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1
AP EAPCET 2022 - 4th July Evening Shift
MCQ (Single Correct Answer)
+1
-0

The empirical formula of calgon is

A
$$\mathrm{Na}_2 \mathrm{PO}_3$$
B
$$\mathrm{NaP}_2 \mathrm{O}_3$$
C
$$\mathrm{NaPO}_3$$
D
$$\mathrm{Na}_3 \mathrm{PO}_3$$
2
AP EAPCET 2022 - 4th July Morning Shift
MCQ (Single Correct Answer)
+1
-0

The statement related to law of definite proportions is

A
the ratio of oxygen in $$\mathrm{H}_2 \mathrm{O}$$ and $$\mathrm{H}_2 \mathrm{O}_2$$ with respect to fixed mass of hydrogen atom is a whole number.
B
% of oxygen in $$\mathrm{H}_2 \mathrm{O}$$ is constant irrespective of the source.
C
equal volume of all gases at the same temperature and pressure should contain equal number of molecules.
D
matter can neither be created nor destroyed.
3
AP EAPCET 2022 - 4th July Morning Shift
MCQ (Single Correct Answer)
+1
-0

What are $$x$$ and $$y$$ in the following reaction?

$$x \mathrm{~Pb}_3 \mathrm{O}_4 \longrightarrow y \mathrm{PbO}+\mathrm{O}_2$$

A
$$x=3, y=6$$
B
$$x=2, y=4$$
C
$$x=2, y=5$$
D
$$x=2, y=6$$
4
AP EAPCET 2021 - 20th August Evening Shift
MCQ (Single Correct Answer)
+1
-0

If the volume of $$15.9 \mathrm{~g}$$ of carbon tetrachloride is $$10 \mathrm{~mL}$$, calculate its density.

A
$$31.8 \mathrm{~g} \mathrm{~mL}^{-1}$$
B
$$1.59 \mathrm{~g} \mathrm{~mL}^{-1}$$
C
$$0.159 \mathrm{~g} \mathrm{~mL}^{-1}$$
D
$$15.9 \mathrm{~g} \mathrm{~mL}^{-1}$$
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