1
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
$$x=2, y=6$$
2
AP EAPCET 2021 - 20th August Morning Shift
MCQ (Single Correct Answer)
+1
-0

An alloy of metals X and Y weighs 12 g and contains atoms X and Y in the ratio of 2 : 5. The percentage of metal X in the alloy is 20 by mass. If the atomic mass of X is 40 amu what is the atomic mass of metal Y ?

A
64 amu
B
32 amu
C
60 amu
D
50 amu
3
AP EAPCET 2021 - 19th August Evening Shift
MCQ (Single Correct Answer)
+1
-0

If 0.2 moles of sulphuric acid is poured into 250 mL of water, calculate the concentration of the solution.

A
0.8 N
B
0.8 M
C
8 M
D
0.2 N
4
AP EAPCET 2021 - 19th August Morning Shift
MCQ (Single Correct Answer)
+1
-0

When 20 g of CaCO$$_3$$ is treated with 20 g of HCl, the mass of CO$$_2$$ formed would be

A
10 g
B
8.8 g
C
22.2 g
D
20 g
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