Aerated water: any water artificially impregnated with a large amount of gas ( carbon dioxide) is aerated water. This gas is either artificially injected under pressure or occurring due to natural geological processes.
11. THE P-BLOCK ELEMENTS
189723
The compound which does not possess a peroxide linkage is
1 \(N{a_2}{O_2}\)
2 \(Cr{O_5}\)
3 \({H_2}S{O_5}\)
4 \(Pb{O_2}\)
Explanation:
A peroxide is a compound containing an oxygen-oxygen single bond or the peroxide anion The \(O - O\) group is called the peroxide group or peroxo group. \(PbO _2\) do not have peroxide linkage. Remaining all compounds have the \(O - O\) (peroxide linkage).
11. THE P-BLOCK ELEMENTS
189724
Silicon is an important constituent of
1 Rocks
2 Amalgams
3 Chlorophyll
4 Haemoglobin
Explanation:
Silicon is an important constituent of rock in form of silica \(SiO _2\). Amalgams contains \(Hg\). Haemoglobin contains iron. Chlorophyll contains \(Mg\).
11. THE P-BLOCK ELEMENTS
189725
Carborundum is
1 \(SiC\)
2 \(AlC{l_3}\)
3 \(A{l_2}{(S{O_4})_3}\)
4 \(A{l_2}{O_3}\,.\,2{H_2}O\)
Explanation:
Silicon carbide \(( SiC )\), also known as carborundum, is a semiconductor containing silicon and carbon. It occurs in nature as the extremely rare mineral moissanite.
11. THE P-BLOCK ELEMENTS
189728
Soldiers of Napolean army while at Alps during freezing winter suffered a serious problem as regards to the tin buttons of their uniforms. White metallic tin buttons got converted to grey powder. This transformation is related to
1 A change in the partial pressure of oxygen in the air
2 A change in the crystalline structure of tin
3 An interaction with nitrogen of the air at very low to temperatures
4 An interaction with water vapour contained in the humid air
Explanation:
(b) Grey tin is very brittle and easily crumbles down to a powder in very cold climates. \(\mathop {{\rm{Grey tin}}}\limits_{{\rm{(Cubic)}}} \) \( \rightleftharpoons \) \(\mathop {{\rm{White tin}}}\limits_{{\rm{(Tetragonal)}}}\) The change of white tin to grey tin is accompanied by increase in volume. This is called tin disease or tin plague.
Aerated water: any water artificially impregnated with a large amount of gas ( carbon dioxide) is aerated water. This gas is either artificially injected under pressure or occurring due to natural geological processes.
11. THE P-BLOCK ELEMENTS
189723
The compound which does not possess a peroxide linkage is
1 \(N{a_2}{O_2}\)
2 \(Cr{O_5}\)
3 \({H_2}S{O_5}\)
4 \(Pb{O_2}\)
Explanation:
A peroxide is a compound containing an oxygen-oxygen single bond or the peroxide anion The \(O - O\) group is called the peroxide group or peroxo group. \(PbO _2\) do not have peroxide linkage. Remaining all compounds have the \(O - O\) (peroxide linkage).
11. THE P-BLOCK ELEMENTS
189724
Silicon is an important constituent of
1 Rocks
2 Amalgams
3 Chlorophyll
4 Haemoglobin
Explanation:
Silicon is an important constituent of rock in form of silica \(SiO _2\). Amalgams contains \(Hg\). Haemoglobin contains iron. Chlorophyll contains \(Mg\).
11. THE P-BLOCK ELEMENTS
189725
Carborundum is
1 \(SiC\)
2 \(AlC{l_3}\)
3 \(A{l_2}{(S{O_4})_3}\)
4 \(A{l_2}{O_3}\,.\,2{H_2}O\)
Explanation:
Silicon carbide \(( SiC )\), also known as carborundum, is a semiconductor containing silicon and carbon. It occurs in nature as the extremely rare mineral moissanite.
11. THE P-BLOCK ELEMENTS
189728
Soldiers of Napolean army while at Alps during freezing winter suffered a serious problem as regards to the tin buttons of their uniforms. White metallic tin buttons got converted to grey powder. This transformation is related to
1 A change in the partial pressure of oxygen in the air
2 A change in the crystalline structure of tin
3 An interaction with nitrogen of the air at very low to temperatures
4 An interaction with water vapour contained in the humid air
Explanation:
(b) Grey tin is very brittle and easily crumbles down to a powder in very cold climates. \(\mathop {{\rm{Grey tin}}}\limits_{{\rm{(Cubic)}}} \) \( \rightleftharpoons \) \(\mathop {{\rm{White tin}}}\limits_{{\rm{(Tetragonal)}}}\) The change of white tin to grey tin is accompanied by increase in volume. This is called tin disease or tin plague.
Aerated water: any water artificially impregnated with a large amount of gas ( carbon dioxide) is aerated water. This gas is either artificially injected under pressure or occurring due to natural geological processes.
11. THE P-BLOCK ELEMENTS
189723
The compound which does not possess a peroxide linkage is
1 \(N{a_2}{O_2}\)
2 \(Cr{O_5}\)
3 \({H_2}S{O_5}\)
4 \(Pb{O_2}\)
Explanation:
A peroxide is a compound containing an oxygen-oxygen single bond or the peroxide anion The \(O - O\) group is called the peroxide group or peroxo group. \(PbO _2\) do not have peroxide linkage. Remaining all compounds have the \(O - O\) (peroxide linkage).
11. THE P-BLOCK ELEMENTS
189724
Silicon is an important constituent of
1 Rocks
2 Amalgams
3 Chlorophyll
4 Haemoglobin
Explanation:
Silicon is an important constituent of rock in form of silica \(SiO _2\). Amalgams contains \(Hg\). Haemoglobin contains iron. Chlorophyll contains \(Mg\).
11. THE P-BLOCK ELEMENTS
189725
Carborundum is
1 \(SiC\)
2 \(AlC{l_3}\)
3 \(A{l_2}{(S{O_4})_3}\)
4 \(A{l_2}{O_3}\,.\,2{H_2}O\)
Explanation:
Silicon carbide \(( SiC )\), also known as carborundum, is a semiconductor containing silicon and carbon. It occurs in nature as the extremely rare mineral moissanite.
11. THE P-BLOCK ELEMENTS
189728
Soldiers of Napolean army while at Alps during freezing winter suffered a serious problem as regards to the tin buttons of their uniforms. White metallic tin buttons got converted to grey powder. This transformation is related to
1 A change in the partial pressure of oxygen in the air
2 A change in the crystalline structure of tin
3 An interaction with nitrogen of the air at very low to temperatures
4 An interaction with water vapour contained in the humid air
Explanation:
(b) Grey tin is very brittle and easily crumbles down to a powder in very cold climates. \(\mathop {{\rm{Grey tin}}}\limits_{{\rm{(Cubic)}}} \) \( \rightleftharpoons \) \(\mathop {{\rm{White tin}}}\limits_{{\rm{(Tetragonal)}}}\) The change of white tin to grey tin is accompanied by increase in volume. This is called tin disease or tin plague.
NEET Test Series from KOTA - 10 Papers In MS WORD
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11. THE P-BLOCK ELEMENTS
189722
Which gas is used in excess water
1 \(C{O_2}\)
2 \(S{O_2}\)
3 \(CO\)
4 Water vapours
Explanation:
Aerated water: any water artificially impregnated with a large amount of gas ( carbon dioxide) is aerated water. This gas is either artificially injected under pressure or occurring due to natural geological processes.
11. THE P-BLOCK ELEMENTS
189723
The compound which does not possess a peroxide linkage is
1 \(N{a_2}{O_2}\)
2 \(Cr{O_5}\)
3 \({H_2}S{O_5}\)
4 \(Pb{O_2}\)
Explanation:
A peroxide is a compound containing an oxygen-oxygen single bond or the peroxide anion The \(O - O\) group is called the peroxide group or peroxo group. \(PbO _2\) do not have peroxide linkage. Remaining all compounds have the \(O - O\) (peroxide linkage).
11. THE P-BLOCK ELEMENTS
189724
Silicon is an important constituent of
1 Rocks
2 Amalgams
3 Chlorophyll
4 Haemoglobin
Explanation:
Silicon is an important constituent of rock in form of silica \(SiO _2\). Amalgams contains \(Hg\). Haemoglobin contains iron. Chlorophyll contains \(Mg\).
11. THE P-BLOCK ELEMENTS
189725
Carborundum is
1 \(SiC\)
2 \(AlC{l_3}\)
3 \(A{l_2}{(S{O_4})_3}\)
4 \(A{l_2}{O_3}\,.\,2{H_2}O\)
Explanation:
Silicon carbide \(( SiC )\), also known as carborundum, is a semiconductor containing silicon and carbon. It occurs in nature as the extremely rare mineral moissanite.
11. THE P-BLOCK ELEMENTS
189728
Soldiers of Napolean army while at Alps during freezing winter suffered a serious problem as regards to the tin buttons of their uniforms. White metallic tin buttons got converted to grey powder. This transformation is related to
1 A change in the partial pressure of oxygen in the air
2 A change in the crystalline structure of tin
3 An interaction with nitrogen of the air at very low to temperatures
4 An interaction with water vapour contained in the humid air
Explanation:
(b) Grey tin is very brittle and easily crumbles down to a powder in very cold climates. \(\mathop {{\rm{Grey tin}}}\limits_{{\rm{(Cubic)}}} \) \( \rightleftharpoons \) \(\mathop {{\rm{White tin}}}\limits_{{\rm{(Tetragonal)}}}\) The change of white tin to grey tin is accompanied by increase in volume. This is called tin disease or tin plague.
Aerated water: any water artificially impregnated with a large amount of gas ( carbon dioxide) is aerated water. This gas is either artificially injected under pressure or occurring due to natural geological processes.
11. THE P-BLOCK ELEMENTS
189723
The compound which does not possess a peroxide linkage is
1 \(N{a_2}{O_2}\)
2 \(Cr{O_5}\)
3 \({H_2}S{O_5}\)
4 \(Pb{O_2}\)
Explanation:
A peroxide is a compound containing an oxygen-oxygen single bond or the peroxide anion The \(O - O\) group is called the peroxide group or peroxo group. \(PbO _2\) do not have peroxide linkage. Remaining all compounds have the \(O - O\) (peroxide linkage).
11. THE P-BLOCK ELEMENTS
189724
Silicon is an important constituent of
1 Rocks
2 Amalgams
3 Chlorophyll
4 Haemoglobin
Explanation:
Silicon is an important constituent of rock in form of silica \(SiO _2\). Amalgams contains \(Hg\). Haemoglobin contains iron. Chlorophyll contains \(Mg\).
11. THE P-BLOCK ELEMENTS
189725
Carborundum is
1 \(SiC\)
2 \(AlC{l_3}\)
3 \(A{l_2}{(S{O_4})_3}\)
4 \(A{l_2}{O_3}\,.\,2{H_2}O\)
Explanation:
Silicon carbide \(( SiC )\), also known as carborundum, is a semiconductor containing silicon and carbon. It occurs in nature as the extremely rare mineral moissanite.
11. THE P-BLOCK ELEMENTS
189728
Soldiers of Napolean army while at Alps during freezing winter suffered a serious problem as regards to the tin buttons of their uniforms. White metallic tin buttons got converted to grey powder. This transformation is related to
1 A change in the partial pressure of oxygen in the air
2 A change in the crystalline structure of tin
3 An interaction with nitrogen of the air at very low to temperatures
4 An interaction with water vapour contained in the humid air
Explanation:
(b) Grey tin is very brittle and easily crumbles down to a powder in very cold climates. \(\mathop {{\rm{Grey tin}}}\limits_{{\rm{(Cubic)}}} \) \( \rightleftharpoons \) \(\mathop {{\rm{White tin}}}\limits_{{\rm{(Tetragonal)}}}\) The change of white tin to grey tin is accompanied by increase in volume. This is called tin disease or tin plague.