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

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P

and

R

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P

and

Q

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Q

and

R

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Solution

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?

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?

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).