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

190057 Choose the correct statement:

1 Diamond is covalent and graphite is ionic.
2 Diamond is \(s p^{3}\) hybridised and graphite is \(s p^{2}\) hybridized.
3 Both diamond and graphite are used as dry lubricants.
4 Diamond and graphite have two dimensional network.
11. THE P-BLOCK ELEMENTS

190061 \(BeCl _{2}\) reacts with \(LiAlH _{4}\) to give ....

1 \(Be + Li \left[ AlCl _{4}\right]+ H _{2}\)
2 \(Be + AlH _{3}+ LiCl + HCl\)
3 \(BeH _{2}+ LiCl + AlCl _{3}\)
4 \(BeH _{2}+ Li \left[ AlCl _{4}\right]\)
11. THE P-BLOCK ELEMENTS

190068 When borax is heated with \(CoO\) on a platinum loop, blue coloured bead formed is largely due to

1 \(B _{2} O _{3}\)
2 \(Co \left( BO _{2}\right)_{2}\)
3 \(CoB _{4} O _{7}\)
4 \(Co [ B _{4} O _{5}( OH )_{4}]\)
11. THE P-BLOCK ELEMENTS

190073 Given below are two statements:Statement \(I\) : Nickel is being used as the catalyst for producing syn gas and edible fats.Statement \(II\) : Silicon forms both electron rich and electron deficient hydrides.In the light of the above statements, choose the most appropriate answer from the options given below:

1 Both the statements \(I\) and \(II\) are correct
2 Statement \(I\) is incorrect but statement \(II\) is correct
3 Both the statements \(I\) and \(II\) are incorrect
4 Statement \(I\) is correct but statement \(II\) is incorrect
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11. THE P-BLOCK ELEMENTS

190057 Choose the correct statement:

1 Diamond is covalent and graphite is ionic.
2 Diamond is \(s p^{3}\) hybridised and graphite is \(s p^{2}\) hybridized.
3 Both diamond and graphite are used as dry lubricants.
4 Diamond and graphite have two dimensional network.
11. THE P-BLOCK ELEMENTS

190061 \(BeCl _{2}\) reacts with \(LiAlH _{4}\) to give ....

1 \(Be + Li \left[ AlCl _{4}\right]+ H _{2}\)
2 \(Be + AlH _{3}+ LiCl + HCl\)
3 \(BeH _{2}+ LiCl + AlCl _{3}\)
4 \(BeH _{2}+ Li \left[ AlCl _{4}\right]\)
11. THE P-BLOCK ELEMENTS

190068 When borax is heated with \(CoO\) on a platinum loop, blue coloured bead formed is largely due to

1 \(B _{2} O _{3}\)
2 \(Co \left( BO _{2}\right)_{2}\)
3 \(CoB _{4} O _{7}\)
4 \(Co [ B _{4} O _{5}( OH )_{4}]\)
11. THE P-BLOCK ELEMENTS

190073 Given below are two statements:Statement \(I\) : Nickel is being used as the catalyst for producing syn gas and edible fats.Statement \(II\) : Silicon forms both electron rich and electron deficient hydrides.In the light of the above statements, choose the most appropriate answer from the options given below:

1 Both the statements \(I\) and \(II\) are correct
2 Statement \(I\) is incorrect but statement \(II\) is correct
3 Both the statements \(I\) and \(II\) are incorrect
4 Statement \(I\) is correct but statement \(II\) is incorrect
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11. THE P-BLOCK ELEMENTS

190057 Choose the correct statement:

1 Diamond is covalent and graphite is ionic.
2 Diamond is \(s p^{3}\) hybridised and graphite is \(s p^{2}\) hybridized.
3 Both diamond and graphite are used as dry lubricants.
4 Diamond and graphite have two dimensional network.
11. THE P-BLOCK ELEMENTS

190061 \(BeCl _{2}\) reacts with \(LiAlH _{4}\) to give ....

1 \(Be + Li \left[ AlCl _{4}\right]+ H _{2}\)
2 \(Be + AlH _{3}+ LiCl + HCl\)
3 \(BeH _{2}+ LiCl + AlCl _{3}\)
4 \(BeH _{2}+ Li \left[ AlCl _{4}\right]\)
11. THE P-BLOCK ELEMENTS

190068 When borax is heated with \(CoO\) on a platinum loop, blue coloured bead formed is largely due to

1 \(B _{2} O _{3}\)
2 \(Co \left( BO _{2}\right)_{2}\)
3 \(CoB _{4} O _{7}\)
4 \(Co [ B _{4} O _{5}( OH )_{4}]\)
11. THE P-BLOCK ELEMENTS

190073 Given below are two statements:Statement \(I\) : Nickel is being used as the catalyst for producing syn gas and edible fats.Statement \(II\) : Silicon forms both electron rich and electron deficient hydrides.In the light of the above statements, choose the most appropriate answer from the options given below:

1 Both the statements \(I\) and \(II\) are correct
2 Statement \(I\) is incorrect but statement \(II\) is correct
3 Both the statements \(I\) and \(II\) are incorrect
4 Statement \(I\) is correct but statement \(II\) is incorrect
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11. THE P-BLOCK ELEMENTS

190057 Choose the correct statement:

1 Diamond is covalent and graphite is ionic.
2 Diamond is \(s p^{3}\) hybridised and graphite is \(s p^{2}\) hybridized.
3 Both diamond and graphite are used as dry lubricants.
4 Diamond and graphite have two dimensional network.
11. THE P-BLOCK ELEMENTS

190061 \(BeCl _{2}\) reacts with \(LiAlH _{4}\) to give ....

1 \(Be + Li \left[ AlCl _{4}\right]+ H _{2}\)
2 \(Be + AlH _{3}+ LiCl + HCl\)
3 \(BeH _{2}+ LiCl + AlCl _{3}\)
4 \(BeH _{2}+ Li \left[ AlCl _{4}\right]\)
11. THE P-BLOCK ELEMENTS

190068 When borax is heated with \(CoO\) on a platinum loop, blue coloured bead formed is largely due to

1 \(B _{2} O _{3}\)
2 \(Co \left( BO _{2}\right)_{2}\)
3 \(CoB _{4} O _{7}\)
4 \(Co [ B _{4} O _{5}( OH )_{4}]\)
11. THE P-BLOCK ELEMENTS

190073 Given below are two statements:Statement \(I\) : Nickel is being used as the catalyst for producing syn gas and edible fats.Statement \(II\) : Silicon forms both electron rich and electron deficient hydrides.In the light of the above statements, choose the most appropriate answer from the options given below:

1 Both the statements \(I\) and \(II\) are correct
2 Statement \(I\) is incorrect but statement \(II\) is correct
3 Both the statements \(I\) and \(II\) are incorrect
4 Statement \(I\) is correct but statement \(II\) is incorrect
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