Related Questions

β-rays emission in radioactive disintegration is always accompanied by the emission of
A γ-rays
B α-rays
C Neutrons
D None of these
240 radioactive grams of goo loses half its radioactivity every 10 days. How many grams of radioactive goo is left in 40 days?
A 120
B 60
C 15
D none
The half life period of a radioactive substance is best determined by counting the number of alpha particles emitted per second in a Geiger Muller counter from its known quantity. If the half life period of a radioactive substance is one month, then
A $${\frac{3}{4}^{{\text{th}}}}$$ of it will disintegrate in two months
B It will completely disintegrate in two months
C It will completely disintegrate in four months
D $${\frac{l}{8}^{{\text{th}}}}$$ of it will remain intact at the end of four months
Which of the following may be used to measure the rate of nuclear disintegration?
A Geiger-Muller Counter
B Cold Chamber
C Cyclotron
D Van De Graph Generator
Disintegration of the USSR occurred in:
A 1988
B 1989
C 1991
D 1987
Choose the best meaning for the underlined word on the phrase that can be best substitute to keep the meaning of a original sentence. The disintegration of joint family is producing a number of psychotic disorder.
A Abolishment
B Breakdown
C Postponement
D Withdrawal
Which one of the following was the cause of disintegration of the Mughal Empire?
A War of succession among sons of Aurangzeb
B Attacks of Nadir Shah and Ahmad Shah Abdali
C Revolts of various communities like Jats, Sikhs, Rajputs etc.
D All of the above mentioned factors contributed to the downfall of the Mughal Empire.
Which scientist discovered the radioactive element radium?
A Isaac Newton
B Marie Curie
C Benjamin Franklin
D None of these
Which of the following is NOT a radioactive element?
A Uranium
B Plutonium
C Titanium
D Thorium
Which among the following is a positively charged particle emitted by a radioactive element?
A Beta ray
B Alpha ray
C Cathode ray
D Gamma ray

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