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Consider the following statements: Ul...

Consider the following statements:
Ultrasonic waves can be used to
(1) Transform two immiscible liquids like water and oil into a stable emulsion
(2) Detect blow holes and cracks inside mould
(3) Remove dirt , stain and dust particles in clothes of these statements .

A

1 and 2 are correct .

B

1 and 3 are correct

C

2 and 3 are correct

D

1,2 and 3 are correct

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The correct Answer is:
D
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The boiling point elevation and freezing point depression of solutions have a number of partical applications. Ethylene glycol (CH_(2)OH-CH_(2)OH) is used in automobile radiatiors as an antifreeze because it lowers the freezing point of the coolant. The same substance also helps to prevent the radiator coolant from boiling away by elevating the boiling point. Ethylene glycol has low vapour pressure. We can also use glycerol as an antifreeze. In order for the boiling point elevation to occur, the solute must be non-volatile, but no such restriction applies to freezing point depression. For example, methanol (CH_(3)OH) , a fairly volatile liquid that boils only at 65^(@)C , is sometimes used as an antifreeze in automobile radiators. 124 g each of the two reagents glycol and glycerol are added in 5 kg of water of the radiators in two cars. Which of the following statements is wrong?

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