Updated 11th Standard CBSE Chemistry Study Materials 2022-2023 Exams

CBSE 11th Standard Chemistry Subject Value Based Questions 5 Mark Questions 2021 Part - II Ashutosh Saran - Gurgaon May-31 , 2021

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CBSE 11th Standard Chemistry Subject Value Based Questions 5 Mark Questions 2021 Part - II

11th Standard CBSE

Chemistry

Time : 00:30:00 Hrs

Total Marks : 25

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?

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