IIT JEE : Nuclear Chemistry QUESTIONS AND ANSWERS :: part1 : 26 to 30
Following IIT JEE Entrance Multiple choice objective type questions and answers will help you in Maths, Physics and Chemistry 2024 examinations :
26.The average life period of a radioactive element is |
| 1.44 T |
| 144 T |
| 0.144 T |
| 14.4 T |
27.Emission is caused by the transformation of one neutron into a proton. This results in the formation of a new element having |
| lower nuclear charge |
| same nuclear charge |
| nuclear charge lower by one unit |
| nuclear charge higher by one unit |
28.A certain nucleide has a half life period of 30 minutes. If a sample containing 600 atoms is allowed to decay for 90 minutes, how many atoms will remains. |
| 175 atoms |
| 250 atoms |
| 450 atoms |
| 75 atoms |
29.A radioactive isotope has a half life of 20 days. If 100 gms. of the substance is taken the weight of the isotope remaining after 40 days is |
| 2.5 gms |
| 15 gms |
| 25 gms |
| 75 gms |
More Nuclear Chemistry QUESTIONS AND ANSWERS available in next pages
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