Question : An isotope of which of the following is used in the treatment of cancer?
Option 1: Cobalt
Option 2: Iron
Option 3: Nickel
Option 4: Aluminium
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Correct Answer: Cobalt
Solution : The correct answer is Cobalt.
Radiotherapy, a cancer treatment method, employs the radioactive isotope cobalt-60. This isotope is instrumental in arresting the development of cancer through a process known as radiotherapy. In this treatment, the highly energetic gamma radiation emitted by cobalt-60 is precisely directed towards cancerous cells. The purpose of this targeted radiation is to effectively "burn" the cancer cells, helping to eliminate or control their growth while minimising damage to surrounding healthy tissues.
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Question : Among the following, in which material is the speed of sound is highest? (at 25°C)
Option 1: Nickel
Option 2: Steel
Option 3: Iron
Question : Magnetic keepers are pieces of:
Option 1: nickel
Option 2: cobalt
Option 3: steel
Option 4: soft iron
Question : Which part of the Earth has an abundance of nickel and iron?
Option 1: SIAL
Option 2: SIMA
Option 3: NIFE
Option 4: No option is correct.
Question : A fuse wire is made of
Option 1: An alloy of tin and copper
Option 2: An alloy of tin and lead
Option 3: An alloy of tin and aluminium
Option 4: An alloy of Nickel and Chromium
Question : Which one of the following is the purest commercial form of iron?
Option 1: Pig iron
Option 3: Stainless steel
Option 4: Wrought iron
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