In three test tubes $P, Q$ , and $R$ iron nails, water, oil and anhydrous calcium chloride is taken. Among these test tubes, in which test tubes corrosion of nails will not take place?

$P, Q$ and $R$
$P$ and $R$
$P$ and $Q$
$Q$ and $R$

P, Q

and

R

P

and

R

Q

and

R

P

and

Q

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Solution

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The correct option is D $Q$ and $R$
Conditions necessary for the rusting of iron:
$∙$ Presence of air (or oxygen)
$∙$ Presence of water (or moisture).

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In three test tubes P,Q, and R iron nails, water, oil and anhydrous calcium chloride is taken. Among these test tubes, in which test tubes corrosion of nails will not take place?P,Q and RP and RP and QQ and R

The correct option is D Q and RConditions necessary for the rusting of iron:∙ Presence of air (or oxygen)∙ Presence of water (or moisture).

In three test tubes $P, Q$ , and $R$ iron nails, water, oil and anhydrous calcium chloride is taken. Among these test tubes, in which test tubes corrosion of nails will not take place?

$P, Q$ and $R$
$P$ and $R$
$P$ and $Q$
$Q$ and $R$

The correct option is D $Q$ and $R$
Conditions necessary for the rusting of iron:
$∙$ Presence of air (or oxygen)
$∙$ Presence of water (or moisture).