2nd Year NotesEnglish class 12th

Lesson No. 14 Louis Pasteur

Lesson No. 14 Louis Pasteur (Question Answers, & MCQs)

Short an Simple Question Answers

Q1: Describe the early life of Pasteur.

Ans: Pasture was born at Dole in the Jura district of France in 1822. He was sent to school at the Communal College. He graduated in science and Arts from Besancon and was given a post on the college staff. In 1842, he came out 14th on the list in entrance exam to great Ecole Normale in Paris. He refused following year. In 1848, he became deputy professor of chemistry in the University of Strasburg. He married in 1850.

Q2: Give some instances of Pasteur’s patriotism.

Ans: Pasteur was perhaps when more of a patriot then of a scientist. In 1848, when Europe was politically up heaved, Pasteur enrolled himself in the National Guard and gave all his world wealth of 150 francs, for his country. In 1870 he again tried to enroll himself in National Guard, but was refused because he was paralyzed in 1868. He returned the degree of doctor of inedicine bestowed on him by the University of Boo. Because in 1970. France and Germany plunged into was

Q3: What do we mean by spontaneous generation?

Ans: Spontaneous generation is a theory which says that living beings can come into existence from non-living things. The theory was proved wrong by Pasteur.

Q4: How did Pasteur prove that spontaneous generation was not a fact?

Ans: In 1860, the French Academy offered a prize for the solution of the problem whether spontaneous generation was or was not a fact, and Pasteur entered for the competition, and settled the matter once and for all in the negative, proving that if a substance he sufficiently heated to destroy all life and if the air in contact with it be filtered, so that it is free of germs, then the substance does not alter, i.e., bacteria do not develop in it.

Q5: Describe the importance and popularity of the silkworm industry in France. What help did Pasteur render in curing the silkworm disease in his country?

Ans: The keeping of silkworm was one of the chief home industries of the peasantry part of France. People kept silkworms in best rooms of the houses and took a very good care of them. In 1849, the industry was attacked by disease Pasteur researched and found out the solution to the problem.

Q6: How did Pasteur discover the treatment for the cattle disease, Anthrax?

Ans: In 1877, at the age of fifty-five he began to study the cattle-disease named Anthrax. It had already been suggested that this was due to a germ, and Pasteur finally proved the truth of this theory and, further worked out preventive treatment. He cultivated the anthrax bacillus in such a way that it became only mildly poisonous and proved that these weakened germs introduced into an animal’s blood gave rise to only slight symptoms of anthrax and protected the animal from taking the deadly form, much in the same way as vaccination prevents smallpox.

Q7: How did Pasteur discover the method of making vaccines?

Ans: In 1879, whilst working at fowl-cholera and on his return found all his cultivations of the germs dead or dying. He proceeded in inoculate various birds with those dead or dying germs and found that the birds showed signs of illness but recovered. The idea then occurred to him of inoculating them with a fresh lot of virulent germs of chicken-cholera, and he was amazed at the result, viz., that the birds still resisted the disease, though others, which had not been previously dosed with die exhausted germs died.

Q8: Give an account of Pasteur’s treatment of Hydrophobia and how he cured the first patient suffering from it.

Ans: In 1885, a boy, Joseph Meister, was brought to Paris for treatment from a little place in Alsace. He had been bitten by a mad dog two days before. Now, human beings do not as a rule develop hydrophobia for a month or so after being bitten, and Pasteur, being as usual extremely anxious to ward off suffering, undertook the treatment of the boy by inoculations, which were continued for ten days. Meanwhile the boy was hardly ill at all and played about the laboratory very happily, though Pasteur was devoured by fears and anxiety about the results. However, the boy was absolutely cured, and two months later a shepherd, who had been bitten by a mad dog, was similarly cured, and three months later three hundred and fifty cases had been treated, with only one death.

Q9: How did Pasteur show the way to other scientists? Give an account of the discoveries.

Ans: Pasteur provoked other scientists to work on disease. In 1860 he proved the theory of spontaneous generation wrong. In 1865 he saved silkworm industry. In 1877 the cured anthrax in animais. In 1879 he discovered method of vaccine. In 1885 the Pasteur applied inoculation of Hydrophobia or Rabies on human being. This was the last of Pasteur’s discoveries, but his success stirred up other scientists to try similar methods to cure diseases.

Additional Questions Answers

Q1: How did Pasteur provoked other scientist? What was the result?

Ans: The treatment of Hydrophobia or Rabies was the last of Pasteur’s great discoveries, its results were by no means confined to the cure of hydrophobia, for the fame of his success stirred up other scientists to try similar methods of cure for other diseases, and in the ten years between 1880 and 1890 they discovered the germs of consumption, diphtheria, typhoid, lock-jaw, cholera, and Malta fever.

Q2: How did Pasteur bring the facts of disease from supernatural to natural?

Ans: It had been well said that Pasteur “brought the facts of disease and death from the realm of the supernatural and miraculous into the realm of the natural. Disease and death were the great mysteries, where the occult held sway. The malign and mysterious influence of the moon caused lunacy: there was the evil eye with its morbific powers; in fever and in epilepsy the body was possessed by demons; tuberculosis was the King’s Evil, to be cured by the “Sovereign touch.” Far more than all other men, Pasteur abolished for ever these superstitions”.

Multiple Choice Questions

  1. Inflammation of wounds caused amputation necessary
    A. Fermentation
    B. Cutting of limb
    C. Cultivation
    D. Plantation
  2. Pasteur discovered the method of attenuating germs. Theunderlined word means
    A. Cultivating
    B. Killing
    C. Weakening
    D. Producing
  3. Pasteur cultivated anthrax bacillus. The underlined word means
    A. A rod-shaped bacteria

    B. A germ
    D. Inflammation
    C. Wound
  4. France was on the verge of war with Germany. The underlined phrase means
    A. At war
    B. Against
    C. Busy
    D. Near
  5. They were talking to one another. The underlined word is a/an
    A. Emphatic pronoun
    B. Reciprocal pronoun
    C. Interrogative pronoun
    D. Personal pronoun
  6. He is a man whom we all respect. The underlined part is
    A. Noun clause
    C. Adjective clat se
    B. Adverb clause
    D. Noun phrase
  7. If he comes, we will go for a long drive. The underlined part is clause
    A. Main clause
    B. Adjective clause
    C. Noun clause
    D. Conditional clause

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