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What are the major poisnous gases released during burning of the plastic substances????? Ans) It is high time that we start taking concrete steps in order to prevent pollution or
The filling of the table defined above leads to a natural division of the periodic table into blocks according to the outer electron configurations of atoms (see Fig. 2). All s blo
what is an acid
The value of the energy for the first excited state of hydrogen atom will be: (1) - 13.6 ev (2)- 3.40 eV (3) -1.51eV
how do i calculate the rate of advancement of a week electrolyte
Describe the principle and working of Mass spectrometry with suitable diagram along with its applications. Definition of Mass Spectrometry Show the principle and working
What is electron migration effects and mention their applications
If the velocity of hydrogen molecule is 5x 10 4 cm sec -1 then its de-Broglie wavelength is: (1) 2 Å (2) 4 Å (3) 8 Å (4)100 Å Ans: 4 Å
alloy formation
Calculate how much heat energy is required to raise the temperature of a cube of copper of side 2cm. from 300 to 320k. given: density=8933kg/m cube , atomic weight=63.55, cp=24j/k/
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