Ncert Solutions Chemistry Class 12th

Given below are two statements.

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There is no mirror image of each other, having some configuration.

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Identify the major products A and B for the below given reaction sequence.

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Kindly consider the following figure

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Among the following marked proton of which compound shows lowest pK_a value?

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Kindly consider the following figure

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Compound 'A' undergoes following sequence of reactions to give compound 'B'. The correct structure and chirality of compound 'B' is

[where Et is -C₂H₅]

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Choose the correct option for the following reactions.

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Kindly consider the following figure

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Correct structure of $γ - m e t h y l c y c l o h e x a n e$ carbaldehyde is

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Match List-I with List-II

Choose the correct answer from the options given below

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Kindly consider the following figure

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Which of the following 3d- metal ion will give the lowest enthalpy of hydration $(Δ_{h y d} H)$ when dissolved in water?

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Following are the $Δ H °$ hydration of given ions

Cr²⁺ - 1926 KJ/mole

Mn²⁺ - 1860 KJ/mole

Fe²⁺ - 2000 KJ/mole

Co²⁺ - 2078 KJ/mole

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When borax is heated with CoO on a platinum loop, blue coloured bead formed is largely due to

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Cobalt (II) meta borate is a blue colour of Bead.

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Portland cement contains 'X' to enhance the setting time. What is 'X'?

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