Why two holes are made in an oil can to pour out oil from it?

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Solution

With only one hole the oil will flow out quite slow as inwards movement of air and outward movement of oil is through the same hole. Now, by making another hole we are actually increasing the rate of flow of oil as air can flow through the other hole.

So, this is why two holes are made.

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Two holes are made in a sealed oil can to remove oil from it

Why two holes are made in a sealed tin cane to take out the oil from it?

Give reasons for the following :

(a) A balloon collapses when air is removed from it.

(b) Water does not run out of a drpooer unless its rubber bulb is pressed.

Explain the following :
(i) A balloon collapses when air is removed from it.
(ii) Water does not run out of a dropper unless its rubber bulb is pressed.
(iii) Two holes are made in a completely filled sealed tin can to take out oil from it.

if oil is being poured in water they don't mix but when detergent is added to it the water and oil get mixed why?

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Why two holes are made in an oil can to pour out oil from it?

With only one hole the oil will flow out quite slow as inwards movement of air and outward movement of oil is through the same hole. Now, by making another hole we are actually increasing the rate of flow of oil as air can flow through the other hole. So, this is why two holes are made.

With only one hole the oil will flow out quite slow as inwards movement of air and outward movement of oil is through the same hole. Now, by making another hole we are actually increasing the rate of flow of oil as air can flow through the other hole.

So, this is why two holes are made.