Chemical Bonding PYQs Set 13 (PDF)

Set 13 of 19 · Questions 361-390 of 568

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JEE Main Chemistry · Chemical Bonding · Set 13 (Q361-390)

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361.
Which structure is linear?
1. (1) $S O_{2}$
2. (2) $C O_{2}$
3. (3) $C O_{3}^{2 -}$
4. (4) $S O_{4}^{2 -}$
362.
Given below are two statements :
Statement I : The number of species among $SF_{4}, NH_{4}^{+}, (NiCl_{4})^{2 -}, XeF_{4}, (PtCl_{4})^{2 -}, SeF_{4}$ and $(Ni (CN)_{4})^{2 -}$ , that have tetrahedral geometry is 3 .
Statement II : In the set $(NO_{2}, BeH_{2}, BF_{3}, AlCl_{3})$ , all the molecules have incomplete octet around central atom.
In the light of the above statements, choose the correct answer from the options given below :
1. (1) $Statement I is true but Statement II is false$
2. (2) $Statement I is false but Statement II is true$
3. (3) $Both Statement I and Statement II are true$
4. (4) $Both Statement I and Statement II are false$
363.
Which of the following is least ionic?
1. (1) $BaCl_{2}$
2. (2) $AgCl$
3. (3) $KCl$
4. (4) $CoCl_{2}$
364.
The wave functions of $1 s$ - orbitals of two hydrogen atoms are $ψ_{A}$ and $ψ_{B} \cdot ψ_{A}$ and $ψ_{B}$ are linearly combined to form two molecular orbitals $(σ)$ and $(σ^{*})$ . Which of the following statements are correct?
I. $σ^{*}$ is equal to $(ψ_{A} - ψ_{B})$ .
II. In $σ$ -orbital, one nodal plane is present in between two nuclei.
III. The energy of $σ$ -orbital is lower than the energy of $σ^{*}$ -orbital.
1. (1) $I, II, III$
2. (2) $I, II only$
3. (3) $II, III only$
4. (4) $I, III only$
365.
$Match the LIST-I with LIST-II (Classification of molecules based on octet rule) (Example)$
$LIST-I$ $LIST-II$
$A. Molecules obeying octet rule$ $I. NO, NO_{2}$
$B. Molecules with incomplete octet$ $II.$
$BCl_{3}, AlCl_{3} C. Molecules with incomplete octet with odd electron III. H_{2} SO_{4}, PCl_{5} D. Molecules with expanded octet IV. CCl_{4}, CO_{2} Choose the correct answer from the options given below:$
1. (1) $A-IV, B-I, C-III, D-II$
2. (2) $A-IV, B-II, C-I, D-III$
3. (3) $A-II, B-IV, C-III, D-I$
4. (4) $A-III, B-II, C-I, D-IV$
366.
Given below are two statements:
Statement I : The correct order in terms of bond dissociation enthalpy is $Cl_{2} > Br_{2} > F_{2} > I_{2}$ .
Statement II: The correct trend in the covalent character of the metal halides is $(SnCl_{4} > SnCl_{2})$ ,
$(PbCl_{4} > PbCl_{2})$ and $(UF_{4} > UF_{6})$ .
In the light of the above statements, choose the correct answer from the options given below:
1. (1) $Statement I is false but Statement II is true$
2. (2) $Both Statement I and Statement II are false$
3. (3) $Statement I is true but Statement II is false$
4. (4) $Both Statement I and Statement II are true$
367.
The correct sequence of bond order is
1. (1) $O_{2}^{+} > O_{2}^{-} > O_{2} > O_{2}^{2 -}$
2. (2) $O_{2}^{+} > O_{2} > O_{2}^{-} > O_{2}^{2 -}$
3. (3) $O_{2}^{+} > O_{2} > O_{2}^{2 -} > O_{2}^{-}$
4. (4) $O_{2}^{+} > O_{2}^{2 -} > O_{2}^{-} > O_{2}$
368.
Given below are two statements:
Statement $I$ : $N (CH_{3})_{3}$ and $P (CH_{3})_{3}$ can act as ligands to form transition metal complexes.
Statement II: As $N$ and $P$ are from same group, the nature of bonding of $N (CH_{3})_{3}$ and $P (CH_{3})_{3}$ is always same with transition metals.
In the light of the above statements, choose the most appropriate answer from the options given below:
1. (1) $Statement I is correct but Statement II is incorrect.$
2. (2) $Statement I is incorrect but Statement II is correct.$
3. (3) $Both Statement I and Statement II are correct.$
4. (4) $Both Statement I and Statement II are incorrect.$
369.
The compound which does not exist is
1. (1) $N a O_{2}$
2. (2) $B e H_{2}$
3. (3) $P b E t_{4}$
4. (4) $(N H_{4})_{2} B e F_{4}$
370.
Hydrogen bond is strongest in
1. (1) $S - H \dots O$
2. (2) $O - H \dots S$
3. (3) $F - H \dots F$
4. (4) $O - H \dots N$
371.
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. (1) $A-III, B-I, C-II, D-IV$
2. (2) $A-I, B-II, C-III, D-IV$
3. (3) $A-IV, B-I, C-II, D-III$
4. (4) $A-II, B-III, C-IV, D-I$
372.
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. (1) $Both (I) and (II) are not correct$
2. (2) $(I) is correct but (II) is not correct$
3. (3) $Both (I) and (II) are correct$
4. (4) $(I) is not correct but (II) is correct$
373.
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. (1) $Both Statement I and Statement II are true$
2. (2) $Statement I is true but Statement II is false$
3. (3) $Statement I is false but Statement II is true$
4. (4) $Both Statement I and Statement II are false$
374.
According to molecular orbital theory, the species among the following that does not exist is:
1. (1) $H e_{2}^{-}$
2. (2) $H e_{2_{2}}^{+}$
3. (3) $O_{2}^{2 -}$
4. (4) $B e_{2}$
375.
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. (1) $A, B, D only$
2. (2) $A, D, E only$
3. (3) $A only$
4. (4) $A, B, C only$
376.
The crystalline form of borax has
1. (1) $tetranuclear [B_{4} O_{5} (OH)_{4}]^{2-} unit$
2. (2) $all boron atoms in the same plane$
3. (3) $equal number of s p^{2} and s p^{3} hybridized boron atoms$
4. (4) $one terminal hydroxide per boron atom$
377.
The oxide that shows magnetic property is:
1. (1) $SiO_{2}$
2. (2) $Mn_{3} O_{4}$
3. (3) $Na_{2} O$
4. (4) $MgO$
378.
The structure of $I F_{7}$ is :
1. (1) $square pyramid$
2. (2) $trigonal bipyramid$
3. (3) $octahedral$
4. (4) $pentagonal bipyramid$
379.
Which is incorrect regarding S and P mixing (along Z –axis.)
1. (1) $Nodal plane(s) present in ABMO$
2. (2) $Nodal plane is absent in BMO$
3. (3) $MO formed may have higher energy than parent AO$
4. (4) $MO formed are asymmetric$
380.
Which among the following molecules is non polar?
1. (1) $NH_{3}$
2. (2) $ICl$
3. (3) $HCl$
4. (4) $C_{6} H_{6}$
381.
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. (1) $A, B and C Only$
2. (2) $A, D and E Only$
3. (3) $C, D and E Only$
4. (4) $A, B, C and E Only$
382.
Which one of the following statements about water is
1. (1) $Water can act both as an acid and as a base.$
2. (2) $There is extensive intramolecular hydrogen bonding in the condensed phase.$
3. (3) $Ice formed by heavy water sinks in normal water.$
4. (4) $Water is oxidized to oxygen during photosynthesis.$
383.
The structure of IF7 is :
1. (1) $square pyramid$
2. (2) $trigonal bipyramid$
3. (3) $octahedral$
4. (4) $pentagonal bipyramid$
384.
Maximum bond angle at nitrogen is present in which of the following ?
1. (1) $N O_{2}^{-}$
2. (2) $N O_{2}^{+}$
3. (3) $N O_{3}^{-}$
4. (4) $N O_{2}$
385.
Bond order and magnetic nature of $C N^{-}$ are respectively.
1. (1) $3, diamagnetic$
2. (2) $3, paramagnetic$
3. (3) $2.5, paramagnetic$
4. (4) $2.5, diamagnetic$
386.
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. (1) $N H_{2}^{-} and H_{2} O$
2. (2) $N O_{2}^{-} and H_{2} O$
3. (3) $B F_{3} and N O_{2}^{-}$
4. (4) $N O_{2}^{-} and N H_{2}^{-}$
387.
$The number of molecule(s) or ion(s) from the following having non-planar structure is______. N O_{3}^{-}, H_{2} O_{2}, B F_{3}, PC l_{3}, Xe F_{4}, S F_{4}, Xe O_{3}, P H_{4}^{+}, S O_{3}, [Al (OH)_{4}]^{-}$
388.
$According to MO theory, number of species/ions from the following having identical bond order is_____: C N^{-}, N O^{+}, O_{2}, O_{2}^{+}, O_{2}^{2 +}$
389.
$Amongst the following the number of oxide(s) which are paramagnetic in nature is N a_{2} O, K O_{2}, N O_{2}, N_{2} O, C 1 O_{2}, NO, S O_{2}, C 1_{2} O$
390.
$The number of paramagnetic species among the following is___________. B_{2}, L i_{2}, C_{2}, C_{2}^{-}, O_{2}^{2 -}, O_{2}^{+} and H e_{2}^{+}$