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Engineering Chemistry · all questions

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The reagents required for the synthesis of cyclic phosphazene N4P4Cl8 are

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Which of the following statements is/are true for X?
i. X is not isoelectronic with benzene.
ii. X undergoes addition reaction with HCI.
iii. Electrophilic substitution reaction on X is much faster than that of benzene.
iv. X undergoes polymerization at 90°C

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The overall charge present on the cyclic silicate anion [Si6O18]n- is

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Pyroxenes are class of silicate minerals, which exhibit a polymeric chain structure, as shown below
S-Block and P-Block Elements mcq question image
Its simplest repeating unit is

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Using the Wade rule, the structure of B10C2H12 can be predicted. The structure and the number of isomers of B10C2H12 respectively, are

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According to Wade's rule, the structures of B10C2H12 and [B9C2H11]2- respectively are

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White phosphorus, P4 belongs to the

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Match the silicate minerals (Column I) with their compositions (Column II) and order of hardness (Column III)
Column I Column II Column III
P. Talc U. KAl2AlSi3O10(OH)2 X. High
Q. Muscovite V. Mg3Si4O10(OH)2 Y. Low
R. Margarite W. CaAl2AlSi3O10(OH)2 Z. Intermediate

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