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Blood may be purified by ______.
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Van Arkel's method of purification of metals involves converting the metal to a ______.
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Identify the colloidal molecule containing hydrophilic head and hydrophobic tail within it.
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What is the pH of a 2.6 × 10-8 MH+ ion solution? (log 2.6 = 0.4150)
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In which among the following solids, Schottky defect is not observed?
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Calculate Standard cell potential for a cell having following reaction, \[\ce{2Al(s) + 3Ni^{2+} -> 2Al^{3+} + 3Ni(s)}\]
`("E"_"Ni"^circ = - 0.25 "V" and "E"_"Al"^circ = 1.66 "V")`
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Which of the following reactions is used to prepare aryl fluorides from diazonium salts and fluoroboric acid?
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Starch is an example of which of the following type of colloid?
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A sample of air turns lime water milky and also turns acidified potassium dichromate green in aqueous solution has low pH. This is due to the presence of pollutants.
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Ethers when dissolved in cold concentrated sulphuric acid forms ______.
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Identify positively charged sol from following.
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A buffer solution is prepared in which the concentration of NH3 is 0.30 M and the concentration of \[\ce{NH^+_4}\] is 0.20 M. If the equilibrium constant, Kb tor NH3 equals 1.8 × 10-5, what is the pH of the solution?
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Identify the correct decreasing order of precipitation power of flocculating ion added, from following.
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When electrons are trapped into the crystal in anion vacancy, the defect is known as ______.
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Aldol condensation between which of the following compounds followed by dehydration gives 4-Methylpent-3-en-2-one?
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Which of the following is used as a substitute for wool?
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Benzaldehyde gives all tests positive EXCEPT ____________.
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The product formed after reaction between benzaldehyde and methyl magnesium iodide followed by acid hydrolysis is ____________.
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The standard enthalpy of formation of ammonia is −46.0 kJ mol−1. The enthalpy change for the reaction:
\[\ce{2NH3_{(g)} -> 2N2_{(g)} + 3H2_{(g)}}\] is ____________.
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NH4CN is a salt of ____________.
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