Chemical Bonding PYQs Set 12 (PDF)

Set 12 of 17 · Questions 331-360 of 508

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

Mere Teacher · Previous Year Questions NEET 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. $The compound which does not exist is$ (1) $N a O_{2}$ (2) $B e H_{2}$ (3) $P b E t_{4}$ (4) $(N H_{4})_{2} B e F_{4}$ 332. $Hydrogen bond is strongest in$ (1) $S - H \dots O$ (2) $O - H \dots S$ (3) $F - H \dots F$ (4) $O - H \dots N$ 333. $Match List I with List II List-I (Molecule) A. Fe_{4} (Fe (CN)_{6})_{3} \cdot xH_{2} O B. (Fe (CN)_{5} NOS^{4 - atho}) C. [Fe (SCN)]^{2 +} D. (NH_{4})_{3} PO_{4} \cdot 12 MoO_{3} List-II (Shape) I. Violet II. Blood Red A III. Prussian Blue IV. Yellow Choose the correct answer from the options given below:$ (1) $A-III, B-I, C-II, D-IV$ (2) $A-I, B-II, C-III, D-IV$ (3) $A-IV, B-I, C-II, D-III$ (4) $A-II, B-III, C-IV, D-I$ 334. $Statement (I) : C O_{2} has no dipole moment, whereas S O_{2} and H_{2} O have dipole moment. Statement (II) : S n C l_{2} is ionic, whereas S n C l_{4} is covalent.$ (1) $Both (I) and (II) are not correct$ (2) $(I) is correct but (II) is not correct$ (3) $Both (I) and (II) are correct$ (4) $(I) is not correct but (II) is correct$ 335. $Given below are two statements. Statement I: The dipole moment of C H_{3} - C H = C H - C H = O is greater than C H_{3} - C H_{2} - C H_{2} - C H = O Statement II: C_{1} - C_{2} bond length of C H_{3} - C H = C H - C H = O is greater than C_{1} - C_{2} bond length of C H_{3} - C H_{2} - C H_{2} - C H = O (C1 is the carbonyl carbon, C2 the next carbon) In the light of the above statements, choose the correct answer from the options given below:$ (1) $Both Statement I and Statement II are true$ (2) $Statement I is true but Statement II is false$ (3) $Statement I is false but Statement II is true$ (4) $Both Statement I and Statement II are false$ 336. $According to molecular orbital theory, the species among the following that does not exist is:$ (1) $H e_{2}^{-}$ (2) $H e_{2_{2}}^{+}$ (3) $O_{2}^{2 -}$ (4) $B e_{2}$ 337. $The correct statement/s about Hydrogen bonding is/are A. Hydrogen bonding exists when H is covalently bonded to the highly electro negative atom. B. Intermolecular H bonding is present in o-nitro phenol C. Intramolecular H bonding is present in HF . D. The magnitude of H bonding depends on the physical state of the compound. E. H-bonding has powerful effect on the structure and properties of compounds Choose the correct answer from the options given below:$ (1) $A, B, D only$ (2) $A, D, E only$ (3) $A only$ (4) $A, B, C only$ 338. $The oxide that shows magnetic property is:$ (1) $SiO_{2}$ (2) $Mn_{3} O_{4}$ (3) $Na_{2} O$ (4) $MgO$ 339. $The structure of I F_{7} is :$ (1) $square pyramid$ (2) $trigonal bipyramid$ (3) $octahedral$ (4) $pentagonal bipyramid$ 340. $Which is incorrect regarding S and P mixing (along Z -axis.)$ (1) $Nodal plane(s) present in ABMO$ (2) $Nodal plane is absent in BMO$ (3) $MO formed may have higher energy than parent AO$ (4) $MO formed are asymmetric$ 341. $Which among the following molecules is non polar?$ (1) $NH_{3}$ (2) $ICl$ (3) $HCl$ (4) $C_{6} H_{6}$ 342. $Which of the following statement is true with respect to H_{2} O, NH_{3} and CH_{4} ? A. The central atoms of all the molecules are sp^{3} hybridized. B. The H - O - H, H - N - H and H - C - H angles in the above molecules are 104.5^{\circ}, 107.5^{\circ} and 109.5^{\circ}, respectively. C. The increasing order of dipole moment is CH_{4} < NH_{3} < H_{2} O . D. Both H_{2} O and NH_{3} are Lewis acids and CH_{4} is a Lewis base. E. A solution of NH_{3} in H_{2} O is basic. In this solution NH_{3} and H_{2} O act as Lowry-Bronsted acid and base respectively. Choose the correct answer from the options given below:$ (1) $A, B and C Only$ (2) $A, D and E Only$ (3) $C, D and E Only$ (4) $A, B, C and E Only$ 343. $Which one of the following statements about water is$ (1) $Water can act both as an acid and as a base.$ (2) $There is extensive intramolecular hydrogen bonding in the condensed phase.$ (3) $Ice formed by heavy water sinks in normal water.$ (4) $Water is oxidized to oxygen during photosynthesis.$ 344. $The structure of IF7 is :$ (1) $square pyramid$ (2) $trigonal bipyramid$ (3) $octahedral$ (4) $pentagonal bipyramid$ 345. $Maximum bond angle at nitrogen is present in which of the following ?$ (1) $N O_{2}^{-}$ (2) $N O_{2}^{+}$ (3) $N O_{3}^{-}$ (4) $N O_{2}$ 346. $Bond order and magnetic nature of C N^{-} are respectively.$ (1) $3, diamagnetic$ (2) $3, paramagnetic$ (3) $2.5, paramagnetic$ (4) $2.5, diamagnetic$ 347. $In which of the following molecules/ions B F_{3}, N O_{2}^{-}, N H_{2}^{-} and H_{2} O, the central atom is s p^{2} hybridised?$ (1) $N H_{2}^{-} and H_{2} O$ (2) $N O_{2}^{-} and H_{2} O$ (3) $B F_{3} and N O_{2}^{-}$ (4) $N O_{2}^{-} and N H_{2}^{-}$ 348. $Given below are two statements : one is labelled as Assertion (A) and the other is labelled as Reason (R). Assertion (A) : NH3 and NF3 molecule have pyramidal shape with a lone pair of electrons on nitrogen atom.The resultant dipole moment of NH3 is greater than that of NF3. Reason (R) : In NH3, the orbital dipole due to lone pair is in the same direction as the resultant dipole moment of the N - H bonds. F is the most electronegative element. In the light of the above statements, choose the correct answer from the options given below :$ (1) $Both (A) and (R) are true and (R) is the correct explanation of (A)$ (2) $(A) is false but (R) is true$ (3) $Both (A) and (R) are true but (R) is NOT the correct explanation of (A)$ (4) $(A) is true but (R) is false$ 349. $In compound X, all the bond angles are exactly 10 9^{\circ} 2 8^{'}, X is$ (1) $chloromethane$ (2) $carbon tetrachloride$ (3) $iodoform$ (4) $chloroform.$ 350. $In which of the following pair both the species have s p^{3} hybridization?$ (1) $S i F_{4}, B e H_{2}$ (2) $N F_{3}, H_{2} O$ (3) $N F_{3}, B F_{3}$ (4) $H_{2} S, B F_{3}$ 351. $Four diatomic species are listed below. Identify the correct order in which the bond order is increasing in them:$ (1) $N O < O_{2}^{-} < C_{2}^{2}^{-} < H e_{2}^{+}$ (2) $O_{2}^{-} < N O < C_{2}^{2}^{-} < H e_{2}^{+}$ (3) $C_{2}^{2}^{-} < H e_{2}^{+} < O_{2}^{-} < N O$ (4) $H e_{2}^{+} < O_{2}^{-} < N O < C_{2}^{2}^{-}$ 352. $The species, having bond angles of 12 0^{o} is$ (1) $C l F_{3}$ (2) $N C l_{3}$ (3) $B C 1_{3}$ (4) $P H_{3}$ 353. $The linear molecule among the following is$ (1) $SnCl_{2}$ (2) $PbCl_{2}$ (3) $SO_{2}$ (4) $XeF_{2}$ 354. $The linear shape of CO_{2} is due to$ (1) $s p^{3} -hybridisation of carbon$ (2) $sp -hybridisation of carbon$ (3) $p π - d π bonding between carbon and oxygen$ (4) $s p^{2} -hybridisation of carbon$ 355. $Which of the following is electron‐deficient?$ (1) $(B H_{3})_{2}$ (2) $P H_{3}$ (3) $(C H_{3})_{2}$ (4) $(S i H_{3})_{2}$ 356. $Arrange the following in increasing order of their covalent character. (A) C a F_{2} (B) C a C l_{2} (C) C a B r_{2} (D) C a I_{2} Choose the correct answer from the options given below.$ (1) $B<A<C<D$ (2) $A<B<C<D$ (3) $A<B<D<C$ (4) $A<C<B<D$ 357. $In which of the following pairs the two species are not isostructural?$ (1) $CO_{3}^{2-} and NO_{3}^{-}$ (2) $PCl_{4}^{+} and S i C l_{4}$ (3) $P F_{5} and B r F_{5}$ (4) $AlF_{6}^{3-} and S F_{6}$ 358. $In which of the following molecules, maximum number of lone pairs is present on the central atom?$ (1) $NH_{3}$ (2) $H_{2} O$ (3) $CIF_{3}$ (4) $XeF_{2}$ 359. $Which one of the following statements is not correct for sigma‐ and pi‐bonds formed between two carbon atoms?$ (1) $Sigma‐bond is stronger than a pi‐bond.$ (2) $Bond energies of sigma‐ and pi‐bonds are of the order of 264 kJ/mol and 347 kJ/mol, respectively.$ (3) $Free rotation of atoms about a sigma‐bond is allowed but not in case of a pi‐bond.$ (4) $Sigma‐bond determines the direction between carbon atoms but a pi‐bond has no primary effect in this regard.$ 360. $The shape of X e O_{2} F_{2} molecule is$ (1) $trigonal bipyramidal$ (2) $square plannar$ (3) $tetrahedral$ (4) $see-saw$