Chemical Bonding PYQs Set 11 (PDF)

Set 11 of 17 · Questions 301-330 of 508

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NEET Chemistry · Chemical Bonding · Set 11 (Q301-330)

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301.
Identify the option in which the molecules are arranged in the correct order of their dipole moments.
1. (1) $CO_{2} < H_{2} O < H_{2} S$
2. (2) $HF < HCl < HBr$
3. (3) $BF_{3} < NF_{3} < NH_{3}$
4. (4) $CH_{4} < CHCl_{3} < CCl_{4}$
302.
The hybridization of atomic orbitals of nitrogen in NO $_{2}^{+}$ , NO $_{3}^{-}$ and NH $_{4}^{+}$ are :
1. (1) $sp, s p^{3} and s p^{2} respectively$
2. (2) $sp, s p^{2} and s p^{3} respectively$
3. (3) $s p^{2}, sp and s p^{3} respectively$
4. (4) $s p^{2}, s p^{3} and sp respectively$
303.
Identify the molecule in which the arrangement of electron pairs around the central atom is octahedral and shape is not octahedral.
1. (1) $SF_{6}$
2. (2) $XeF_{6}$
3. (3) $BrF_{5}$
4. (4) $XeO_{2} F_{4}$
304.
$H_{2} O$ is dipolar, whereas $B e F_{2}$ is not. It is because
1. (1) $the electronegativity of F is greater than that of O$
2. (2) $H_{2} O involves hydrogen bonding whereas B e F_{2} is a discrete molecule$
3. (3) $H_{2} O is linear and B e F_{2} is angular$
4. (4) $H_{2} O is angular and B e F_{2} is linear.$
305.
How many bridging oxygen atoms are present in P4O10?
1. (1) $6$
2. (2) $4$
3. (3) $2$
4. (4) $5$
306.
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. (1) $Both Statement I and Statement II are incorrect$
2. (2) $Both Statement I and Statement II are correct$
3. (3) $Statement I is incorrect but Statement II is correct$
4. (4) $Statement I is correct but Statement II is incorrect$
307.
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. (1) $Both Statement I and Statement II are false$
2. (2) $Both Statement I and Statement II are true$
3. (3) $Statement I is false but Statement II is true$
4. (4) $Statement I is true but Statement II is false$
308.
The correct statement among the following is :
1. (1) $SiH33Nis planar and less basic than (CH_{3})_{3} N .$
2. (2) $(SiH_{3})_{3} N is pyramidal and more basic than (CH_{3})_{3} N .$
3. (3) $(SiH_{3})_{3} is pyramidal and less basic than (CH_{3})_{3} .$
4. (4) $(SiH_{3})_{3} is planar and more basic than (CH_{3})_{3} .$
309.
Intramolecular hydrogen bonding is formed in
1. (1) $H_{2} O$
2. (2) $salicylaldehyde$
3. (3) $NH_{3}$
4. (4) $benzophenone.$
310.
Which of the following is not a correct statement?
1. (1) $Multiple bonds are always shorter than corresponding single bonds.$
2. (2) $The electron‐deficient molecules can act as Lewis acids.$
3. (3) $The canonical structures have no real existence.$
4. (4) $Every A B_{5} molecule does in fact have square pyramid structure.$
311.
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. (1) $A is false but R is true$
2. (2) $Both A and R are true and R is the correct explanation of A$
3. (3) $A is true but R is false$
4. (4) $Both A and R are true and R is not the correct explanation of A$
312.
$Cl F_{5}$ at room temperature is a
1. (1) $Colourless liquid with trigonal bipyramidal geometry$
2. (2) $Colourless gas with square pyramidal geometry$
3. (3) $Colourless gas with trigonal bipyramidal geometry$
4. (4) $Colourless liquid with square pyramidal geometry$
313.
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. (1) $(A)-(iii), (B)-(iv), (C)-(i), (D)-(ii)$
2. (2) $(A)-(i), (B)-(ii), (C)- (iii), (D)-(iv)$
3. (3) $(A)-(ii), (B)-(i), (C)- (iv), (D)-(i)$
4. (4) $(A)-(iv), (B)-(iii), (C)- (ii), (D)-(i)$
314.
Bonding in which of the following diatomic molecule(s) become(s) stronger, on the basis of MO Theory, by removal of an electron ?
1. (1) $NO$
2. (2) $N_{2}$
3. (3) $O_{2}$
4. (4) $C_{2}$
315.
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. (1) $Statement I is incorrect but statement II is correct$
2. (2) $Both Statement I and Statement II are incorrect$
3. (3) $Both Statement I and Statement II are correct$
4. (4) $Statement I is correct but statement II is incorrect$
316.
Which of the following molecule does not possess a permanent dipole moment?
1. (1) $C S_{2}$
2. (2) $S O_{3}$
3. (3) $H_{2} S$
4. (4) $S O_{2}$
317.
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. (1) $(A), (C) & (D) Only$
2. (2) $(B), (C) & (D) Only$
3. (3) $(B) & (C) Only$
4. (4) $(A), (B), (C) (D) & (E)$
318.
Equilateral shape has
1. (1) $s p hybridisation$
2. (2) $s p^{2} hybridisation$
3. (3) $s p^{3} hybridisation$
4. (4) $d s p^{3} hybridisation.$
319.
Which of the following is diamagnetic?
1. (1) $H_{2}^{+}$
2. (2) $O_{2}$
3. (3) $Li_{2}$
4. (4) $He_{2}^{+}$
320.
During the formation of a chemical bond
1. (1) $electron-electron repulsion becomes more than the nucleus-electron attraction$
2. (2) $energy of the system does not change$
3. (3) $energy increases$
4. (4) $energy decreases.$
321.
Which of the following is diamagnetic?
1. (1) $H_{2}^{+}$
2. (2) $He_{2}^{+}$
3. (3) $O_{2}$
4. (4) $N_{2}$
322.
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. (1) $Both Statement I and Statement II are false$
2. (2) $Statement I is true but Statement II is false$
3. (3) $Statement I is false but Statement II is true$
4. (4) $Both Statement I and Statement II are true$
323.
Which structure is linear?
1. (1) $S O_{2}$
2. (2) $C O_{2}$
3. (3) $C O_{3}^{2 -}$
4. (4) $S O_{4}^{2 -}$
324.
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) $Both Statement I and Statement II are false$
325.
Which of the following is least ionic?
1. (1) $BaCl_{2}$
2. (2) $AgCl$
3. (3) $KCl$
4. (4) $CoCl_{2}$
326.
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) $I, III only$
327.
$Match the LIST-I with LIST-II (Classification of molecules based on octet rule) (Example)$
$LIST-I$ $LIST-II$
$A. Molecules obeying octet rule$ $I. NO, NO_{2}$
$B. Molecules with incomplete octet$ $II.$
$BCl_{3}, AlCl_{3} C. Molecules with incomplete octet with odd electron III. H_{2} SO_{4}, PCl_{5} D. Molecules with expanded octet IV. CCl_{4}, CO_{2} Choose the correct answer from the options given below:$
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) $A-III, B-II, C-I, D-IV$
328.
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) $Both Statement I and Statement II are true$
329.
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) $O_{2}^{+} > O_{2}^{2 -} > O_{2}^{-} > O_{2}$
330.
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) $Both Statement I and Statement II are incorrect.$