S Block And P Block Elements MCQs with Explanations

XeF6 and AsF3 is the correct answer to “The reaction of solid XeF 2 with AsF 5 in 1 : 1 ratio affords”. This question is standard in competitive examination syllabi for S Block And P Block Elements.

two is the correct answer to “The number of hydroxyl (OH) groups present in phosphorus acid is”. This question is standard in competitive examination syllabi for S Block And P Block Elements.

B3N3H6 is the correct answer to “The reaction of ammonium chloride with BCl 3 at 140°C followed NaBH 4 gives product X. The formula of X is”. This question is standard in competitive examination syllabi for S Block And P Block Elements.

Mg < AI < S < P is the correct answer to “The first ionization potential of Mg, AI, P and S follows the order”. This question is standard in competitive examination syllabi for S Block And P Block Elements.

B2 is the correct answer to “Among the following diatomic molecules, the one shows EPR signal, is”. This question is standard in competitive examination syllabi for S Block And P Block Elements.

stronger 2p (B) - 2p (F) π-bonding is the correct answer to “The Lewis acidity of BF 3 is less than BCl 3 even though fluorine is more electronegative than chlorine. It is due to”. This question is standard in competitive examination syllabi for S Block And P Block Elements.

B12$${\text{H}}_{12}^{2 - }$$ is the correct answer to “Which one of the following will show closo structure”. This question is standard in competitive examination syllabi for S Block And P Block Elements.

closo, nido, arachno is the correct answer to “The correct classification of [B 5 H 5 ] 2- , B 5 H 9 and B 5 H 11 respectively is”. This question is standard in competitive examination syllabi for S Block And P Block Elements.

BBr3 > BCl3 > BF3 is the correct answer to “The order of acidity in boron trihalides is”. This question is standard in competitive examination syllabi for S Block And P Block Elements.

BCl3, SiCl4, PCl5 is the correct answer to “Among the following, the group of molecules that undergoes rapid hydrolysis is”. This question is standard in competitive examination syllabi for S Block And P Block Elements.

asbestos is the correct answer to “Mg 6 Si 4 O 10 (OH) 8 is commercially known as”. This question is standard in competitive examination syllabi for S Block And P Block Elements.

BF3 < BCl3 < BBr3 is the correct answer to “The Lewis acid character of BF 3 , BCl 3 and BBr 3 follows the order”. This question is standard in competitive examination syllabi for S Block And P Block Elements.

[B6H12] is the correct answer to “Which of the following is an arachno borane”. This question is standard in competitive examination syllabi for S Block And P Block Elements.

NH4CI and BCl3 and NaBH4 is the correct answer to “Using chlorobenzene as solvent, the reagents needed for an efficient synthesis of borazine are”. This question is standard in competitive examination syllabi for S Block And P Block Elements.

CO is a soft base and BH3 and BF3 are soft and hard acids respectively is the correct answer to “BH 3 $$ \cdot $$ CO is more stable than BF 3 $$ \cdot $$ CO because”. This question is standard in competitive examination syllabi for S Block And P Block Elements.

13 is the correct answer to “The number of 'framework electron pairs' present in the borane cluster [B 12 H 12 ] 2- is”. This question is standard in competitive examination syllabi for S Block And P Block Elements.

cone H3PO4 is the correct answer to “Triple superphosphate is made by treating phosphate rock with”. This question is standard in competitive examination syllabi for S Block And P Block Elements.

3 is the correct answer to “The most populated rotational state for HCl (B = 8.5 cm -1 ) at 300 K is”. This question is standard in competitive examination syllabi for S Block And P Block Elements.

hydrolysis of XeF6 in basic medium is the correct answer to “The perxenate ion Xe$${\text{O}}_4^{4 - }$$ can be prepared by”. This question is standard in competitive examination syllabi for S Block And P Block Elements.

cyclic silicate is the correct answer to “BaTi[Si 3 O 9 ] is a class of”. This question is standard in competitive examination syllabi for S Block And P Block Elements.

PCl5 and NH4Cl is the correct answer to “The reagents required for the synthesis of cyclic phosphazene N 4 P 4 Cl 8 are”. This question is standard in competitive examination syllabi for S Block And P Block Elements.

ii only is the correct answer to “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”. This question is standard in competitive examination syllabi for S Block And P Block Elements.

12 is the correct answer to “The overall charge present on the cyclic silicate anion [Si 6 O 18 ] n- is”. This question is standard in competitive examination syllabi for S Block And P Block Elements.

[SiO3]2- is the correct answer to “Pyroxenes are class of silicate minerals, which exhibit a polymeric chain structure, as shown below Its simplest repeating unit is”. This question is standard in competitive examination syllabi for S Block And P Block Elements.

closo and three is the correct answer to “Using the Wade rule, the structure of B 10 C 2 H 12 can be predicted. The structure and the number of isomers of B 10 C 2 H 12 respectively, are”. This question is standard in competitive examination syllabi for S Block And P Block Elements.

closo and nido is the correct answer to “According to Wade's rule, the structures of B 10 C 2 H 12 and [B 9 C 2 H 11 ] 2- respectively are”. This question is standard in competitive examination syllabi for S Block And P Block Elements.

nido system is the correct answer to “White phosphorus, P 4 belongs to the”. This question is standard in competitive examination syllabi for S Block And P Block Elements.

P, V, Y - Q, U, Z - R, W, X is the correct answer to “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. KAl 2 AlSi 3 O 10 (OH) 2 X. High Q. Muscovite V. Mg 3 Si 4 O 10 (OH) 2 Y. Low R. Margarite W. CaAl 2 AlSi 3 O 10 (OH) 2 Z. Intermediate”. This question is standard in competitive examination syllabi for S Block And P Block Elements.