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प्रश्न
Naphthalene balls are obtained from coal tar and are used as
पर्याय
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
Fossil fuels are ______, ______ and ______.
Coke is almost pure form of carbon.
Coal tar is a mixture of various substances.
Explain the following.
Petrol, diesel, and coal are fossil fuels.
Which substance is formed by the carbonisation of dead vegetation?
Fill in the blanks in the following sentence.
When heated in air, coal burns and produces mainly ______ gas.
The underlined word in the following sentence have been jumbled up. Write them in their correct form.
Loca is obtained from mines.
Write the characteristics and some important uses of coal.
Coke is used in the preparation of dyes, explosives, paints synthetic fibers, and pesticides.
What is deep mining?
