1
AIEEE 2005
MCQ (Single Correct Answer)
+4
-1
The oxidation state of chromium in the final product formed the reaction between $$K{\rm I}$$ and acidified potassium dichromate solution is :
A
$$+3$$
B
$$+2$$
C
$$+6$$
D
$$+4$$
2
AIEEE 2005
MCQ (Single Correct Answer)
+4
-1
Calomel $$\left( {H{g_2}C{l_2}} \right)$$ on reaction with ammonium hydroxide gives :
A
$$HgO$$
B
$$H{g_2}O$$
C
$$N{H_2} - Hg - Hg - Cl$$
D
$$HgN{H_2}Cl$$
3
AIEEE 2005
MCQ (Single Correct Answer)
+4
-1
On heating mixture of $$C{u_2}O$$ and $$C{u_2}S$$ will give :
A
$$C{u_2}S{O_3}$$
B
$$CuO + CuS$$
C
$$Cu + S{O_3}$$
D
$$Cu + S{O_2}$$
4
AIEEE 2004
MCQ (Single Correct Answer)
+4
-1
Cerium (Z = 58) is an important member of the lanthanoids. Which of the following statements about cerium is incorrect?
A
The common oxidation states of cerium are +3 and +4
B
Cerium (IV) acts as an oxidizing agent
C
The +4 oxidation state of cerium is not known in solutions
D
The +3 oxidation state of cerium is more stable than the +4 oxidation state
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