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USHA PUBLICATION-PREVIOUS YEAR QUESTION 2016-PREVIOUS YEAR QUESTION
- Why hydrogen sulphide cannot be dried by conc. H2SO4?
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- Represent the cell and calculate the Standard e.m.f. of the cell havin...
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- The aqueous solution of which amongst the following is the most acidic...
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- State the Law of mass action and explain any two significance of equil...
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- How does common ion effect help in the preparation of pure NaCl from a...
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- "Direct iodination of benzene is difficult." Explain. Suggest an alter...
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- Write the structural formulae of the three derivatives of monocarboxyl...
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- Equivalent conductance at infinite dilution of NH4CI, NaOH and NaCl ar...
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- What is a Buffer solution? Derive Hendersen's equation for calculation...
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- The half-life of a radioactive element is 69.3 days. Find out the time...
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- The half - life of a radioactive element is 69.3 days.Find out the tim...
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- What is Diazo reaction ? Write the structure of the product of this re...
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- How is acetaldehyde prepared from acetylchloride?
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- How does acetaldehyde react with Tollen's reagent
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- How does acetaldehyde react with Phenyl hydrazine ?
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- Arrange the order of reactivity of the following compounds towards nuc...
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- Describe the laboratory method of preparation of sulphur dioxide. How ...
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- Define transition elements. Discuss their followinng characteristic pr...
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- Define specific, equivalent and molar conductance. Write their units. ...
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- Write notes on: Hess's law of constant heat of summation.
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