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Consider the following statements: 1. The chain reaction process is used in nuclear bombs to release a vast amount of energy, but in nuclear reactors, there is no chain reaction. 2. In a nuclear reactor, the reaction is controlled, while in nuclear bombs, the reaction is uncontrolled. 3. In a nuclear reactor, all operating reactors are ‘critical’, while there is no question of ‘criticality’ in case of a nuclear bomb. 4. Nuclear reactors do not use moderators, while nuclear bombs use them. Which of the above statements about operational principles of a nuclear reactor and a nuclear bomb is / are correct?
Consider the following statements.
1. The chain reaction process is used in nuclear bombs to release a vast amount of energy, but in nuclear reactors, there is no chain reaction.
2. In a nuclear reactor, the reaction is controlled, while in nuclear bombs, the reaction is uncontrolled.
3. In a nuclear reactor, all operating reactors are 'critical', while there is no question of 'critically' in case of a nuclear bomb.
4. Nuclear reactors do not use moderators, while nuclear bombs use them.
Which of the above statements about operational principles of a nuclear reactor and a nuclear bomb is/are correct?
Superman is flying over the home krypton. Krypton is spherical in shape. It is in Pune city, which is situated on the equator. It is now facing towards the North Pole. He crosses the equator and flies to his left and reaches Mumbai, which is just opposite the equator of Pune city. He decides to fly to the South Pole, but he stops in Delhi on half way. What are the measurements of the following angles, considering the center of the krypton as a reference point? 1. Pune-Center-Delhi 2. Pune-Center-Mumbai 3. Mumbai-Center-Delhi
Correct answer for the given blank out of the four alternatives.
The main failings were of conception and a political willingness to settle _________ easy options. _______________ the expansive declarationsof the need "to maintain effective security of all nuclear materials, _______________ includes nuclear materials used in nuclear weapons”, thesummits narrowed their _______________ to civilian holdings __________________ non­nuclear weapon states.
_______________ includes nuclear materials used in nuclear weapons”
The nuclear activity occurring in the radioisotope H3 is?
The nuclear activity occurring in the radioisotope Carbon 14 is?
The nuclear activity occurring in the radioisotope Xenon 135 is?
The nuclear activity occurring in the radioisotope Strontium 90 is?
The nuclear activity occurring in the radioisotope Barium 139 is?
The nuclear activity occurring in the radioisotope Radium 223 is?