Match Column I (Catalyst) with Column II (Process), and mark the appropriate option:

	Column I - (Catalyst)		Column II - (Process)
A.	Ni in the presence of hydrogen	1.	Contact process
B.	Cu2Cl2	2.	Vegetable oil to ghee
C.	V2O5	3.	Sandmeyer reaction
D.	Finely divided iron	4.	Haber's process
		5.	Decomposition of  KClO3

 

Codes:

	A	B	C	D
1.	3	4	2	5
2.	2	3	1	4
3.	5	4	3	2
4.	4	5	3	2

Match Compound/element in Column-I with uses in Column-II and select the best match from the codes given:

Identify the incorrect statement from the following:

Match the following aspects with the respective metal.

Select the correct option:

Select the element with the highest second ionization enthalpy from the following options.

1. Mn

2. Fe

3. Cr

4. V

 A pair of ions have the same magnetic moment among the following :
 

1.  \(Cu^{2+}, Ti^{3+}\)

2. \( Ti^{3+}, Ni^{2+}\)

3. \( Ti^{4+}, Cu^{2+}\)

4. \( Mn^{2+}, Cu^{2+}\)

Acidified K₂Cr₂O₇ solution changes Sn²⁺ to:

1. Sn

2. Sn³⁺

3. Sn⁴⁺

4. Sn²⁺

Colourless ion among the following is:

The oxo metal anions of the 3d series in which the metal exhibits an oxidation state equal to its group number is /are: