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1 g of U-235 is converted into UF(6). Th...

1 g of U-235 is converted into `UF_(6)`. The radioactivity of `UF_(6)` thus obtained is

A

zero

B

less than that of 1 g of U-235

C

more than that of 1 g of U-235

D

same as that of 1 g of U-235

Text Solution

Verified by Experts

The correct Answer is:
d
Radioactivity does not depend upon the state of combination so it remains unaffected.
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Knowledge Check

  • Assertion : To separate U-235 from the more abundant U-238 isotope, all the uranium is converted into UF_(6) Reason : UF_(6) is one of the new compounds that exists in gaseous state under ordinary conditions

    A
    Both A and R are true and R is the correct explanation of A
    B
    Both A and R are true but R is not a correct explanation of A
    C
    A is true but R is false
    D
    A is false but R is true

  • When ._(92)U^(235)U undergoes fission. About 0.1% of the original mass is converted into energy. Then the amount of ._(92)U^(235) should undergo fission per day in a nuclear reactor so that it provides energy of 200 mega watt electric power is

    A
    `9.6xx10^(-2) kg`
    B
    `4.8xx10^(-2)kg`
    C
    `19.2xx10^(-2)kg`
    D
    `1.2xx10^(-2)kg`

  • The enthalpy of formation of UF(g) is 22kcal mol^(-1) and that of U(g) is 128kcal mol^(-1) . The bond energy of the F-F bond is 37kcal mol^(-1) . The bond dissociation energy of UF(g) is (are):

    A
    `124.5kcal mol^(-1)`
    B
    `131.1kcal mol^(-1)`
    C
    `521 kJ mol^(-1)`
    D
    `623kJ mol^(-1)`

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    If a mass of 3.6 g is fully converted into energy , how many kilowatt hour of electical energy will be obtained ?

    Consider a nuclear power plant to be put up to deliver 4 xx 10^(3)MW power. (a) what will be the ratio of consumption of .^(235)U to operate this plant for 1 year ? (b) Typically 3% of the .^(235)U mass is converted into ._(38)^(90)Sr , which is a beta emitter, with half life 29 yrs. What is the beta activity in the Sr produced in curies, just after the end of 1 yr. Assume 200 MeV is the average yield per fission of .^(235)U .

    Breeder reactors are nuclear reactors that are capable of converting non-radioactive isotopes into radioactive fissionable isotopes, which can be used for generating energy, U-238 , a non-radioactive isotope is thus converted into radioactive.

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