Given below are two statements:

Statement I: CeO₂ can be used for the oxidation of aldehydes and ketones.

Statement II: Aqueous solution of EuSO₄ is a strong reducing agent.

In the light of the above statements, choose the correct answer from the options given below:

1. Statement I is false but statement II is true

2. Statement I is true but statement II is false

3. Both statement I and statement II are true

4. Both statement I and statement II are false

In basic medium CrO₄²⁻ oxidizes S₂O₃^2– to form S₂O₃²⁻  to form  SO₄²⁻  and itself changes into Cr(OH)₄⁻ . The volume of 0.154 M  CrO₄²⁻ required to react with 40 mL of 0.25 M S₂O₃²⁻ is: 

(Rounded-off to the nearest integer)

1. 178 
2. 173 
3. 169 
4. 181

The major components of German Silver are:

1. Ge, Cu and Ag

2. Zn, Ni and Ag

3. Cu, Zn and Ni

4. Cu, Zn and Ag

In which of the following order the given complex ions are arranged correctly with respect to their decreasing spin only magnetic moment?

(i) [FeF₆]^3–
(ii) [Co(NH₃)₆]³⁺
(iii) [NiCl₄]^2–
(iv) [Cu(NH₃)₄]²⁺

1. (i) > (iii) > (iv) > (ii)

2. (ii) > (iii) > (i) > (iv)

3. (iii) > (iv) > (ii) > (i)

4. (ii) > (i) > (iii) > (iv)

In a mildly alkaline medium, thiosulphate ion is oxidized by ${\mathrm{MnO}}_4^{-}$ to "A". The oxidation state of sulphur in "A" is:

The major components in "Gun Metal" are :

3. Cu, Zn and Ni

2. Cu, Sn and Zn

3. Al, Cu, Mg and Mn

4. Cu, Ni and Fe

The electrode potential of M²⁺ / M of 3d-series elements shows positive value of :

1. Zn

2. Fe

3. Co

4. Cu

In context with the transition elements, which of the following statements is incorrect?

Which of the following group of transition metals is called coinage metals ? 

1.  Cu , Ag, Au 

2. Ru , Rh, Pd 

3. Fe , Co , Ni 

4. Os , Ir , Pt