Chemical Bonding PYQs Set 12 (PDF)

Set 12 of 19 · Questions 331-360 of 568

In the print window choose “Save as PDF”. The file prints without a web address or date line.

Mere Teacher · Previous Year Questions JEE Main Chemistry · Chemical Bonding · Set 12 (Q331-360)
Scan or visit mereteacher.com for free PYQ practice, timed CBT tests, step-by-step solutions and BroBot AI. Answers and solutions are free with a sign-up.
331. $The overlapping of orbitals in benzene is of the type$ (1) $s p^{2} - s p^{2}$ (2) $s p^{3} - s p^{3}$ (3) $sp - sp$ (4) $p - p$ 332. $Oxidation number of potassium in K_{2} O, K_{2} O_{2} & K O_{2} respectively is$ (1) $+1, +1, +1$ (2) $+1, +2, +4$ (3) $+1, +2, +2$ (4) $+1, +4,+2$ 333. $The intermolecular potential energy for the molecules A, B, C and D given below suggests that:$ (1) $A-B has the stiffest bond$ (2) $A-D has the shortest bond length$ (3) $A-A has the largest bond enthalpy$ (4) $D is more electronegative than other atoms$ 334. $Identify the option in which the molecules are arranged in the correct order of their dipole moments.$ (1) $CO_{2} < H_{2} O < H_{2} S$ (2) $HF < HCl < HBr$ (3) $BF_{3} < NF_{3} < NH_{3}$ (4) $CH_{4} < CHCl_{3} < CCl_{4}$ 335. $The hybridization of atomic orbitals of nitrogen in NO_{2}^{+}, NO_{3}^{-} and NH_{4}^{+} are :$ (1) $sp, s p^{3} and s p^{2} respectively$ (2) $sp, s p^{2} and s p^{3} respectively$ (3) $s p^{2}, sp and s p^{3} respectively$ (4) $s p^{2}, s p^{3} and sp respectively$ 336. $Identify the molecule in which the arrangement of electron pairs around the central atom is octahedral and shape is not octahedral.$ (1) $SF_{6}$ (2) $XeF_{6}$ (3) $BrF_{5}$ (4) $XeO_{2} F_{4}$ 337. $H_{2} O is dipolar, whereas B e F_{2} is not. It is because$ (1) $the electronegativity of F is greater than that of O$ (2) $H_{2} O involves hydrogen bonding whereas B e F_{2} is a discrete molecule$ (3) $H_{2} O is linear and B e F_{2} is angular$ (4) $H_{2} O is angular and B e F_{2} is linear.$ 338. $How many bridging oxygen atoms are present in P4O10?$ (1) $6$ (2) $4$ (3) $2$ (4) $5$ 339. $Given below are two statements : Statement I: S O_{2} and H_{2} O both possess V-shaped structure Statement II: The bond angle of S O_{2} is less than that of H_{2} O. In the light of the above statements, choose the most appropriate answer from the options given below:$ (1) $Both Statement I and Statement II are incorrect$ (2) $Both Statement I and Statement II are correct$ (3) $Statement I is incorrect but Statement II is correct$ (4) $Statement I is correct but Statement II is incorrect$ 340. $Given below are two statements : Statement (I) : A π bonding MO has lower electron density above and below the inter-nuclear asix. Statement (II) : The π^{*} antibonding MO has a node between the nuclei. In the light of the above statements, choose the most appropriate answer from the options given below:$ (1) $Both Statement I and Statement II are false$ (2) $Both Statement I and Statement II are true$ (3) $Statement I is false but Statement II is true$ (4) $Statement I is true but Statement II is false$ 341. $The correct statement among the following is :$ (1) $SiH33Nis planar and less basic than (CH_{3})_{3} N .$ (2) $(SiH_{3})_{3} N is pyramidal and more basic than (CH_{3})_{3} N .$ (3) $(SiH_{3})_{3} is pyramidal and less basic than (CH_{3})_{3} .$ (4) $(SiH_{3})_{3} is planar and more basic than (CH_{3})_{3} .$ 342. $Intramolecular hydrogen bonding is formed in$ (1) $H_{2} O$ (2) $salicylaldehyde$ (3) $NH_{3}$ (4) $benzophenone.$ 343. $Which of the following is not a correct statement?$ (1) $Multiple bonds are always shorter than corresponding single bonds.$ (2) $The electron‐deficient molecules can act as Lewis acids.$ (3) $The canonical structures have no real existence.$ (4) $Every A B_{5} molecule does in fact have square pyramid structure.$ 344. $Given below are two statements : one is labelled as Assertion A and the other is labelled as Reason R. Assertion A : Dipole-dipole interactions are the only non-covalent interactions, resulting in hydrogen bond formation Reason R : Fluorine is the most electronegative element and hydrogen bonds in HF are symmetrical In thelight of the above statements, choose the most appropriate answer from the options given below :$ (1) $A is false but R is true$ (2) $Both A and R are true and R is the correct explanation of A$ (3) $A is true but R is false$ (4) $Both A and R are true and R is not the correct explanation of A$ 345. $Cl F_{5} at room temperature is a$ (1) $Colourless liquid with trigonal bipyramidal geometry$ (2) $Colourless gas with square pyramidal geometry$ (3) $Colourless gas with trigonal bipyramidal geometry$ (4) $Colourless liquid with square pyramidal geometry$ 346. $Match List-I with List-II. List I (Molecule) (A) N e_{2} (B) N_{2} (C) F_{2} (D) O_{2} List II (Bond Order) (i) 1 (ii) 2 (iii) 0 (iv) 3 Choose the correct answer from the options given below:$ (1) $(A)-(iii), (B)-(iv), (C)-(i), (D)-(ii)$ (2) $(A)-(i), (B)-(ii), (C)- (iii), (D)-(iv)$ (3) $(A)-(ii), (B)-(i), (C)- (iv), (D)-(i)$ (4) $(A)-(iv), (B)-(iii), (C)- (ii), (D)-(i)$ 347. $Bonding in which of the following diatomic molecule(s) become(s) stronger, on the basis of MO Theory, by removal of an electron ?$ (1) $NO$ (2) $N_{2}$ (3) $O_{2}$ (4) $C_{2}$ 348. $Given below are two statements: Statement I: S b C l_{5} is more covalent than S b C l_{3} Statement II: The higher oxides of halogens also tend to be more stable than the lower ones. In the light of the above statements, choose the most appropriate answer from the options given below.$ (1) $Statement I is incorrect but statement II is correct$ (2) $Both Statement I and Statement II are incorrect$ (3) $Both Statement I and Statement II are correct$ (4) $Statement I is correct but statement II is incorrect$ 349. $Which of the following molecule does not possess a permanent dipole moment?$ (1) $C S_{2}$ (2) $S O_{3}$ (3) $H_{2} S$ (4) $S O_{2}$ 350. $Given below are statements about some molecules/ions.Identify the CORRECT statements.(A) The dipole moment value of NF_{3} is higher than that of NH_{3} .(B) The dipole moment value of BeH_{2} is zero.(C) The bond order of O_{2}^{2 -} and F_{2} is same.(D) The formal charge on the central oxygen atom of ozone is -1 .(E) In NO_{2}, all the three atoms satisfy the octet rule, hence it is very stable. Choose the correct answer from the options given below:$ (1) $(A), (C) & (D) Only$ (2) $(B), (C) & (D) Only$ (3) $(B) & (C) Only$ (4) $(A), (B), (C) (D) & (E)$ 351. $Equilateral shape has$ (1) $s p hybridisation$ (2) $s p^{2} hybridisation$ (3) $s p^{3} hybridisation$ (4) $d s p^{3} hybridisation.$ 352. $Which of the following is diamagnetic?$ (1) $H_{2}^{+}$ (2) $O_{2}$ (3) $Li_{2}$ (4) $He_{2}^{+}$ 353. $During the formation of a chemical bond$ (1) $electron-electron repulsion becomes more than the nucleus-electron attraction$ (2) $energy of the system does not change$ (3) $energy increases$ (4) $energy decreases.$ 354. $Which of the following is diamagnetic?$ (1) $H_{2}^{+}$ (2) $He_{2}^{+}$ (3) $O_{2}$ (4) $N_{2}$ 355. $Given below are two statements: Statement I: The number of species among BF_{4}^{-}, SiF_{4}, XeF_{4} and SF_{4}, that have unequal E - F bond lengths is two. Here, E is the central atom. Statement II: Among O_{2}^{-}, O_{2}^{2 -}, F_{2} and O_{2}^{+}, O_{2}^{-} has the highest bond order. In the light of the above statements, choose the correct answer from the options given below$ (1) $Both Statement I and Statement II are false$ (2) $Statement I is true but Statement II is false$ (3) $Statement I is false but Statement II is true$ (4) $Both Statement I and Statement II are true$ 356. $The number of species from the following which have square pyramidal structure is________P F_{5}, B r F_{4}^{-} I F_{5}, B r F_{5}, X e O F_{4}, I C l_{4}^{-}$ 357. $The number of bent-shaped molecule/s from the following is______N_{3}^{-}, N O_{2}^{-}, I_{3}^{-}, O_{3}, S O_{2}$ 358. $AB_{3} is an interhalogen T-shaped molecule. The number of lone pairs of electrons on A is ____. (Integer answer)$ 359. $The number of molecules from the following which contain only two lone pair of electrons is_____________H_{2} O, N_{2},CO, X e F_{4}, N H_{3},NO, C O_{2}, F_{2}$ 360. $The number of lone pairs of electrons on the central I atom in I_{3}^{-} is ___$