JEE MAINS PRACTICE · Chemistry
p Block Elements (Group 13 & 14)
303 practice questions for JEE Mains Practice — 217 easy · 84 medium · 2 hard. Every question is graded instantly with a step-by-step solution when you miss it.
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MCQ
Which of the following elements is in allotopic form in fullerene?
Numerical
Total number of $2 c-2 e^{-}$and $3 c-3 e^{-}$bonds are present in diborane is___
MCQ
Diborane on reaction with olefins forms :
MCQ
Ferric alum has the composition $\left(\mathrm{NH}_4\right)_2 \mathrm{SO}_4 \cdot \mathrm{Fe}_2\left(\mathrm{SO}_4\right)_3 \cdot x \mathrm{H}_2 \mathrm{O}$ The value of $x$ is
MCQ
$\mathrm{CO}_2$ is a gas, while $\mathrm{SiO}_2$ is a solid, but both are
MCQ
Which of the following anions is present in the chain structure of silicates?
MCQ
The relative Lewis acid character of boron trihalides is the order
MCQ
Anhydrous $\mathrm{AlCl}_3$ fume in air due to
MCQ
Among boron halides, which is the strongest Lewis is acid?
MCQ
$\mathrm{SiF}_4$ gets hydrolysed giving
MCQ
Thermodynamically, in which form of carbon is the most stable?
MCQ
Which is not true about borax?