p-Block Elements

Kernite is a naturally occurring mineral of which element?

The industrial process of coating iron surfaces with Aluminium to prevent corrosion is known as:

When Boron is treated with hot and concentrated Nitric acid, the final oxidation product is:

In which of the following states does Aluminium chloride predominantly exist as a dimer ($Al_2Cl_6$)?

The atomic volume of the elements in Group 13:

Which Group 13 halide is used as a Friedel-Crafts catalyst?

In the Thermite process, Aluminum acts as a:

Unlike other boron trihalides ($BCl_3, BBr_3, BI_3$) which undergo complete hydrolysis to form orthoboric acid and the respective halogen acid, boron trifluoride ($BF_3$) behaves differently. The $HF$ produced in the initial reaction reacts with unreacted $BF_3$ to form a stable complex ion. Based on the reaction sequence provided in the diagram, which equation correctly represents the overall hydrolysis of $BF_3$?

The tendency of Group 13 elements to form complexes decreases as we move down the group. Which element forms the most stable complexes?

In the electrolysis of Alumina (Hall-Héroult process), Cryolite ($Na_3AlF_6$) is added to:

Which of the following is an example of a 3D network silicate?

What is the geometry of the $CO_2$ molecule?

Which of the following elements can form a stable $+4$ oxidation state hydride with the formula $MH_4$?

The hybridization of the central Carbon atom in a Carbon dioxide ($CO_2$) molecule is:

Which among the following is the most electronegative element of Group 14?

When carbon dioxide is passed through lime water for a long time, the initial milkiness disappears. This is due to the formation of:

The stability of the dihalides of Group 14 elements follows the order:

When silica is treated with elemental magnesium and then with dilute $HCl$, it yields a gas that spontaneously catches fire in air. Identify the gas.

The oxidation of concentrated $HCl$ to $Cl_2$ by $PbO_2$ involves the reduction of Lead. What is the change in the oxidation state of Lead?

Which of the following species is paramagentic?

Fullerenes are also colloquially known as:

Which carbon form is obtained by heating sugar in the absence of air or by the action of concentrated $H_2SO_4$?

Which of the following methods is used to produce $C_{60}$ in the laboratory?

Which allotrope of carbon consists of discrete molecules and not a giant network of atoms?

Fullerenes differ from graphite in their bonding because they contain:

Which allotrope of carbon is the primary component of 'Carbon Black' used in the rubber industry as a reinforcing filler?

The bond length of $C-C$ in diamond is $154\text{ pm}$. What is the bond length of $C-C$ in a typical alkane?

The 'Buckyball' $C_{60}$ belongs to which symmetry group?

Which of the following allotropes of carbon is used as a moderator in nuclear reactors?

The Euler's formula for a convex polyhedron ($V - E + F = 2$) can be applied to fullerenes. For $C_{60}$, if each carbon atom is a vertex ($V=60$) and each vertex has a degree of 3, how many edges ($E$) are there?

What is the result of the hydrolysis of Trimethylchlorosilane, $(CH_{3})_{3}SiCl$?

In the silicate structure, each Silicon atom is surrounded by how many Oxygen atoms?

Which of the following chemicals is used to etch glass?

The primary difference between the structure of $CO_{2}$ and $SiO_{2}$ is that:

Silicon dioxide ($SiO_{2}$) is a versatile starting material for producing various industrially important compounds. When silica is reacted with excess coke in an electric furnace at temperatures around $2500 K$, it produces a compound 'X' and a gas 'Y'. Compound 'X' is extremely hard and is widely used as an abrasive under the name Carborundum. Identify 'X' and its structural classification from the reaction sequence provided below.

In the production of silicone rubber, which process is used to provide strength and elasticity to the silicone chains?

Which of the following describes the bond between Silicon and Oxygen in $SiO_{2}$?

In a pyrosilicate ion ($Si_2O_7^{6-}$), what is the $Si-O-Si$ bond angle approximately?

Which property of Zeolites allows them to be used in 'shape-selective' catalysis?

What is formed when silicon is heated with methyl chloride in the presence of copper at $570$ K?