\(\mathrm{Al}_{4} \mathrm{C}_{3}+\mathrm{H}_{2} \mathrm{O} \rightarrow 4 \mathrm{Al}(\mathrm{OH})_{3}+\mathrm{CH}_{4}\) Thus alkane is formed instead of acetylene.
11. THE P-BLOCK ELEMENTS
189946
Which of the following properties describes the diagooal relalionship between boron and silicon?
1 \(BCl_3\) is not hydrolysed while \(SiCl_4\) can be hydrolysed
2 Both form oxides \(B_2O_3\) is ampboteric and \(SiO_2\) is acidic
3 Both metals dissolve in cold and dilute nitric acid
4 Silicide and boride salts are hydrolysed by water
Explanation:
11. THE P-BLOCK ELEMENTS
190019
Select correct statement \((s)\).
1 Cyanamide ion \((CN_2\,^{2-})\) is isoelectronic with \(CO_2\) and has the same linear structure
2 \(Mg_2C_3\) reacts with water to form propyne
3 \(CaC_2\) has \(NaCl\) type lattice
4 All of the above
Explanation:
In \(CO_2\) we have \(22(6+8+8=22)\) electrons. In \((CN_2^{2-})\), we have \(22(6+7+7+2=22)\) electrons. Both \(CO_2\) and \((CN_2^{2-})\) have linear structures. Thus, statement \((a)\) is correct. \(M{{g}_{2}}{{C}_{3}}+4{{H}_{2}}O\to 2Mg{{(OH)}_{2}}+\underset{\Pr opyne}{\mathop{C{{H}_{3}}C\equiv CH}}\,\) i.e., statement \((b)\) is also correct. The structure of \(CaC_2\) is of \(NaCl\) type i.e., statement \((c)\) is also correct.
11. THE P-BLOCK ELEMENTS
189890
Incorrect match
1 \(Me_3SiCl -\) Dimer of silicon's
2 \(Me_2SiCl_2 -\) Linear chain silicon's
3 \(Ph_2SiCl_3 -\) Cross linked silicon's
4 \(MeSiCl_3 -\) Cross linked silicon's
Explanation:
11. THE P-BLOCK ELEMENTS
190045
Assertion : \(Pb^{4+}\) compounds are stronger oxidizing agents than \(Sn^{4+}\) compounds.Reason : The higher oxidation states for the group \(14\) elements are more stable for the heavier members of the group due to ‘inert pair effect’.
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:
Assertion is true because lower oxidation state becomes more and more stable for heavier elements in \(p-\) block due to inert pair effect. Hence Reason is false
\(\mathrm{Al}_{4} \mathrm{C}_{3}+\mathrm{H}_{2} \mathrm{O} \rightarrow 4 \mathrm{Al}(\mathrm{OH})_{3}+\mathrm{CH}_{4}\) Thus alkane is formed instead of acetylene.
11. THE P-BLOCK ELEMENTS
189946
Which of the following properties describes the diagooal relalionship between boron and silicon?
1 \(BCl_3\) is not hydrolysed while \(SiCl_4\) can be hydrolysed
2 Both form oxides \(B_2O_3\) is ampboteric and \(SiO_2\) is acidic
3 Both metals dissolve in cold and dilute nitric acid
4 Silicide and boride salts are hydrolysed by water
Explanation:
11. THE P-BLOCK ELEMENTS
190019
Select correct statement \((s)\).
1 Cyanamide ion \((CN_2\,^{2-})\) is isoelectronic with \(CO_2\) and has the same linear structure
2 \(Mg_2C_3\) reacts with water to form propyne
3 \(CaC_2\) has \(NaCl\) type lattice
4 All of the above
Explanation:
In \(CO_2\) we have \(22(6+8+8=22)\) electrons. In \((CN_2^{2-})\), we have \(22(6+7+7+2=22)\) electrons. Both \(CO_2\) and \((CN_2^{2-})\) have linear structures. Thus, statement \((a)\) is correct. \(M{{g}_{2}}{{C}_{3}}+4{{H}_{2}}O\to 2Mg{{(OH)}_{2}}+\underset{\Pr opyne}{\mathop{C{{H}_{3}}C\equiv CH}}\,\) i.e., statement \((b)\) is also correct. The structure of \(CaC_2\) is of \(NaCl\) type i.e., statement \((c)\) is also correct.
11. THE P-BLOCK ELEMENTS
189890
Incorrect match
1 \(Me_3SiCl -\) Dimer of silicon's
2 \(Me_2SiCl_2 -\) Linear chain silicon's
3 \(Ph_2SiCl_3 -\) Cross linked silicon's
4 \(MeSiCl_3 -\) Cross linked silicon's
Explanation:
11. THE P-BLOCK ELEMENTS
190045
Assertion : \(Pb^{4+}\) compounds are stronger oxidizing agents than \(Sn^{4+}\) compounds.Reason : The higher oxidation states for the group \(14\) elements are more stable for the heavier members of the group due to ‘inert pair effect’.
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:
Assertion is true because lower oxidation state becomes more and more stable for heavier elements in \(p-\) block due to inert pair effect. Hence Reason is false
\(\mathrm{Al}_{4} \mathrm{C}_{3}+\mathrm{H}_{2} \mathrm{O} \rightarrow 4 \mathrm{Al}(\mathrm{OH})_{3}+\mathrm{CH}_{4}\) Thus alkane is formed instead of acetylene.
11. THE P-BLOCK ELEMENTS
189946
Which of the following properties describes the diagooal relalionship between boron and silicon?
1 \(BCl_3\) is not hydrolysed while \(SiCl_4\) can be hydrolysed
2 Both form oxides \(B_2O_3\) is ampboteric and \(SiO_2\) is acidic
3 Both metals dissolve in cold and dilute nitric acid
4 Silicide and boride salts are hydrolysed by water
Explanation:
11. THE P-BLOCK ELEMENTS
190019
Select correct statement \((s)\).
1 Cyanamide ion \((CN_2\,^{2-})\) is isoelectronic with \(CO_2\) and has the same linear structure
2 \(Mg_2C_3\) reacts with water to form propyne
3 \(CaC_2\) has \(NaCl\) type lattice
4 All of the above
Explanation:
In \(CO_2\) we have \(22(6+8+8=22)\) electrons. In \((CN_2^{2-})\), we have \(22(6+7+7+2=22)\) electrons. Both \(CO_2\) and \((CN_2^{2-})\) have linear structures. Thus, statement \((a)\) is correct. \(M{{g}_{2}}{{C}_{3}}+4{{H}_{2}}O\to 2Mg{{(OH)}_{2}}+\underset{\Pr opyne}{\mathop{C{{H}_{3}}C\equiv CH}}\,\) i.e., statement \((b)\) is also correct. The structure of \(CaC_2\) is of \(NaCl\) type i.e., statement \((c)\) is also correct.
11. THE P-BLOCK ELEMENTS
189890
Incorrect match
1 \(Me_3SiCl -\) Dimer of silicon's
2 \(Me_2SiCl_2 -\) Linear chain silicon's
3 \(Ph_2SiCl_3 -\) Cross linked silicon's
4 \(MeSiCl_3 -\) Cross linked silicon's
Explanation:
11. THE P-BLOCK ELEMENTS
190045
Assertion : \(Pb^{4+}\) compounds are stronger oxidizing agents than \(Sn^{4+}\) compounds.Reason : The higher oxidation states for the group \(14\) elements are more stable for the heavier members of the group due to ‘inert pair effect’.
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:
Assertion is true because lower oxidation state becomes more and more stable for heavier elements in \(p-\) block due to inert pair effect. Hence Reason is false
\(\mathrm{Al}_{4} \mathrm{C}_{3}+\mathrm{H}_{2} \mathrm{O} \rightarrow 4 \mathrm{Al}(\mathrm{OH})_{3}+\mathrm{CH}_{4}\) Thus alkane is formed instead of acetylene.
11. THE P-BLOCK ELEMENTS
189946
Which of the following properties describes the diagooal relalionship between boron and silicon?
1 \(BCl_3\) is not hydrolysed while \(SiCl_4\) can be hydrolysed
2 Both form oxides \(B_2O_3\) is ampboteric and \(SiO_2\) is acidic
3 Both metals dissolve in cold and dilute nitric acid
4 Silicide and boride salts are hydrolysed by water
Explanation:
11. THE P-BLOCK ELEMENTS
190019
Select correct statement \((s)\).
1 Cyanamide ion \((CN_2\,^{2-})\) is isoelectronic with \(CO_2\) and has the same linear structure
2 \(Mg_2C_3\) reacts with water to form propyne
3 \(CaC_2\) has \(NaCl\) type lattice
4 All of the above
Explanation:
In \(CO_2\) we have \(22(6+8+8=22)\) electrons. In \((CN_2^{2-})\), we have \(22(6+7+7+2=22)\) electrons. Both \(CO_2\) and \((CN_2^{2-})\) have linear structures. Thus, statement \((a)\) is correct. \(M{{g}_{2}}{{C}_{3}}+4{{H}_{2}}O\to 2Mg{{(OH)}_{2}}+\underset{\Pr opyne}{\mathop{C{{H}_{3}}C\equiv CH}}\,\) i.e., statement \((b)\) is also correct. The structure of \(CaC_2\) is of \(NaCl\) type i.e., statement \((c)\) is also correct.
11. THE P-BLOCK ELEMENTS
189890
Incorrect match
1 \(Me_3SiCl -\) Dimer of silicon's
2 \(Me_2SiCl_2 -\) Linear chain silicon's
3 \(Ph_2SiCl_3 -\) Cross linked silicon's
4 \(MeSiCl_3 -\) Cross linked silicon's
Explanation:
11. THE P-BLOCK ELEMENTS
190045
Assertion : \(Pb^{4+}\) compounds are stronger oxidizing agents than \(Sn^{4+}\) compounds.Reason : The higher oxidation states for the group \(14\) elements are more stable for the heavier members of the group due to ‘inert pair effect’.
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:
Assertion is true because lower oxidation state becomes more and more stable for heavier elements in \(p-\) block due to inert pair effect. Hence Reason is false
\(\mathrm{Al}_{4} \mathrm{C}_{3}+\mathrm{H}_{2} \mathrm{O} \rightarrow 4 \mathrm{Al}(\mathrm{OH})_{3}+\mathrm{CH}_{4}\) Thus alkane is formed instead of acetylene.
11. THE P-BLOCK ELEMENTS
189946
Which of the following properties describes the diagooal relalionship between boron and silicon?
1 \(BCl_3\) is not hydrolysed while \(SiCl_4\) can be hydrolysed
2 Both form oxides \(B_2O_3\) is ampboteric and \(SiO_2\) is acidic
3 Both metals dissolve in cold and dilute nitric acid
4 Silicide and boride salts are hydrolysed by water
Explanation:
11. THE P-BLOCK ELEMENTS
190019
Select correct statement \((s)\).
1 Cyanamide ion \((CN_2\,^{2-})\) is isoelectronic with \(CO_2\) and has the same linear structure
2 \(Mg_2C_3\) reacts with water to form propyne
3 \(CaC_2\) has \(NaCl\) type lattice
4 All of the above
Explanation:
In \(CO_2\) we have \(22(6+8+8=22)\) electrons. In \((CN_2^{2-})\), we have \(22(6+7+7+2=22)\) electrons. Both \(CO_2\) and \((CN_2^{2-})\) have linear structures. Thus, statement \((a)\) is correct. \(M{{g}_{2}}{{C}_{3}}+4{{H}_{2}}O\to 2Mg{{(OH)}_{2}}+\underset{\Pr opyne}{\mathop{C{{H}_{3}}C\equiv CH}}\,\) i.e., statement \((b)\) is also correct. The structure of \(CaC_2\) is of \(NaCl\) type i.e., statement \((c)\) is also correct.
11. THE P-BLOCK ELEMENTS
189890
Incorrect match
1 \(Me_3SiCl -\) Dimer of silicon's
2 \(Me_2SiCl_2 -\) Linear chain silicon's
3 \(Ph_2SiCl_3 -\) Cross linked silicon's
4 \(MeSiCl_3 -\) Cross linked silicon's
Explanation:
11. THE P-BLOCK ELEMENTS
190045
Assertion : \(Pb^{4+}\) compounds are stronger oxidizing agents than \(Sn^{4+}\) compounds.Reason : The higher oxidation states for the group \(14\) elements are more stable for the heavier members of the group due to ‘inert pair effect’.
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:
Assertion is true because lower oxidation state becomes more and more stable for heavier elements in \(p-\) block due to inert pair effect. Hence Reason is false