CBSE 11th Standard Chemistry Subject Value Based Questions 5 Mark Questions 2021 Part - II
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CBSE 11th Standard Chemistry Subject Value Based Questions 5 Mark Questions 2021 Part - II
11th Standard CBSE
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Reg.No. :
Chemistry
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Wilhelm Rontgen showed that when electrons strike a material in the cathode ray tube, some rays are originated that can cause fluorescence in the fluorescent material placed outside the cathode ray tubes. He named these rays as X-rays as these were not deflected by electric and magnetic field. X-rays are used as a diagnostic tool in the treatment of disease and bone fracture. An intelligence officer, John catched a smuggler by using this X-ray machine. He was trying to smuggle the drugs while travelling abroad.
(a) Why are X-rays used at airport to screen luggage?
(b) Why are only X-ray choosed to screen the luggage?
(c) What values are not possessed by John? What measures should be taken to prevent this?(a)
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CBSE 11th Standard Chemistry Subject Value Based Questions 5 Mark Questions 2021 Part - II Answer Keys
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(a) It is done to screen any undesirable/dangerous items carried by passengers.
(b) This is because of their high penetrating power through the matter and undeflected nature towards electric and magnetic field.
(c) John is enemy of mankind. He should be given punishment for such crimes. Police officer had done a good job by arresting Wn.