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Chemistry Exam  >  Chemistry Tests  >  Test: Half Life Time, Mean Life & Radioactivity Series - Chemistry MCQ

Test: Half Life Time, Mean Life & Radioactivity Series - Chemistry MCQ


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10 Questions MCQ Test - Test: Half Life Time, Mean Life & Radioactivity Series

Test: Half Life Time, Mean Life & Radioactivity Series for Chemistry 2024 is part of Chemistry preparation. The Test: Half Life Time, Mean Life & Radioactivity Series questions and answers have been prepared according to the Chemistry exam syllabus.The Test: Half Life Time, Mean Life & Radioactivity Series MCQs are made for Chemistry 2024 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Test: Half Life Time, Mean Life & Radioactivity Series below.
Solutions of Test: Half Life Time, Mean Life & Radioactivity Series questions in English are available as part of our course for Chemistry & Test: Half Life Time, Mean Life & Radioactivity Series solutions in Hindi for Chemistry course. Download more important topics, notes, lectures and mock test series for Chemistry Exam by signing up for free. Attempt Test: Half Life Time, Mean Life & Radioactivity Series | 10 questions in 10 minutes | Mock test for Chemistry preparation | Free important questions MCQ to study for Chemistry Exam | Download free PDF with solutions
Test: Half Life Time, Mean Life & Radioactivity Series - Question 1
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What is the half-life of a radioactive element?

Detailed Solution for Test: Half Life Time, Mean Life & Radioactivity Series - Question 1
The half-life of a radioactive element is the time it takes for the number of radioactive atoms to reduce to half of their initial value. This concept is fundamental in understanding the rate of decay of radioactive materials.
Test: Half Life Time, Mean Life & Radioactivity Series - Question 2
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What is the unit of half-life?

Detailed Solution for Test: Half Life Time, Mean Life & Radioactivity Series - Question 2
The unit of half-life is usually expressed in seconds. It represents the time it takes for half of the radioactive atoms in a sample to decay.
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Test: Half Life Time, Mean Life & Radioactivity Series - Question 3
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Which formula represents the relation between half-life (T1/2) and the number of half-lives (n)?

Detailed Solution for Test: Half Life Time, Mean Life & Radioactivity Series - Question 3
The formula that relates half-life (T1/2) and the number of half-lives (n) is T1/2 = 1/n. This formula helps calculate the half-life of a radioactive substance based on the number of half-life intervals.
Test: Half Life Time, Mean Life & Radioactivity Series - Question 4
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What is the mean life of a radioactive material?
Detailed Solution for Test: Half Life Time, Mean Life & Radioactivity Series - Question 4
The mean life of a radioactive material is the average time taken for the atoms of that element to decay. It is a measure of the stability of the radioactive substance.
Test: Half Life Time, Mean Life & Radioactivity Series - Question 5
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What is the relationship between mean life (t) and half-life (T1/2)?
Detailed Solution for Test: Half Life Time, Mean Life & Radioactivity Series - Question 5
The relationship between mean life (t) and half-life (T1/2) is given by t = 1.44T1/2. This formula allows us to calculate the mean life based on the half-life of a radioactive substance.
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Which type of radiation has the greatest ionizing power?
Detailed Solution for Test: Half Life Time, Mean Life & Radioactivity Series - Question 6
Alpha particles have the greatest ionizing power among the given options. They interact strongly with matter, causing significant ionization of atoms along their path.
Test: Half Life Time, Mean Life & Radioactivity Series - Question 7
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Which type of radiation has a continuous energy spectrum?
Detailed Solution for Test: Half Life Time, Mean Life & Radioactivity Series - Question 7
Beta particles have a continuous energy spectrum, meaning that they can be emitted with a range of energies, unlike alpha and gamma particles, which have discrete energy levels.
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What is the range of alpha particles in air?
Detailed Solution for Test: Half Life Time, Mean Life & Radioactivity Series - Question 8
The range of alpha particles in air is approximately 2.6 cm to 8.6 cm, depending on their energy. They lose energy as they travel through air.
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A radioactive nucleus (Parent) emits one alpha and two beta particles, and then the daughter nucleus is:
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Test: Half Life Time, Mean Life & Radioactivity Series - Question 10
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What is the unit of radioactivity?
Detailed Solution for Test: Half Life Time, Mean Life & Radioactivity Series - Question 10

The amount of radioactivity is measured in becquerels (Bq) or curies (Ci). 

Bq is the international unit, while Ci is the unit used in the United States. Bq is named after Henri Becquerel, the discoverer of radioactivity. 1 Bq is equal to 2.7×10−11 Ci. 

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