conversion of white tin to grey tin

conversion of stannous to stannic

emission of sound while bending a tin rod

Chemistry - Pblock Elements Xi - Quiz-5

Quartz is made of silicon and oxygen joined in a network arrangement that is similar to:

0%

Diamond
0%

Graphite
0%

$O_{2}$
0%

None of the above

The product obtained when silica reacts with hydrogen fluoride is:

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$S i F_{4}$
0%

$H_{2} S i F_{6}$
0%

$H_{2} S i F_{4}$
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$H_{2} S i F_{3}$

Silica reacts with Mg to form a magnesium compound (A). (A) react with dil. HCl and forms (B). (B) is:

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MgSiO
0%

MgO
0%

$M g C l_{2}$
0%

$S i C l_{4}$

Silica is reacted with sodium carbonate. Which is the gas liberated?

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CO
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$O_{2}$
0%

$O_{3}$
0%

$C O_{2}$

Quartz is an example of:

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chain silicate
0%

sheet silicate
0%

cyclic silicate
0%

three dimensional network silicate

The products of the following reaction are;

$S i O_{2} + C \overset{∆}{\to}$

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SiC and $C O_{2}$
0%

$S i O a n d C O$
0%

SiC and CO
0%

Si and $C O_{2}$

Which of the following shows bonding in silicone?

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$S i - C - S i - O - S i$
0%

$S i - C - S i - C - S i$
0%

$l l l - S i - O - S i - O - S i -$
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$S i - S i - S i - S i$

$R_{3} S i C l$ on polymerisation after hydrolysis forms:

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$R_{3} S i O H$
0%

$R_{3} S i - O - S i R_{3}$
0%

$R_{2} S i = O$
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None of these

Among the following substituted silanes the one which will give rise to cross linked silicone polymer on hydrolysis is:

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$R_{4} S i$
0%

$R S i C l_{3}$
0%

$R_{2} S i C l_{2}$
0%

$R_{3} S i C l$

The most commonly used reducing agent is:

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$S n C l_{4}$
0%

HF
0%

$S n C l_{2}$
0%

$C l_{2}$

Tin plague is the:

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conversion of stannous to stannic
0%

conversion of white tin to grey tin
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emission of sound while bending a tin rod
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atmospheric oxidation of tin

When chlorine is passed through molten tin, the product obtained is:

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$S n C l_{2}$
0%

$[S b C l$ ₄]2-
0%

${[S n C l_{6}]}^{2 -}$
0%

$S n C l_{4}$

Iodine is decolourised by:

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$Z n C l_{2}$
0%

$H g C l_{2}$
0%

$S n C l_{2}$
0%

$A l C l_{3}$

Addition of excess of sodium hydroxide solution to stannous chloride solution, gives:

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$S n {(O H)}_{2}$
0%

$S n O_{2} . H_{2} O$
0%

$N a_{2} S n O_{3}$
0%

$N a_{2} S n O_{2}$

When ${SnCl}_{2}$ reacts with ${HgCl}_{2}$ , the product formed is-

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$Sn + {HgCl}_{4}$
0%

$Sn + {Cl}_{2} + {Hg}_{2} {Cl}_{2}$
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${SnCl}_{4} and {Hg}_{2} {Cl}_{2}$
0%

None of the above

The soldiers of the Napolean army while at the Alps during freezing winter suffered a serious problem with regards to the tin buttons of their uniforms. White Metallic tin buttons get converted to grey powder. This transformation is related to-

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An interaction with water vapour contained in humid air
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A change in the crystalline structure of tin
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A change in the partial pressure of $O_{2}$ in the air
0%

An interaction with $N_{2}$ of air at low temperature

Most ionic chloride is:

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$P b C l_{2}$
0%

$C C l_{4}$
0%

$P b C l_{4}$
0%

$S i C l_{4}$

The amphoteric oxide among the following is -

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${CO}_{2}$
0%

${PbO}_{2}$
0%

${SiO}_{2}$
0%

${SeO}_{2}$

Which is not used as pigment in paints?

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Lead dioxide
0%

White lead
0%

Lead chromate
0%

$P b_{3} O_{4}$

Lead pipes are corroded by:

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$H_{2} S O_{4}$
0%

HCl
0%

$C H_{3} C O O H$
0%

Pure water

Compound of lead used in match industry is:

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PbO
0%

$P b O_{2}$
0%

$P b C l_{2}$
0%

None of these

Lead may be replaced from its salt solution by:

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Zn
0%

Au
0%

Ag
0%

Cu

Litharge is not commonly used in:

0%

manufacture of special glasses
0%

glazing pottery
0%

preparing paints
0%

lead storage battery

When $P b O_{2}$ reacts with conc. $H N O_{3}$ , the gas evolved in

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$N O_{2}$
0%

$O_{2}$
0%

$N_{2}$
0%

$N_{2} O$

The product formed on heating Pb(NO₃)₂are:

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$P b O, N_{2}, O_{2}$
0%

Pb(NO₂ )_2,O₂
0%

$P b O, N O_{2}, O_{2}$
0%

$P b, N_{2}, O_{2}$

Aluminium chloride in acidified aqueous solution forms a complex 'A'. The formula of A and hybridisation state of Al in 'A' is respectively-

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[Al(H₂O)₆]³⁺, sp³d²
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[Al(H₂O)₄]³⁺, sp³
0%

[Al(H₂O)_4^]³⁺, dsp²
0%

[Al(H₂O)]³⁺, d²sp³

Which of the following compounds is used in cosmetic surgery?

0%

Silica
0%

Silicates
0%

Silicones
0%

Zeolites

Consider the following reaction

${BF}_{3} \overset{{Al}_{2} {Cl}_{4}}{\to} (A) \to_{discharged}^{H_{2} - gas} (B) \overset{H_{2} O}{\to} (C)$

Select the correct statement.

0%

The compound (A) is ${BCl}_{3}$
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The compound (C) is $B_{2} H_{6}$
0%

The compound (C) is ${[B_{2} {(OH)}_{4}]}^{-}$
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The compound (B) is $B_{2} {Cl}_{4}$

Tin dissolves in concentrated and dil. $H_{2} {SO}_{4}$ as well as ${HNO}_{3}$ . Which of the following is not the exact product of this process?

0%

${SnSO}_{4}$
0%

$Sn {({SO}_{4})}_{2}$
0%

$Sn {({NO}_{3})}_{3}$
0%

$H_{2} {SnO}_{3}$

Mellitic acid is formed by the oxidation of graphite with -

0%

Chromic acid
0%

Alkaline ${KMnO}_{4}$
0%

Fuming ${HNO}_{3}$
0%

dil. ${HNO}_{3}$

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Practice Chemistry Quiz Questions and Answers

0:0:1

Practice Chemistry Quiz Questions and Answers

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