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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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Which of the following is Schiff's reagent?
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Ethyl methyl ketone can be reduced to n-butane by which of the following reactions?
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The following structure represents the polymer:
\[\begin{array}{cc}
\ce{[-C-CH2-NH-C-(-CH2)5 NH -]_{{n}}}\\
\phantom{}||\phantom{.............}||\phantom{................}\\
\phantom{}\ce{O}\phantom{.............}\ce{O}\phantom{................}
\end{array}\]
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____________ states that equal volumes of all gases under identical conditions of temperature and pressure contain equal number of molecules.
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An element has a bee structure with cell edge of 288 pm. The density of element is 7.2 g cm-3. What is the atomic mass of an element?
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Identify the INCORRECT reaction.
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Identify A in the following reaction.
\[\ce{A + CH3MgBr ->[Ether] complex ->[H3O+] (CH3)3C - OH}\]
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Which among the following polymers is obtained from styrene and 1-3-butadiene?
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What is standard N ≡ N bond enthalpy from following reaction,
\[\ce{N2_{(g)} + 3H2_{(g)} -> 2NH3_{(g)}; \Delta H^0 = - 83 kJ}\]
\[\ce{ΔH^0_{(H-H)}}\] = 435 kJ; \[\ce{ΔH^0_{(N-H)}}\] = 389 kJ
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Which among the following polymers is used for making handles of cooker?
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Calculate the potential of hydrogen electrode at 25°C:
Pt, H2 (1 atm) | H+ (0.1 M)
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For which of the following ∆U = ∆H?
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Which of the following gives red precipitate with Fehling's solution?
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