189643
Crystalline metal can be transformed into metallic glass by
1 Alloying
2 Pressing into thin plates
3 Slow cooling of molten metal
4 Very rapid cooling of a spray of the molten metal
Explanation:
Crystalline metal can be transformed into a metallic glass by very rapid colling of molten metal. On rapid cooling of molten metal gives amorphous solid which is nothing but metallic glass.
11. THE P-BLOCK ELEMENTS
189726
Glass is a
1 Micro-crystaline solid
2 Super cooled liquid
3 Gel
4 Polymeric mixture
Explanation:
Glass is a supercooled liquid. Supercooling is a process of lowering the temperature of a liquid or a gas below its freezing point without it becoming a solid.
11. THE P-BLOCK ELEMENTS
189727
\({H_2}{O_2}\) on reaction with \(PbS\) gives
1 \(PbO\)
2 \(PbS{O_4}\)
3 \(Pb{O_2}\)
4 \(PbHS{O_4}\)
Explanation:
(b) When hydrogen peroxide react with \(PbS\) then they form \(PbS{O_4}\).
11. THE P-BLOCK ELEMENTS
189753
Which of the following compounds has peroxide linkage
1 \(P{b_2}{O_3}\)
2 \(Si{O_2}\)
3 \(C{O_2}\)
4 \(Pb{O_2}\)
Explanation:
In \(H _2 O , SiO _2, CO _2\) and \(PbO _2\), oxidation states of oxygen are \(-2,-2,-2\) and \(-1\) respectively. Oxidation state of oxygen in peroxide linkage is \(-1\).
189643
Crystalline metal can be transformed into metallic glass by
1 Alloying
2 Pressing into thin plates
3 Slow cooling of molten metal
4 Very rapid cooling of a spray of the molten metal
Explanation:
Crystalline metal can be transformed into a metallic glass by very rapid colling of molten metal. On rapid cooling of molten metal gives amorphous solid which is nothing but metallic glass.
11. THE P-BLOCK ELEMENTS
189726
Glass is a
1 Micro-crystaline solid
2 Super cooled liquid
3 Gel
4 Polymeric mixture
Explanation:
Glass is a supercooled liquid. Supercooling is a process of lowering the temperature of a liquid or a gas below its freezing point without it becoming a solid.
11. THE P-BLOCK ELEMENTS
189727
\({H_2}{O_2}\) on reaction with \(PbS\) gives
1 \(PbO\)
2 \(PbS{O_4}\)
3 \(Pb{O_2}\)
4 \(PbHS{O_4}\)
Explanation:
(b) When hydrogen peroxide react with \(PbS\) then they form \(PbS{O_4}\).
11. THE P-BLOCK ELEMENTS
189753
Which of the following compounds has peroxide linkage
1 \(P{b_2}{O_3}\)
2 \(Si{O_2}\)
3 \(C{O_2}\)
4 \(Pb{O_2}\)
Explanation:
In \(H _2 O , SiO _2, CO _2\) and \(PbO _2\), oxidation states of oxygen are \(-2,-2,-2\) and \(-1\) respectively. Oxidation state of oxygen in peroxide linkage is \(-1\).
NEET Test Series from KOTA - 10 Papers In MS WORD
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11. THE P-BLOCK ELEMENTS
189643
Crystalline metal can be transformed into metallic glass by
1 Alloying
2 Pressing into thin plates
3 Slow cooling of molten metal
4 Very rapid cooling of a spray of the molten metal
Explanation:
Crystalline metal can be transformed into a metallic glass by very rapid colling of molten metal. On rapid cooling of molten metal gives amorphous solid which is nothing but metallic glass.
11. THE P-BLOCK ELEMENTS
189726
Glass is a
1 Micro-crystaline solid
2 Super cooled liquid
3 Gel
4 Polymeric mixture
Explanation:
Glass is a supercooled liquid. Supercooling is a process of lowering the temperature of a liquid or a gas below its freezing point without it becoming a solid.
11. THE P-BLOCK ELEMENTS
189727
\({H_2}{O_2}\) on reaction with \(PbS\) gives
1 \(PbO\)
2 \(PbS{O_4}\)
3 \(Pb{O_2}\)
4 \(PbHS{O_4}\)
Explanation:
(b) When hydrogen peroxide react with \(PbS\) then they form \(PbS{O_4}\).
11. THE P-BLOCK ELEMENTS
189753
Which of the following compounds has peroxide linkage
1 \(P{b_2}{O_3}\)
2 \(Si{O_2}\)
3 \(C{O_2}\)
4 \(Pb{O_2}\)
Explanation:
In \(H _2 O , SiO _2, CO _2\) and \(PbO _2\), oxidation states of oxygen are \(-2,-2,-2\) and \(-1\) respectively. Oxidation state of oxygen in peroxide linkage is \(-1\).
189643
Crystalline metal can be transformed into metallic glass by
1 Alloying
2 Pressing into thin plates
3 Slow cooling of molten metal
4 Very rapid cooling of a spray of the molten metal
Explanation:
Crystalline metal can be transformed into a metallic glass by very rapid colling of molten metal. On rapid cooling of molten metal gives amorphous solid which is nothing but metallic glass.
11. THE P-BLOCK ELEMENTS
189726
Glass is a
1 Micro-crystaline solid
2 Super cooled liquid
3 Gel
4 Polymeric mixture
Explanation:
Glass is a supercooled liquid. Supercooling is a process of lowering the temperature of a liquid or a gas below its freezing point without it becoming a solid.
11. THE P-BLOCK ELEMENTS
189727
\({H_2}{O_2}\) on reaction with \(PbS\) gives
1 \(PbO\)
2 \(PbS{O_4}\)
3 \(Pb{O_2}\)
4 \(PbHS{O_4}\)
Explanation:
(b) When hydrogen peroxide react with \(PbS\) then they form \(PbS{O_4}\).
11. THE P-BLOCK ELEMENTS
189753
Which of the following compounds has peroxide linkage
1 \(P{b_2}{O_3}\)
2 \(Si{O_2}\)
3 \(C{O_2}\)
4 \(Pb{O_2}\)
Explanation:
In \(H _2 O , SiO _2, CO _2\) and \(PbO _2\), oxidation states of oxygen are \(-2,-2,-2\) and \(-1\) respectively. Oxidation state of oxygen in peroxide linkage is \(-1\).