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Standard XII

Mathematics

Different Types of Intervals in Inequality

HNO3 used as ...

Question

$H N O_{3}$ used as a reagent has specific gravity of $1.42$ g/mL and contains $70$ % by strength $H N O_{3}$ .
Calculate the value of $100 x$ if $x$ mL is the volume of acid that contains $63$ g pure acid :

63.38

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63.00

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63.20

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None of the above

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Solution

The correct option is A $63.38$
$70 \times 1.42$ g of pure acid is present in $100$ mL.
$63$ g of pure acid is present in $= \frac{100 \times 63}{70 \times 1.42}$ $= 63.38$ mL

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HNO3 used as a reagent has specific gravity of 1.42 g/mL and contains 70% by strength HNO3. Calculate the value of 100 x if x mL is the volume of acid that contains 63 g pure acid :

The correct option is A 63.3870×1.42 g of pure acid is present in 100 mL.63 g of pure acid is present in =100×6370×1.42 =63.38 mL

$H N O_{3}$ used as a reagent has specific gravity of $1.42$ g/mL and contains $70$ % by strength $H N O_{3}$ .
Calculate the value of $100 x$ if $x$ mL is the volume of acid that contains $63$ g pure acid :

The correct option is A $63.38$
$70 \times 1.42$ g of pure acid is present in $100$ mL.
$63$ g of pure acid is present in $= \frac{100 \times 63}{70 \times 1.42}$ $= 63.38$ mL