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What is vulcanization The process of vulcanization was discovered by Charles Good Year in 1839. He found that when natural rubber is heated with sulphur, its tensile strength,
What is happen whenever H2SO4+HNO3 adding to the phenol.give the reaction Ans) Phenol + HNO3(in prescence of sulphuric acid) --> 2-nitrophenol + 4-nitrophenol.
Q. Objectives of coordination compounds? Define the terms coordination compounds, coordination number. ligand and oxidation state, Describe IUPAC rules for naming coor
Q. Explain Le Chtelier's Principle Ans. Consider the equilibrium reaction of: A + B -> C + D The forward reaction occurs when A and B combine to form C and D: A +
why is the reaction mixture does not have 50% reactants and 50% products?
Explain about the Defect breakdown It is because of cracks and pores at the surface. Moisture from atmosphere can collect on the surface and result in breakdown. Glazing is
The number of electrons in the valence shell of calcium is: (1) 6 (2) 8 (3) 2 (4)4 Ans: 2
Aufbau principle is obeyed in which of the following electronic configurations: (1) 1s 2 2s 2 2p 6 (2) 1s 2 3p 6 3s 2 (3) 1s 2 3s 2 3p 6
When an electron jumps from L to K shell: (1) Energy is absorbed (2) Energy is released (3) Energy is sometimes absorbed and sometimes released (4) Energy is nei
why dipole moment of CH3CL is more than CH3F
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