syrup Search

Q:

Which of the following is used in the preparation of tincture iodine, cough syrup and many tonics?

A) Methanol	B) Ethanoic acid
C) Acetic acid	D) Ethanol

Answer & Explanation Answer: D) Ethanol

Explanation:

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Filed Under: Chemistry
Exam Prep: Bank Exams

Q:

There are three bottles of mixture of syrup and water of ratios 2:3, 3:4 and 7:5. 10 Litres of first and 21 Litres of second bottles are taken. How much quantity from third bottle is to be taken so that final mixture from three bottles will be of ratios 1:1.

A) 25 Litres	B) 20 Litres
C) 35 Litres	D) 30 Litres

Answer & Explanation Answer: D) 30 Litres

Explanation:

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Filed Under: Alligation or Mixture
Exam Prep: Bank Exams

Q:

A vessel is filled with liquid, 3 parts of which are water and 5 parts of syrup. How much of the mixture must be drawn off and replaced with water so that the mixture may be half water and half syrup?

A) 1/3	B) 1/4
C) 1/5	D) 1/7

Answer & Explanation Answer: C) 1/5

Explanation:

Suppose the vessel initially contains 8 litres of liquid.

Let x litres of this liquid be replaced with water.
Quantity of water in new mixture = $(3 - \frac{3 x}{8} + x)$ litres.

Quantity of syrup in new mixture = $(5 - \frac{5 x}{8})$ litres.

$(3 - \frac{3 x}{8} + x) = (5 - \frac{5 x}{8})$

=> 5x + 24 = 40 - 5x

=> 10x = 16 => x = 8/5

So, part of the mixture replaced = $(\frac{8}{5} \times \frac{1}{8})$ = 1/5.

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Filed Under: Alligation or Mixture

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