190032
A neutral molecule \(XF_3\) has a zero dipole moment. The element \(X\) is most likely
1 chlorine
2 boron
3 nitrogen
4 carbon
Explanation:
\(BF_3\) has planar and symmetrical structure thus as a result the resultant of two bond moments, being equal and opposite to the third, cancels out and hence molecule possess zero dipole moment.
11. THE P-BLOCK ELEMENTS
190037
Assertion : Stannous chloride gives grey precipitate with mercuric chloride, but stannic chloride does not do so.Reason : Stannous chloride is a powerful oxidising agent which oxidises mercuric chloride to metallic mercury.
1 If both Assertion and Reason are correct and the Reason is a correct explanation of the Assertion.
2 If both Assertion and Reason are correct but Reason is not a correct explanation of the Assertion.
3 If the Assertion is correct but Reason is incorrect.
4 If both the Assertion and Reason are incorrect.
Explanation:
\(Sn^{4+}\) is more stable than \(Sn^{2+}\) So, \(Sn^{2+}\) is oxidised to \(Sn^{4+}\) by losing \(2\) electrons when it reacts with mercuric chloride, i.e., \(SnCl_2\) is a reducing agent. \(2HgC{{l}_{2}}+SnC{{l}_{2}}\to H{{g}_{2}}C{{l}_{2}}+SnC{{l}_{4}}\) \(H{{g}_{2}}C{{l}_{2}}+SnC{{l}_{2}}\to \underset{(grey\,ppt)}{\mathop{2Hg}}\,+SnC{{l}_{4}}\)
11. THE P-BLOCK ELEMENTS
190038
Assertion : Diamond is a bad conductor.Reason : Graphite is a good conductor.
1 If both Assertion and Reason are correct and the Reason is a correct explanation of the Assertion.
2 If both Assertion and Reason are correct but Reason is not a correct explanation of the Assertion.
3 If the Assertion is correct but Reason is incorrect.
4 If both the Assertion and Reason are incorrect.
Explanation:
Diamond is a bad conductor because of lack of free electrons in its lattice. Graphite is a good conductor of electricity because of free electron in its lattice. So both assertion and reason are correct but reason is not correct explanation of assertion.
11. THE P-BLOCK ELEMENTS
190039
Assertion : \(PbI_4\) is a stable compound.Reason : Iodide stabilizes higher oxidation state
1 If both Assertion and Reason are correct and the Reason is a correct explanation of the Assertion.
2 If both Assertion and Reason are correct but Reason is not a correct explanation of the Assertion.
3 If the Assertion is correct but Reason is incorrect.
4 If both the Assertion and Reason are incorrect.
Explanation:
As we move down the group \(IVA\), \(+2\) oxidation state becomes more stable. Thus \(Pb^{4+}\) is not possible, i.e., \(PbI_4\) is highly unstable. \(I_2\) is a weak oxidising agent so it cannot oxidise \(Pb\) to \(Pb^{4+}\) oxidation state. So assertion and reason both are wrong.
11. THE P-BLOCK ELEMENTS
190040
Assertion : \(SiF_6^{2-}\) is known but \(SiCl_6^{2-}\) is notReason : Size of fluorine is small and its lone pair of electrons interacts with \(d-\) orbitals of \(Si\) strongly.
1 If both Assertion and Reason are correct and the Reason is a correct explanation of the Assertion.
2 If both Assertion and Reason are correct but Reason is not a correct explanation of the Assertion.
3 If the Assertion is correct but Reason is incorrect.
4 If both the Assertion and Reason are incorrect.
Explanation:
\(SiF_6^{2-}\) is known because \(F\) has small size and thus the ion is quite stable unlike \(SiCl_6^{2-}\) in which size of \(Cl\) atom is large which destabilise it.
190032
A neutral molecule \(XF_3\) has a zero dipole moment. The element \(X\) is most likely
1 chlorine
2 boron
3 nitrogen
4 carbon
Explanation:
\(BF_3\) has planar and symmetrical structure thus as a result the resultant of two bond moments, being equal and opposite to the third, cancels out and hence molecule possess zero dipole moment.
11. THE P-BLOCK ELEMENTS
190037
Assertion : Stannous chloride gives grey precipitate with mercuric chloride, but stannic chloride does not do so.Reason : Stannous chloride is a powerful oxidising agent which oxidises mercuric chloride to metallic mercury.
1 If both Assertion and Reason are correct and the Reason is a correct explanation of the Assertion.
2 If both Assertion and Reason are correct but Reason is not a correct explanation of the Assertion.
3 If the Assertion is correct but Reason is incorrect.
4 If both the Assertion and Reason are incorrect.
Explanation:
\(Sn^{4+}\) is more stable than \(Sn^{2+}\) So, \(Sn^{2+}\) is oxidised to \(Sn^{4+}\) by losing \(2\) electrons when it reacts with mercuric chloride, i.e., \(SnCl_2\) is a reducing agent. \(2HgC{{l}_{2}}+SnC{{l}_{2}}\to H{{g}_{2}}C{{l}_{2}}+SnC{{l}_{4}}\) \(H{{g}_{2}}C{{l}_{2}}+SnC{{l}_{2}}\to \underset{(grey\,ppt)}{\mathop{2Hg}}\,+SnC{{l}_{4}}\)
11. THE P-BLOCK ELEMENTS
190038
Assertion : Diamond is a bad conductor.Reason : Graphite is a good conductor.
1 If both Assertion and Reason are correct and the Reason is a correct explanation of the Assertion.
2 If both Assertion and Reason are correct but Reason is not a correct explanation of the Assertion.
3 If the Assertion is correct but Reason is incorrect.
4 If both the Assertion and Reason are incorrect.
Explanation:
Diamond is a bad conductor because of lack of free electrons in its lattice. Graphite is a good conductor of electricity because of free electron in its lattice. So both assertion and reason are correct but reason is not correct explanation of assertion.
11. THE P-BLOCK ELEMENTS
190039
Assertion : \(PbI_4\) is a stable compound.Reason : Iodide stabilizes higher oxidation state
1 If both Assertion and Reason are correct and the Reason is a correct explanation of the Assertion.
2 If both Assertion and Reason are correct but Reason is not a correct explanation of the Assertion.
3 If the Assertion is correct but Reason is incorrect.
4 If both the Assertion and Reason are incorrect.
Explanation:
As we move down the group \(IVA\), \(+2\) oxidation state becomes more stable. Thus \(Pb^{4+}\) is not possible, i.e., \(PbI_4\) is highly unstable. \(I_2\) is a weak oxidising agent so it cannot oxidise \(Pb\) to \(Pb^{4+}\) oxidation state. So assertion and reason both are wrong.
11. THE P-BLOCK ELEMENTS
190040
Assertion : \(SiF_6^{2-}\) is known but \(SiCl_6^{2-}\) is notReason : Size of fluorine is small and its lone pair of electrons interacts with \(d-\) orbitals of \(Si\) strongly.
1 If both Assertion and Reason are correct and the Reason is a correct explanation of the Assertion.
2 If both Assertion and Reason are correct but Reason is not a correct explanation of the Assertion.
3 If the Assertion is correct but Reason is incorrect.
4 If both the Assertion and Reason are incorrect.
Explanation:
\(SiF_6^{2-}\) is known because \(F\) has small size and thus the ion is quite stable unlike \(SiCl_6^{2-}\) in which size of \(Cl\) atom is large which destabilise it.
190032
A neutral molecule \(XF_3\) has a zero dipole moment. The element \(X\) is most likely
1 chlorine
2 boron
3 nitrogen
4 carbon
Explanation:
\(BF_3\) has planar and symmetrical structure thus as a result the resultant of two bond moments, being equal and opposite to the third, cancels out and hence molecule possess zero dipole moment.
11. THE P-BLOCK ELEMENTS
190037
Assertion : Stannous chloride gives grey precipitate with mercuric chloride, but stannic chloride does not do so.Reason : Stannous chloride is a powerful oxidising agent which oxidises mercuric chloride to metallic mercury.
1 If both Assertion and Reason are correct and the Reason is a correct explanation of the Assertion.
2 If both Assertion and Reason are correct but Reason is not a correct explanation of the Assertion.
3 If the Assertion is correct but Reason is incorrect.
4 If both the Assertion and Reason are incorrect.
Explanation:
\(Sn^{4+}\) is more stable than \(Sn^{2+}\) So, \(Sn^{2+}\) is oxidised to \(Sn^{4+}\) by losing \(2\) electrons when it reacts with mercuric chloride, i.e., \(SnCl_2\) is a reducing agent. \(2HgC{{l}_{2}}+SnC{{l}_{2}}\to H{{g}_{2}}C{{l}_{2}}+SnC{{l}_{4}}\) \(H{{g}_{2}}C{{l}_{2}}+SnC{{l}_{2}}\to \underset{(grey\,ppt)}{\mathop{2Hg}}\,+SnC{{l}_{4}}\)
11. THE P-BLOCK ELEMENTS
190038
Assertion : Diamond is a bad conductor.Reason : Graphite is a good conductor.
1 If both Assertion and Reason are correct and the Reason is a correct explanation of the Assertion.
2 If both Assertion and Reason are correct but Reason is not a correct explanation of the Assertion.
3 If the Assertion is correct but Reason is incorrect.
4 If both the Assertion and Reason are incorrect.
Explanation:
Diamond is a bad conductor because of lack of free electrons in its lattice. Graphite is a good conductor of electricity because of free electron in its lattice. So both assertion and reason are correct but reason is not correct explanation of assertion.
11. THE P-BLOCK ELEMENTS
190039
Assertion : \(PbI_4\) is a stable compound.Reason : Iodide stabilizes higher oxidation state
1 If both Assertion and Reason are correct and the Reason is a correct explanation of the Assertion.
2 If both Assertion and Reason are correct but Reason is not a correct explanation of the Assertion.
3 If the Assertion is correct but Reason is incorrect.
4 If both the Assertion and Reason are incorrect.
Explanation:
As we move down the group \(IVA\), \(+2\) oxidation state becomes more stable. Thus \(Pb^{4+}\) is not possible, i.e., \(PbI_4\) is highly unstable. \(I_2\) is a weak oxidising agent so it cannot oxidise \(Pb\) to \(Pb^{4+}\) oxidation state. So assertion and reason both are wrong.
11. THE P-BLOCK ELEMENTS
190040
Assertion : \(SiF_6^{2-}\) is known but \(SiCl_6^{2-}\) is notReason : Size of fluorine is small and its lone pair of electrons interacts with \(d-\) orbitals of \(Si\) strongly.
1 If both Assertion and Reason are correct and the Reason is a correct explanation of the Assertion.
2 If both Assertion and Reason are correct but Reason is not a correct explanation of the Assertion.
3 If the Assertion is correct but Reason is incorrect.
4 If both the Assertion and Reason are incorrect.
Explanation:
\(SiF_6^{2-}\) is known because \(F\) has small size and thus the ion is quite stable unlike \(SiCl_6^{2-}\) in which size of \(Cl\) atom is large which destabilise it.
NEET Test Series from KOTA - 10 Papers In MS WORD
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11. THE P-BLOCK ELEMENTS
190032
A neutral molecule \(XF_3\) has a zero dipole moment. The element \(X\) is most likely
1 chlorine
2 boron
3 nitrogen
4 carbon
Explanation:
\(BF_3\) has planar and symmetrical structure thus as a result the resultant of two bond moments, being equal and opposite to the third, cancels out and hence molecule possess zero dipole moment.
11. THE P-BLOCK ELEMENTS
190037
Assertion : Stannous chloride gives grey precipitate with mercuric chloride, but stannic chloride does not do so.Reason : Stannous chloride is a powerful oxidising agent which oxidises mercuric chloride to metallic mercury.
1 If both Assertion and Reason are correct and the Reason is a correct explanation of the Assertion.
2 If both Assertion and Reason are correct but Reason is not a correct explanation of the Assertion.
3 If the Assertion is correct but Reason is incorrect.
4 If both the Assertion and Reason are incorrect.
Explanation:
\(Sn^{4+}\) is more stable than \(Sn^{2+}\) So, \(Sn^{2+}\) is oxidised to \(Sn^{4+}\) by losing \(2\) electrons when it reacts with mercuric chloride, i.e., \(SnCl_2\) is a reducing agent. \(2HgC{{l}_{2}}+SnC{{l}_{2}}\to H{{g}_{2}}C{{l}_{2}}+SnC{{l}_{4}}\) \(H{{g}_{2}}C{{l}_{2}}+SnC{{l}_{2}}\to \underset{(grey\,ppt)}{\mathop{2Hg}}\,+SnC{{l}_{4}}\)
11. THE P-BLOCK ELEMENTS
190038
Assertion : Diamond is a bad conductor.Reason : Graphite is a good conductor.
1 If both Assertion and Reason are correct and the Reason is a correct explanation of the Assertion.
2 If both Assertion and Reason are correct but Reason is not a correct explanation of the Assertion.
3 If the Assertion is correct but Reason is incorrect.
4 If both the Assertion and Reason are incorrect.
Explanation:
Diamond is a bad conductor because of lack of free electrons in its lattice. Graphite is a good conductor of electricity because of free electron in its lattice. So both assertion and reason are correct but reason is not correct explanation of assertion.
11. THE P-BLOCK ELEMENTS
190039
Assertion : \(PbI_4\) is a stable compound.Reason : Iodide stabilizes higher oxidation state
1 If both Assertion and Reason are correct and the Reason is a correct explanation of the Assertion.
2 If both Assertion and Reason are correct but Reason is not a correct explanation of the Assertion.
3 If the Assertion is correct but Reason is incorrect.
4 If both the Assertion and Reason are incorrect.
Explanation:
As we move down the group \(IVA\), \(+2\) oxidation state becomes more stable. Thus \(Pb^{4+}\) is not possible, i.e., \(PbI_4\) is highly unstable. \(I_2\) is a weak oxidising agent so it cannot oxidise \(Pb\) to \(Pb^{4+}\) oxidation state. So assertion and reason both are wrong.
11. THE P-BLOCK ELEMENTS
190040
Assertion : \(SiF_6^{2-}\) is known but \(SiCl_6^{2-}\) is notReason : Size of fluorine is small and its lone pair of electrons interacts with \(d-\) orbitals of \(Si\) strongly.
1 If both Assertion and Reason are correct and the Reason is a correct explanation of the Assertion.
2 If both Assertion and Reason are correct but Reason is not a correct explanation of the Assertion.
3 If the Assertion is correct but Reason is incorrect.
4 If both the Assertion and Reason are incorrect.
Explanation:
\(SiF_6^{2-}\) is known because \(F\) has small size and thus the ion is quite stable unlike \(SiCl_6^{2-}\) in which size of \(Cl\) atom is large which destabilise it.
190032
A neutral molecule \(XF_3\) has a zero dipole moment. The element \(X\) is most likely
1 chlorine
2 boron
3 nitrogen
4 carbon
Explanation:
\(BF_3\) has planar and symmetrical structure thus as a result the resultant of two bond moments, being equal and opposite to the third, cancels out and hence molecule possess zero dipole moment.
11. THE P-BLOCK ELEMENTS
190037
Assertion : Stannous chloride gives grey precipitate with mercuric chloride, but stannic chloride does not do so.Reason : Stannous chloride is a powerful oxidising agent which oxidises mercuric chloride to metallic mercury.
1 If both Assertion and Reason are correct and the Reason is a correct explanation of the Assertion.
2 If both Assertion and Reason are correct but Reason is not a correct explanation of the Assertion.
3 If the Assertion is correct but Reason is incorrect.
4 If both the Assertion and Reason are incorrect.
Explanation:
\(Sn^{4+}\) is more stable than \(Sn^{2+}\) So, \(Sn^{2+}\) is oxidised to \(Sn^{4+}\) by losing \(2\) electrons when it reacts with mercuric chloride, i.e., \(SnCl_2\) is a reducing agent. \(2HgC{{l}_{2}}+SnC{{l}_{2}}\to H{{g}_{2}}C{{l}_{2}}+SnC{{l}_{4}}\) \(H{{g}_{2}}C{{l}_{2}}+SnC{{l}_{2}}\to \underset{(grey\,ppt)}{\mathop{2Hg}}\,+SnC{{l}_{4}}\)
11. THE P-BLOCK ELEMENTS
190038
Assertion : Diamond is a bad conductor.Reason : Graphite is a good conductor.
1 If both Assertion and Reason are correct and the Reason is a correct explanation of the Assertion.
2 If both Assertion and Reason are correct but Reason is not a correct explanation of the Assertion.
3 If the Assertion is correct but Reason is incorrect.
4 If both the Assertion and Reason are incorrect.
Explanation:
Diamond is a bad conductor because of lack of free electrons in its lattice. Graphite is a good conductor of electricity because of free electron in its lattice. So both assertion and reason are correct but reason is not correct explanation of assertion.
11. THE P-BLOCK ELEMENTS
190039
Assertion : \(PbI_4\) is a stable compound.Reason : Iodide stabilizes higher oxidation state
1 If both Assertion and Reason are correct and the Reason is a correct explanation of the Assertion.
2 If both Assertion and Reason are correct but Reason is not a correct explanation of the Assertion.
3 If the Assertion is correct but Reason is incorrect.
4 If both the Assertion and Reason are incorrect.
Explanation:
As we move down the group \(IVA\), \(+2\) oxidation state becomes more stable. Thus \(Pb^{4+}\) is not possible, i.e., \(PbI_4\) is highly unstable. \(I_2\) is a weak oxidising agent so it cannot oxidise \(Pb\) to \(Pb^{4+}\) oxidation state. So assertion and reason both are wrong.
11. THE P-BLOCK ELEMENTS
190040
Assertion : \(SiF_6^{2-}\) is known but \(SiCl_6^{2-}\) is notReason : Size of fluorine is small and its lone pair of electrons interacts with \(d-\) orbitals of \(Si\) strongly.
1 If both Assertion and Reason are correct and the Reason is a correct explanation of the Assertion.
2 If both Assertion and Reason are correct but Reason is not a correct explanation of the Assertion.
3 If the Assertion is correct but Reason is incorrect.
4 If both the Assertion and Reason are incorrect.
Explanation:
\(SiF_6^{2-}\) is known because \(F\) has small size and thus the ion is quite stable unlike \(SiCl_6^{2-}\) in which size of \(Cl\) atom is large which destabilise it.
