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Structures that are formed by shrinkage of nuclei includes

At a given time there are25% undecayed nuclei in a sample. After 10 second number of undecayed nuclei reduces to 12.5% . Then mean life of the nuclei will be about

Shrinkage allowance on pattern is provided to compensate for shrinkage when the

Consider the following statements :1. Masonry in rich cement mortar though having good strength with high shrinkage is much liable for surface cracks. 2. Lime mortar possesses poor workability and poo

If C is creep coefficient, f is original prestress in concrete, m is modular ratio, E is Young's modulus of steel and e is shrinkage strain, the combined effect of creep and shrinkage is

A process in which nuclei of a radioactive atom are split into smaller nuclei is known as

Study of properties and behavior of nuclei and particles within nuclei is called

Half lives of two radioactive substances are 20 and 40 minutes respectively. Initially samples were having equal number of nuclei. After 80 minutes ratio of the remaining numbers of A and B nuclei wil

A nucleus with A = 235 splits into two nuclei whose mass numbers are in the ratio 2 : 1. Ratio of heavier nuclei is

Structures of nuclei of three atoms A, B and C are given below: A has 90 protons and 146 neutrons B has 92 protons and 146 neutrons C has 90 protons and 148 neutrons Based on the above data, which of