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Q. Describe the Half -Life property of radioactive decay? Ans. The decay of a nucleus is a random event. It is impossible to predict which nucleus will decay and when.
(i) Assign appropriate reason for each of observations: (a) Anhydrous ALCI is used as a catalyst. (b) Phosphinic acid behaves as a monoprotic acid. (c) SF6 is not easily h
Fast reactions are those reactions that occur instantaneously. A fast reaction depends upon the reaction rates. These reactions are so fast that they occur as soon as the reactants
Which of the following is isoelectronic with carbon atom: (1) Na + (2) Al +3 (3) O 2- (4)N + Ans: N +
1,1-Dimethylcyclohexane is achiral, and therefore cannot be optically active.
What are the main sources of electrical resistance in a metal? The factors which affect electrical resistance of a metal are impurity, temperature and alloying. Free mean path o
Why is the total energy of a many-electron atom not equivalent to the sum of the orbital energies for every electron?
Draw the important resonance contributors for the benzenoium intermediate in the bromination of aniline and explain why ortho, para substitution predominates ?
Carbon has maximum catenation ability. The self-linkage of the atoms of elements to make long chains is known as catenation.
Q1. a). Using diagram, explain how fluorescence detector optical bench works (5 marks) (b). Explain the applications of mass spectrometric detector (LC/MS) in HPLC (5 mar
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