What are substances that take electrons from other substancescalled? reducing ag

Question

What are substances that take electrons from other substancescalled?
      reducing agents
       oxidizingagents
       redoxagents
       hydrocarbons


A curie is a measure of
       radiation received bya material.
       biological effect ofradiation.
       nucleardisintegrations at a source.
       radiationdamage.


A rem is a measure of radiation received that takes intoaccount
       total radiationreceived over time.
       biological effect ofradiation.
       nucleardisintegrations per unit time.
       radiationdamage.


The loss of which particle preserves the mass number? The emissionof
       protons.
       alphaparticle.
       betaparticle.
       neutrons.


A red giant star is a
       high temperature giantstar.
       high temperature starthat is very bright.
       low temperature starwith a large surface area.
       low temperature starwith a small surface area.


Compared to a star like the Sun, a blue-white star
       is moremassive
       has a higher surfacetemperature
       burns its fuel at agreater rate
            all of these

Explanation / Answer

We Know that :            a.               The Subctance which takes electrons from other substances arecalled Oxidizing agent.        b.                A curie is a measure of nuclear disintegration per unittime.         c.                A rem is a measure of total radiation received over a time.          d.                   The loss of particle preserves the mass number.          e.                A red giant star is a Low temperature star withlarge surface area.           f.                Compared to star like sun a blue - white star has highersurface temperature.

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