Question

[2]. Read the following passage carefully and answer the question.

Passage: In 1928 Alexander Fleming returned to his London laboratory after a holiday and noticed something strange on a discarded culture plate. A mould had grown on the plate, and around it the bacteria had stopped growing. Fleming did not throw the plate away. He studied the mould, identified it as Penicillium, and showed that the substance it produced could kill many harmful bacteria. The discovery did not at once become a medicine. It took more than a decade of work by Florey and Chain to purify penicillin and test it safely in patients. Yet the first step was simple observation: a careful scientist noticed what others might have ignored and asked why it had happened.

According to the passage, which of the following statements is true?

1.
Fleming noticed that bacteria stopped growing around a mould on a discarded culture plate.
2.
Cooled lava breaks down over centuries into rich, fertile soil that farmers prize.
3.
Keepers cleaned the great lens, trimmed the wick and watched through the night that the lamp never went out.
4.
Women pioneers collected plant specimens on long field trips, calculated data by hand and published papers others built upon.
Answer (Detailed Solution Below)

Option 1 : Fleming noticed that bacteria stopped growing around a mould on a discarded culture plate.

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Detailed Solution

सही उत्तर Fleming noticed that bacteria stopped growing around a mould on a discarded culture plate. है।

Key Points

The passage states: Fleming noticed that bacteria stopped growing around a mould on a discarded culture plate.

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Question:

[2]. Read the following passage carefully and answer the question.

Passage: In 1928 Alexander Fleming returned to his London laboratory after a holiday and noticed something strange on a discarded culture plate. A mould had grown on the plate, and around it the bacteria had stopped growing. Fleming did not throw the plate away. He studied the mould, identified it as Penicillium, and showed that the substance it produced could kill many harmful bacteria. The discovery did not at once become a medicine. It took more than a decade of work by Florey and Chain to purify penicillin and test it safely in patients. Yet the first step was simple observation: a careful scientist noticed what others might have ignored and asked why it had happened.

According to the passage, which of the following statements is true?

1.
Fleming noticed that bacteria stopped growing around a mould on a discarded culture plate.
2.
Cooled lava breaks down over centuries into rich, fertile soil that farmers prize.
3.
Keepers cleaned the great lens, trimmed the wick and watched through the night that the lamp never went out.
4.
Women pioneers collected plant specimens on long field trips, calculated data by hand and published papers others built upon.

Correct Answer: Fleming noticed that bacteria stopped growing around a mould on a discarded culture plate.

The passage states: Fleming noticed that bacteria stopped growing around a mould on a discarded culture plate.

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