The soldiers of Napoleon 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:

a change in the crystalline structure of tin

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an interaction with nitrogen of the air at very low temperatures

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a change in the partial pressure of oxygen in the air

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an interaction with water vapour contained in the humid air

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Solution

The correct option is A a change in the crystalline structure of tin
As temperature decreases, white tin $(β - f o r m)$ changes to grey tin $(α - f o r m)$ .
$β - S n ⟶ α - S n a t 132^{o} C$

$α - S n$ has much less density than $β - S n$ . It undergoes a change in crystalline structure.

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Similar questions

Q. The soldiers of Napolean army while at Alps during freezing winter suffered a serious problem as regards to the tin buttons of their uniform. White metallic tin buttons got converted to grey powder. This transformation is related to:

Q. Soldiers of Napolean army which at Alps during freezing winter suffered a serious problem as regards to the tin buttons of their uniforms. White metallic tin buttons got covered by grey powder. This transformation is related to:

Q. On a day during the Monsoon season, the relative humidity at a place is

90

% and the temperature is

15^{o} (C)

The saturation vapour pressure of water at this temperature is

0.016 \times 10^{5} P a

. The partial pressure of water vapour in the air on that day is

Q. A sample of air contains nitrogen, oxygen and saturated with water vapour under a total pressure of

640

mm. If the vapour pressure of water at that temperature is

40

mm and mole ratio of

N_{2}

O_{2}

3 : 1

, the partial pressure of nitrogen in the sample is:

A sample of air contains nitrogen, oxygen and saturated with water vapour under a total pressure of 640 mm. If the vapour pressure of water at that temperature is 40 mm and the molecular ratio of $N_{2} : O_{2}$ is 3 : 1. Find the partial pressure of nitrogen in the sample.

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The soldiers of Napoleon army while at Alps during freezing winter suffered a serious problem asregards to the tin buttons of their uniforms. White metallic tin buttons got converted to grey powder.This transformation is related to:

The correct option is A a change in the crystalline structure of tinAs temperature decreases, white tin (β−form) changes to grey tin (α−form).β−Sn⟶α−Snat132oCα−Sn has much less density than β−Sn. It undergoes a change in crystalline structure.

The soldiers of Napoleon 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:

The correct option is A a change in the crystalline structure of tin
As temperature decreases, white tin $(β - f o r m)$ changes to grey tin $(α - f o r m)$ .
$β - S n ⟶ α - S n a t 132^{o} C$

$α - S n$ has much less density than $β - S n$ . It undergoes a change in crystalline structure.