Identify the wrong pair (1) Tarapur - Heavy Water Factory (2)Kalpakam – Reactor Research Centre (3) Trombay - Dhruva Nuclear Reactor (4) Thumba – Equatorial Launch Centre​

Arrange the following words as per order in the dictionary: 1. Centre 2. Center 3. Central 4. Centrum

Which one of the following is not needed in a nuclear fission reactor ? (1) Moderator (2) Coolant (3) Accelerator (4) Control device

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?

Match the technology in column A to its related scientific principle in column B A Technology B-Scientific Principle 1) Steam engine a) Faraday's laws 2) Nuclear Reactor b)Thermodynamic laws 3) Computer c) Nuclear Fission 4) Electric generation d) Digital logic