WB JEE 2019 | Radioactivity and Nuclear Chemistry Question 5 | Chemistry

WB JEE 2019

MCQ (Single Correct Answer)

-0.33

Which atomic species cannot be used as a nuclear fuel?

$$_{92}^{233}$$U

$$_{92}^{235}$$ U

$$_{94}^{239}$$Pu

$$_{92}^{238}$$U

WB JEE 2018

MCQ (Single Correct Answer)

-0.33

The half-life of C¹⁴ is 5760 years. For a 200 mg sample of C¹⁴, the time taken to change to 25 mg is

11520 years

23040 years

5760 years

17280 years

WB JEE 2018

MCQ (Single Correct Answer)

-0.33

The nucleus $$_{29}^{64}$$Cu accepts an orbital electron to yield,

$$_{28}^{65}$$Ni

$$_{30}^{64}$$Zn

$$_{28}^{64}$$Ni

$$_{30}^{65}$$Zn

WB JEE 2017

MCQ (Single Correct Answer)

-0.25

C₆H₅F¹⁸ is a F¹⁸ radio-isotope labelled organic compound. F¹⁸ decays by positron emission. The product resulting on decay is

C₆H₅O¹⁸

C₆H₅Ar¹⁹

B¹²C₅H₅F

C₆H₅O¹⁶

WB JEE Subjects