Chemistry
GATE CY topic:main-group-elements PYQs
Build your understanding with focused practice from past exam papers.
How to practice topic:main-group-elements
Attempt a question, record the concept and assumptions, then check the available answer. Rework mistakes after revising the relevant concepts. Topic tags can overlap; review the question context.
Questions 1–10 of 32. Imported answers require independent review unless marked reviewed.
Question 43
Open questionCYMCQ2 marksNeeds review
The structure of
is given below. Its
number is 
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Open questionCYMCQ1 markNeeds review
The phospazene compound that acts as a superbase is
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Open questionCYMCQ1 markNeeds review
The reaction for the synthesis of Me₂SiCl₂ through Rochow-Müller process is
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You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answerQuestion 22
Open questionCYMSQ1 markNeeds review
Under the conditions mentioned for each reaction, the reaction(s) that would give borazine (B₃N₃H₆) as the major product is/are
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Open questionCYNAT1 markNeeds review
Xe and F
in 1:1 molar ratio when mixed in a closed flask and kept in the sunlight for a day, gave white crystals of a compound Q. Two equivalents of Q on reaction with one equivalent of AsF
gave an ionic compound X
Y
with the cation having two Xe atoms. The total number of lone pairs present on the cation X
is _____ (in integer).Log in to check the answer
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Open questionCYMSQ2 marksNeeds review
The compound(s) having structure similar to that of B₂H₆ is/are
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You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answerQuestion 13
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The reaction of XeF₂ with HN(SO₂F)₂ at 273 K in CF₂Cl₂ solvent yields
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You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answerQuestion 36
Open questionCYMCQ2 marksNeeds review
Borax on treatment with NaOH and H₂O₂ forms X. The compound X on reaction with PhCN at 60 °C in methanol-water mixture gives Y as the major product. X and Y, respectively, are
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The number of shared corners of the constituent SiO₄ units in orthosilicate, pyrosilicate, cyclic silicate and sheet silicate, respectively, are
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You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answerQuestion 55
Open questionCYMSQ2 marksNeeds review
The correct statement(s) for XeF₂ is(are)
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