Chemistry 3

Chemistry (Civil Service Examination), Questions and Answers, GK for UPSC, Bank PO & All Exams

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1. The difference between a nuclear reactor and an atomic bomb is that [1995]


2. Cobalt-60 is commonly used in radiation therapy because it emits [1999]


3. Which one of the following pairs of materials serves as electrodes in chargeable batteries commonly used in devices such as torch lights, electric shaver etc? [1995]


4. Which one of the following can be used to confirm whether drinking water contains a gamma emitting isotope or not?


5. Which one of the following elements is essential for the construction of nuclear reactors? [1998]


6. Match the names of outstanding Indian scientists given in List I with area of their specialized work given in List II and select the correct answer by using the codes given below the lists: [1998]
List-1 – List-II
A. Dr. Raja Ramanna – 1. Plant chemistry
B. Dr. M.S. Swaminathan – 2. Nuclear physics
C. Prof. U.R Rao – 3. Thermodynamics & astrophysics
D. Prof. Meghnad Saha – 4. Space research
5. Agricultural science


7. ‘Yellow cake’, at item of smuggling across border is


8. Barium in a suitable form is administered to patients before an X-ray examination of the stomach, because [1999]


9. The alpha particle carries two positive charge. Its mass is very nearly equal to that of [1996]


10. Assertion (A) : Large cold storage plants use ammonia as refrigerant while domestic refrigerators use chlorofluorocarbons.
Reason (R) : Ammonia can be liquefied at ambient temperature and low pressure. [2000]


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