1
AP EAPCET 2022 - 5th July Morning Shift
MCQ (Single Correct Answer)
+1
-0

What are the oxidation numbers of S atoms in $$\mathrm{S}_4 \mathrm{O}_6^{2-}$$ ?

A
$$6,-1,-1,6$$
B
$$5,0,0,5$$
C
$$2.5,2.5,2.5,2.5$$
D
$$7,-2,-2,7$$
2
AP EAPCET 2022 - 4th July Evening Shift
MCQ (Single Correct Answer)
+1
-0

How many grams of Mg is required to completely reduce $$100 \mathrm{~mL}, 0.1 \mathrm{~M} \mathrm{~NO}_3^{-}$$ solution using the following reaction?

$$\mathrm{NO}_3^{-}+\mathrm{Mg} \longrightarrow \mathrm{Mg}^{2+}+\mathrm{NH}_3$$

A
0.96
B
0.62
C
0.24
D
0.75
3
AP EAPCET 2022 - 4th July Evening Shift
MCQ (Single Correct Answer)
+1
-0

What is the oxidation state of S in the sulphur containing product of the following reaction?

$$\mathrm{SO}_3^{2-}(a q)+\mathrm{Br}_2(l)+\mathrm{H}_2 \mathrm{O} \longrightarrow$$

A
+6
B
+4
C
+2.5
D
+2
4
AP EAPCET 2022 - 4th July Evening Shift
MCQ (Single Correct Answer)
+1
-0

In the reaction of phosphorus with conc. $$\mathrm{HNO}_3$$, the oxidised and reduced products respectively are

A
$$\mathrm{H}_3 \mathrm{PO}_4, \mathrm{NO}_2$$
B
$$\mathrm{H}_3 \mathrm{PO}_2, \mathrm{NO}$$
C
$$\mathrm{H}_3 \mathrm{PO}_3, \mathrm{~N}_2 \mathrm{O}$$
D
$$\mathrm{HPO}_3, \mathrm{NO}$$
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