11. THE P-BLOCK ELEMENTS
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11. THE P-BLOCK ELEMENTS

190063 Given are two statements one is labelled as Assertion \(A\) and other is labelled as Reason \(R\).Assertion \(A\) :Magnesium can reduce \(Al _{2} O _{3}\) at a temperature below \(1350^{\circ} C\), while above \(1350^{\circ} C\) aluminium can reduce \(MgO\).Reason \(R\) : The melting and boiling points of magnesium are lower than those of aluminium.In light of the above statements. choose most appropriate answer from the options given below

1 Both \(A\) and \(R\) are correct. and \(R\) is correct explanation of \(A\).
2 Both \(A\) and \(R\) are correct. but \(R\) is NOT the correct explanation of \(A\).
3 \(A\) is correct \(R\) is not correct.
4 \(A\) is not correct. \(R\) is correct.
11. THE P-BLOCK ELEMENTS

190064 The geometry around boron in the product ' \(B\) ' formed from the following reaction is\(BF _{3}+ NaH \stackrel{450 K }{\longrightarrow} A + NaF\)\(A + NMe _{3} \rightarrow B\)

1 \(trigonal\,planar\)
2 \(tetrahedral\)
3 \(pyramidal\)
4 \(square\,planar\)
11. THE P-BLOCK ELEMENTS

190065 Given below are two statements: one is labelled as Assertion \(A\) and the other is labelled as Reason \(R\).Assertion \(A\) : Boric acid is a weak acidReason \(R\) : Boric acid is not able to release \(H ^{+}\)ion on its own. It receives \(OH ^{-}\)ion from water and releases \(H ^{+}\)ion.In the light of the above statements, choose the most appropriate answer from the options given below.

1 Both \(A\) and \(R\) are correct and \(R\) is the correct explanation of \(A\)
2 Both \(A\) and \(R\) are correct but \(R\) is NOT the correct explanation of \(A\)
3 \(A\) is correct but \(R\) is not correct
4 \(A\) is not correct but \(R\) is correct
11. THE P-BLOCK ELEMENTS

190066 Borazine, also known as inorganic benzene, can be prepared by the reaction of \(3-equivalents\) of " \(X\) " with \(6-equivalents\) of "\(Y\)"."\(X\)" and "\(Y\)", respectively are.

1 \(B ( OH )_{3}\) and \(NH _{3}\)
2 \(B _{2} H _{6}\) and \(NH _{3}\)
3 \(B _{2} H _{6}\) and \(HN _{3}\)
4 \(NH _{3}\) and \(B _{2} O _{3}\)
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11. THE P-BLOCK ELEMENTS

190063 Given are two statements one is labelled as Assertion \(A\) and other is labelled as Reason \(R\).Assertion \(A\) :Magnesium can reduce \(Al _{2} O _{3}\) at a temperature below \(1350^{\circ} C\), while above \(1350^{\circ} C\) aluminium can reduce \(MgO\).Reason \(R\) : The melting and boiling points of magnesium are lower than those of aluminium.In light of the above statements. choose most appropriate answer from the options given below

1 Both \(A\) and \(R\) are correct. and \(R\) is correct explanation of \(A\).
2 Both \(A\) and \(R\) are correct. but \(R\) is NOT the correct explanation of \(A\).
3 \(A\) is correct \(R\) is not correct.
4 \(A\) is not correct. \(R\) is correct.
11. THE P-BLOCK ELEMENTS

190064 The geometry around boron in the product ' \(B\) ' formed from the following reaction is\(BF _{3}+ NaH \stackrel{450 K }{\longrightarrow} A + NaF\)\(A + NMe _{3} \rightarrow B\)

1 \(trigonal\,planar\)
2 \(tetrahedral\)
3 \(pyramidal\)
4 \(square\,planar\)
11. THE P-BLOCK ELEMENTS

190065 Given below are two statements: one is labelled as Assertion \(A\) and the other is labelled as Reason \(R\).Assertion \(A\) : Boric acid is a weak acidReason \(R\) : Boric acid is not able to release \(H ^{+}\)ion on its own. It receives \(OH ^{-}\)ion from water and releases \(H ^{+}\)ion.In the light of the above statements, choose the most appropriate answer from the options given below.

1 Both \(A\) and \(R\) are correct and \(R\) is the correct explanation of \(A\)
2 Both \(A\) and \(R\) are correct but \(R\) is NOT the correct explanation of \(A\)
3 \(A\) is correct but \(R\) is not correct
4 \(A\) is not correct but \(R\) is correct
11. THE P-BLOCK ELEMENTS

190066 Borazine, also known as inorganic benzene, can be prepared by the reaction of \(3-equivalents\) of " \(X\) " with \(6-equivalents\) of "\(Y\)"."\(X\)" and "\(Y\)", respectively are.

1 \(B ( OH )_{3}\) and \(NH _{3}\)
2 \(B _{2} H _{6}\) and \(NH _{3}\)
3 \(B _{2} H _{6}\) and \(HN _{3}\)
4 \(NH _{3}\) and \(B _{2} O _{3}\)
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11. THE P-BLOCK ELEMENTS

190063 Given are two statements one is labelled as Assertion \(A\) and other is labelled as Reason \(R\).Assertion \(A\) :Magnesium can reduce \(Al _{2} O _{3}\) at a temperature below \(1350^{\circ} C\), while above \(1350^{\circ} C\) aluminium can reduce \(MgO\).Reason \(R\) : The melting and boiling points of magnesium are lower than those of aluminium.In light of the above statements. choose most appropriate answer from the options given below

1 Both \(A\) and \(R\) are correct. and \(R\) is correct explanation of \(A\).
2 Both \(A\) and \(R\) are correct. but \(R\) is NOT the correct explanation of \(A\).
3 \(A\) is correct \(R\) is not correct.
4 \(A\) is not correct. \(R\) is correct.
11. THE P-BLOCK ELEMENTS

190064 The geometry around boron in the product ' \(B\) ' formed from the following reaction is\(BF _{3}+ NaH \stackrel{450 K }{\longrightarrow} A + NaF\)\(A + NMe _{3} \rightarrow B\)

1 \(trigonal\,planar\)
2 \(tetrahedral\)
3 \(pyramidal\)
4 \(square\,planar\)
11. THE P-BLOCK ELEMENTS

190065 Given below are two statements: one is labelled as Assertion \(A\) and the other is labelled as Reason \(R\).Assertion \(A\) : Boric acid is a weak acidReason \(R\) : Boric acid is not able to release \(H ^{+}\)ion on its own. It receives \(OH ^{-}\)ion from water and releases \(H ^{+}\)ion.In the light of the above statements, choose the most appropriate answer from the options given below.

1 Both \(A\) and \(R\) are correct and \(R\) is the correct explanation of \(A\)
2 Both \(A\) and \(R\) are correct but \(R\) is NOT the correct explanation of \(A\)
3 \(A\) is correct but \(R\) is not correct
4 \(A\) is not correct but \(R\) is correct
11. THE P-BLOCK ELEMENTS

190066 Borazine, also known as inorganic benzene, can be prepared by the reaction of \(3-equivalents\) of " \(X\) " with \(6-equivalents\) of "\(Y\)"."\(X\)" and "\(Y\)", respectively are.

1 \(B ( OH )_{3}\) and \(NH _{3}\)
2 \(B _{2} H _{6}\) and \(NH _{3}\)
3 \(B _{2} H _{6}\) and \(HN _{3}\)
4 \(NH _{3}\) and \(B _{2} O _{3}\)
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11. THE P-BLOCK ELEMENTS

190063 Given are two statements one is labelled as Assertion \(A\) and other is labelled as Reason \(R\).Assertion \(A\) :Magnesium can reduce \(Al _{2} O _{3}\) at a temperature below \(1350^{\circ} C\), while above \(1350^{\circ} C\) aluminium can reduce \(MgO\).Reason \(R\) : The melting and boiling points of magnesium are lower than those of aluminium.In light of the above statements. choose most appropriate answer from the options given below

1 Both \(A\) and \(R\) are correct. and \(R\) is correct explanation of \(A\).
2 Both \(A\) and \(R\) are correct. but \(R\) is NOT the correct explanation of \(A\).
3 \(A\) is correct \(R\) is not correct.
4 \(A\) is not correct. \(R\) is correct.
11. THE P-BLOCK ELEMENTS

190064 The geometry around boron in the product ' \(B\) ' formed from the following reaction is\(BF _{3}+ NaH \stackrel{450 K }{\longrightarrow} A + NaF\)\(A + NMe _{3} \rightarrow B\)

1 \(trigonal\,planar\)
2 \(tetrahedral\)
3 \(pyramidal\)
4 \(square\,planar\)
11. THE P-BLOCK ELEMENTS

190065 Given below are two statements: one is labelled as Assertion \(A\) and the other is labelled as Reason \(R\).Assertion \(A\) : Boric acid is a weak acidReason \(R\) : Boric acid is not able to release \(H ^{+}\)ion on its own. It receives \(OH ^{-}\)ion from water and releases \(H ^{+}\)ion.In the light of the above statements, choose the most appropriate answer from the options given below.

1 Both \(A\) and \(R\) are correct and \(R\) is the correct explanation of \(A\)
2 Both \(A\) and \(R\) are correct but \(R\) is NOT the correct explanation of \(A\)
3 \(A\) is correct but \(R\) is not correct
4 \(A\) is not correct but \(R\) is correct
11. THE P-BLOCK ELEMENTS

190066 Borazine, also known as inorganic benzene, can be prepared by the reaction of \(3-equivalents\) of " \(X\) " with \(6-equivalents\) of "\(Y\)"."\(X\)" and "\(Y\)", respectively are.

1 \(B ( OH )_{3}\) and \(NH _{3}\)
2 \(B _{2} H _{6}\) and \(NH _{3}\)
3 \(B _{2} H _{6}\) and \(HN _{3}\)
4 \(NH _{3}\) and \(B _{2} O _{3}\)
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