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Alpha particle consists of a helium atom having 2 electrons, 2 protons and 2 neutrons. Radioactive decay (also known as nuclear decay or radioactivity) is the process by which an unstable atomic nucleus loses energy by emitting radiation, such as an alpha particle, beta particle with neutrino. A material containing such unstable nuclei is considered radioactive Hence, option A is correct.
If a four-letter meaningful English word is formed by using the 2nd, 4th, 7th and 9th letters (from the left end) of the word ‘STRAWBERRY’ then whic...
If it was Sunday on 8th December 1998, then what will be the day on the 25 th July, 1999?
If it is possible to form a meaningful English word by using the 3rd, 5th, 6th, and 7th letter (from the lef...
Unscramble the following letters to frame a meaningful words, then find out the correct numerical position of the letters:
N T F �...
A group of alphabets are given with each being assigned a number. These have to be unscrambled into a meaningful word and correct the order of letters m...
If it is possible to make a meaningful English word from 2nd, 4th, 6th and 8th letter of the word "AFFLUENT...
If it is possible to make a meaningful English word from the 2nd, 5th, 6th and 8th letter of the word ‘FR...
3 : 12 :: 6 : ?
A number has been denoted to each of the given letters. Select the option from the following four possible arrangements of these numbers that forms a m...