Answer Posted / a.srinivasarao

mostely use KH2PO4&K2HPO4 in HPLC because pH neutral, stable in hplc columns and column life increase compare with other buffers  

Protactinium has a relatively short half-life for some of its isotopes. How does this characteristic impact its practical uses and research?

561

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In order to avoid the pyridine catalyst use in many synthesis which is harmfull to environment, which catalyst can be used....?

2386

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Discuss the role of Protactinium in accelerator-driven systems and its potential for transmutation of nuclear waste.

663

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Protactinium-231 decays to Uranium-235. How is this decay used in radiometric dating and the determination of geological ages?

552

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Why we are use glass viscometer, and what is calculation manual calculation formula as per USP. How many types of viscometre in glass type viscometer.

2324

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discuss the diffrent types of chromatography and their uses. In not more than 10 papers oc not less than 8 papers

2085

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seminal on pyrimidine

2174

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how we change 0.1N KmNo4 solution to 0.01N KmNo4 solution.

2019

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How to synthesize methylene bisthiocyanate using CH2Cl2 and NaSCN?

2973

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(CH2)n + nO2. ---->Co2 + nH2O + energy what is this mean with details

1621

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what is stero electronic factor.2 what is steric control factor and what is product control factor

2125

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Explain Thiele's structure for benzene. What is the difference between thiele's structure and modern structure (resonance hybrid) of benzene?

5201

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Actinium-227 has a long half-life and emits alpha particles. How can this property be harnessed in radiation detectors or other monitoring devices?

638

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Suppose we prepared pH buffer solution in lab.and calibrate against NIST solution, and same shall going to used upto 30 days. is it possible to stable pH and appearance? suggest?

1880

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how much time require for day to prepare the ongc exam for evarage student?

3022

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