosives, synthetic waxes and also used as an ingredient in hydraulic fluids.
Complete step by step process:
Option A is “ethylene glycol”. Ethylene glycol is a sweet, odourless, colourless, slightly viscous liquid that boil at ${198^ \circ }C$.The freezing point of ethylene glycol is -12.9 $^ \circ C$ so, it is used as an anti-freezing agent in the radiator of the car. It helps as a coolant in summers and keeps your car engine from freezing in the winters. It is used as an ingredient in hydraulic fluids, printing inks and paint solvents and also used as a reagent in the manufacture of explosives, synthetic waxes .
Hence, the correct option is A.
Option B is “ethylene”. Ethylene is a sweet, colourless, musky, odour. The freezing point of ethylene is -162 $^ \circ C$. The colder countries have an average temperature of -20 $^ \circ C$ in that case it becomes solid so it cannot be used as an anti-freezing agent in a car radiator.
Hence, B is the incorrect option.
Option C is “alcohol”. Alcohols generally have a high boiling point compared to other hydrocarbons and they are also soluble in water. The freezing point of alcohol is -114.1 $^ \circ C$. It will also become solid during the winters so it cannot be used as an anti-freezing agent in a car radiator.
Hence, C is the incorrect option.
Option D is ”water”. Water is a tasteless, odourless and colourless chemical substance.
The freezing point of water is 0 $^ \circ C$. In cold countries during the winter season sometimes the temperature might reach -4 $^ \circ C$ so water is not an option in all atmospheric conditions.
Hence, D is the incorrect option.
Thus from the above discussion option A is the correct option.
Note: Since, the freezing point of ethylene glycol is -12.9 $^ \circ C$ so it remains in liquid state in all conditions whether it is summer or winter. Due to a constant liquid state it is used as a coolant in car radiators.
Complete step by step process:
Option A is “ethylene glycol”. Ethylene glycol is a sweet, odourless, colourless, slightly viscous liquid that boil at ${198^ \circ }C$.The freezing point of ethylene glycol is -12.9 $^ \circ C$ so, it is used as an anti-freezing agent in the radiator of the car. It helps as a coolant in summers and keeps your car engine from freezing in the winters. It is used as an ingredient in hydraulic fluids, printing inks and paint solvents and also used as a reagent in the manufacture of explosives, synthetic waxes .
Hence, the correct option is A.
Option B is “ethylene”. Ethylene is a sweet, colourless, musky, odour. The freezing point of ethylene is -162 $^ \circ C$. The colder countries have an average temperature of -20 $^ \circ C$ in that case it becomes solid so it cannot be used as an anti-freezing agent in a car radiator.
Hence, B is the incorrect option.
Option C is “alcohol”. Alcohols generally have a high boiling point compared to other hydrocarbons and they are also soluble in water. The freezing point of alcohol is -114.1 $^ \circ C$. It will also become solid during the winters so it cannot be used as an anti-freezing agent in a car radiator.
Hence, C is the incorrect option.
Option D is ”water”. Water is a tasteless, odourless and colourless chemical substance.
The freezing point of water is 0 $^ \circ C$. In cold countries during the winter season sometimes the temperature might reach -4 $^ \circ C$ so water is not an option in all atmospheric conditions.
Hence, D is the incorrect option.
Thus from the above discussion option A is the correct option.
Note: Since, the freezing point of ethylene glycol is -12.9 $^ \circ C$ so it remains in liquid state in all conditions whether it is summer or winter. Due to a constant liquid state it is used as a coolant in car radiators.
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