Considering ethene molecule,which of the foll | vedclass

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(A) $I$. The $C-C$ sigma bond in ethene $(CH_2=CH_2)$ is formed by the head-on overlap of $sp^2$ hybrid orbitals of two carbon atoms. This is correct.

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$I, II, III$

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(A) $I$. The $C-C$ sigma bond in ethene $(CH_2=CH_2)$ is formed by the head-on overlap of $sp^2$ hybrid orbitals of two carbon atoms. This is correct.$II$. The $C-H$ sigma bond is formed by the overlap of the $sp^2$ hybrid orbital of carbon and the $1s$ orbital of hydrogen. This is correct.$III$. The $\pi$ bond is formed by the lateral overlap of unhybridized $2p_z$ orbitals,which is a $p\pi-p\pi$ bond. This is correct.$IV$. In ethene,the $H-C-H$ bond angle is approximately $117.6^\circ$ and the $H-C-C$ bond angle is approximately $121.2^\circ$. Thus,the $H-C-H$ bond angle is smaller than the $H-C-C$ bond angle. This statement is incorrect.$V$. The $\pi$ bond has a nodal plane that is perpendicular to the molecular plane. This statement is incorrect.

List-$I$	List-$II$
$(1)$ Hydrogen bond	$(A)$ ${\rm{C}}$
$(2)$ Resonance	$(B)$ ${\rm{LiF}}$
$(3)$ Ionic solid	$(C)$ ${\rm{H}}_2$
$(4)$ Covalent solid	$(D)$ ${\rm{HF}}$
	$(E)$ ${\rm{O}}_3$

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Which of the following statements is correct?

Which of the following are isostructural pairs?
$A.$ $SO_{4}^{2-}$ and $CrO_{4}^{2-}$
$B.$ $SiCl_{4}$ and $TiCl_{4}$
$C.$ $NH_{3}$ and $NO_{3}^{-}$
$D.$ $BCl_{3}$ and $BrCl_{3}$

The formal charges of $N_{(1)}$,$N_{(2)}$ and $O$ atoms in the structure shown below are respectively:
$:N_{(1)}=N_{(2)}=\ddot{O}:$

Match the items in List-$I$ with the appropriate examples in List-$II$.

List-$I$ List-$II$

$(1)$ Hydrogen bond $(A)$ ${\rm{C}}$

$(2)$ Resonance $(B)$ ${\rm{LiF}}$

$(3)$ Ionic solid $(C)$ ${\rm{H}}_2$

$(4)$ Covalent solid $(D)$ ${\rm{HF}}$

$(E)$ ${\rm{O}}_3$

Choose the correct order for the given property.
$M.P. \to$ Melting Point; $S \to$ Solubility

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Which of the following statements is correct?

Which of the following are isostructural pairs?$A.$ $SO_{4}^{2-}$ and $CrO_{4}^{2-}$$B.$ $SiCl_{4}$ and $TiCl_{4}$$C.$ $NH_{3}$ and $NO_{3}^{-}$$D.$ $BCl_{3}$ and $BrCl_{3}$

The formal charges of $N_{(1)}$,$N_{(2)}$ and $O$ atoms in the structure shown below are respectively:$:N_{(1)}=N_{(2)}=\ddot{O}:$

Match the items in List-$I$ with the appropriate examples in List-$II$. List-$I$ List-$II$ $(1)$ Hydrogen bond $(A)$ ${\rm{C}}$ $(2)$ Resonance $(B)$ ${\rm{LiF}}$ $(3)$ Ionic solid $(C)$ ${\rm{H}}_2$ $(4)$ Covalent solid $(D)$ ${\rm{HF}}$ $(E)$ ${\rm{O}}_3$

Choose the correct order for the given property.$M.P. \to$ Melting Point; $S \to$ Solubility