AP EAPCET 2024 - 20th May Morning Shift | Some Basic Concepts of Chemistry Question 9 | Chemistry

The density of nitric acid solution is $1.5 \mathrm{~g} \mathrm{~mL}^{-1}$. Its weight percentage is 68 . What is the approximate concentration (in $\mathrm{mol} \mathrm{L}^{-1}$ ) of nitric acid ?

$$ (\mathrm{N}=14 \mathrm{u} ; \mathrm{O}=16 \mathrm{u} ; \mathrm{H}=1 \mathrm{u}) $$

14.2

11.6

18.2

16.2

AP EAPCET 2024 - 18th May Morning Shift

MCQ (Single Correct Answer)

-0

A hydrocarbon containing C and H has $92.3 \% \mathrm{C}$ When 39 g of hydrocarbon was completely burnt in 0 $X$ moles of water and $Y$ moles of $\mathrm{CO}_2$ were formed $\mathrm{H}_2$ with Na metal, What is the weight (in g) of ounp ${ }^{\circ}$ consumed $)(\mathrm{C}=12 \mathrm{u}: \mathrm{H}=1 \mathrm{f})$

120

240

360

489

AP EAPCET 2024 - 18th May Morning Shift

MCQ (Single Correct Answer)

-0

The concentration of 1 L of $\mathrm{CaCO}_3$ solution is 1000 ppm . What is its concentration in mol $\mathrm{L}^{-1}$ ?

$$ (\mathrm{Ca}=40 \mathrm{u}, \mathrm{O}=16 \mathrm{u}, \mathrm{C}=12 \mathrm{u}) $$

$10^{-3}$

$10^{-1}$

$10^{-4}$

$10^{-2}$

AP EAPCET 2022 - 5th July Morning Shift

MCQ (Single Correct Answer)

-0

50 g of a substance is dissolved in 1 kg of water at $$+90^{\circ} \mathrm{C}$$. The temperature is reduced to $$+10^{\circ} \mathrm{C}$$. The density is increased from 1.1 to $$1.15 \mathrm{~g} \mathrm{~cc}^{-1}$$. What is the % change of molarity of the solution?

4.5

7.3

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