Radioisotopes Half-Life Quiz

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Which of the following statements is NOT true about half-life of radioisotopes?

The faster the isotope decays the more stable it is (correct)

The half-life is unique for any given isotopes

The faster the isotope decays the more unstable it is

Half-life is the time it takes for the amount of radioactivity to reduce 50%

1 becquerel is equivalent to ___

2.7 x 10^-5 curie

2.7 x 10^-10 curie

2.7 x 10^-6 curie (correct)

2.7 x 10^-11 curie

Which type of radiation has no mass and no charge but has the greatest penetrating power?

Alpha radiation

Sun rays

Beta radiation

Gamma radiation (correct)

The effect of the radioactive particles passing through biological tissue would depend upon which of the following characteristics?

I, II, IV Signup and view all the answers

Which of the following is used as the unit of measure for radioactivity?

Becquerel Signup and view all the answers

Petrolatum USP is NOT soluble in _______?

Ethyl alcohol Signup and view all the answers

What is liberated when potassium permanganate is reacted with hydrochloric acid?

Chlorine Signup and view all the answers

Which of the following phrases BEST describes the process of water undergoing electrolysis to form hydrogen and oxygen molecules?

Chemical change Signup and view all the answers

The following react with water forming an acid solution, EXCEPT:

Ammonia Signup and view all the answers

Which of the following refers to a kind of chemical reaction whereby a substance splits into simpler substances?

Decomposition reaction Signup and view all the answers

Which of the following statements best describes facilitated diffusion?

Carrier-specific Signup and view all the answers

This allotrope of Phosphorous is made by heating phosphorus at 200 degrees Celsius under a pressure of 1,200 atm.

Black phosphorus Signup and view all the answers

What happens to the water solubility of alcohols as the molecular weight increases?

It increases Signup and view all the answers

How does the polarity of alcohols change with an increase in the number of hydroxyl groups?

It decreases Signup and view all the answers

What happens to the water solubility of alcohols as the branching of the carbon chain increases?

It decreases Signup and view all the answers

Which statement is correct about Mineral Oil USP?

It is miscible with alcohol Signup and view all the answers

What is the correct description of surfactants?

They have water solubilizing and fat solubilizing groups in the same molecule Signup and view all the answers

Which compound is formed when there is a combination of an electron donor and a metal forming a ring structure?

Chelate Signup and view all the answers