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An air pollutant is known as a substance in the air that can cause harm to humans and the environment. Pollutants can be in the form of solid particles, liquid droplets or gases. In addition, they may be natural or man-made. Pollutants can be classified as either primary or secondary. Usually, primary pollutants are substances directly emitted from a process, such as ash from a volcanic eruption, the carbon monoxide gas from a motor vehicle exhaust or sulfur dioxide released from factories. Secondary pollutants are not emitted directly. Rather, they form in the air when primary pollutants react or interact. An important example of a secondary pollutant is ground level ozone one of the many secondary pollutants that make up photochemical smog. Note that some pollutants may be both primary and secondary: that is, they are both emitted directly and formed from other primary pollutants. |
Read the passage carefully and answer the questions: |
An air pollutant is known as a substance in the air that can cause harm to humans and the environment. Pollutants can be in the form of solid particles, liquid droplets or gases. In addition, they may be natural or man-made. Pollutants can be classified as either primary or secondary. Usually, primary pollutants are substances directly emitted from a process, such as ash from a volcanic eruption, the carbon monoxide gas from a motor vehicle exhaust or sulfur dioxide released from factories. Secondary pollutants are not emitted directly. Rather, they form in the air when primary pollutants react or interact. An important example of a secondary pollutant is ground level ozone one of the many secondary pollutants that make up photochemical smog. Note that some pollutants may be both primary and secondary: that is, they are both emitted directly and formed from other primary pollutants. |
Read the passage carefully and answer the questions: |
An air pollutant is known as a substance in the air that can cause harm to humans and the environment. Pollutants can be in the form of solid particles, liquid droplets or gases. In addition, they may be natural or man-made. Pollutants can be classified as either primary or secondary. Usually, primary pollutants are substances directly emitted from a process, such as ash from a volcanic eruption, the carbon monoxide gas from a motor vehicle exhaust or sulfur dioxide released from factories. Secondary pollutants are not emitted directly. Rather, they form in the air when primary pollutants react or interact. An important example of a secondary pollutant is ground level ozone one of the many secondary pollutants that make up photochemical smog. Note that some pollutants may be both primary and secondary: that is, they are both emitted directly and formed from other primary pollutants. |
Read the passage carefully and answer the questions: |
An air pollutant is known as a substance in the air that can cause harm to humans and the environment. Pollutants can be in the form of solid particles, liquid droplets or gases. In addition, they may be natural or man-made. Pollutants can be classified as either primary or secondary. Usually, primary pollutants are substances directly emitted from a process, such as ash from a volcanic eruption, the carbon monoxide gas from a motor vehicle exhaust or sulfur dioxide released from factories. Secondary pollutants are not emitted directly. Rather, they form in the air when primary pollutants react or interact. An important example of a secondary pollutant is ground level ozone one of the many secondary pollutants that make up photochemical smog. Note that some pollutants may be both primary and secondary: that is, they are both emitted directly and formed from other primary pollutants. |
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Direction: Arrange the jumbled words to form a meaningful sentence: |
Direction: Arrange the jumbled words to form a meaningful sentence: |
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Direction: Are based on noun. Do as directed: |
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Direction: Fill in the blanks with suitable articles: |
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Direction: identify the parts of predicate in the following sentence: |
Direction: Identify the types of sentence: |
Direction: Identify the types of sentence: |
Direction: identify the kind of adjective the underline word has: |
Direction: are based on analogy. Find the suitable match: |
Direction: are based on analogy. Find the suitable match: |
Direction: A grammatically incorrect sentence is given. You have to find out the incorrect part of the sentence: |
Direction: A grammatically incorrect sentence is given. You have to find out the incorrect part of the sentence: |
Direction: Find the antonyms of the words given in capital letters: |
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Direction: Find the Synonyms of the words given in capital letters: |
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Direction: Fill in the blanks with correct preposition: |
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Direction: Fill in the blanks with correct conjunction: |
Direction: find the kind of adverb the underline word has in the following sentence: |
Direction: Find the odd one out: |
Direction: Find the odd one out: |
Direction: Find the kind of tense for the given sentences: . |
Direction: Find the kind of tense for the given sentences: . |
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