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प्रश्न
Naphthalene balls are obtained from coal tar and are used as
विकल्प
mosquito repellant
honeybee repellant
moth repellant
snake repellant
उत्तर
moth repellant
Explanation -
Naphthalene balls are used to repel moths and other insects (in stored clothes, etc).
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संबंधित प्रश्न
Coke is almost pure form of carbon.
Coal tar is a mixture of various substances.
What are the different types of coal?
Coal is processed in industries to get some useful products. Which of the following is not obtained from coal?
The underlined word in the following sentence have been jumbled up. Write them in their correct form.
Loca is obtained from mines.
The slow process of conversion of dead vegetation into coal is called ______.
During the processing of coal to get coke, coal tar and ______ are also obtained.
Write True/False against the following statement.
Under high temperature and pressure, dead plants get slowly converted to coal.
Activated carbon, used in filters for water and air purification and in ______ machines is obtained from coal.
Coal helps to create alumina refineries.
