Primary component of Mischmetal that is commonly utilised in gas lighters is:

1. Cerium 
2. Iron
3. Samarium
4. Lanthanum

Subtopic:  d-Block Elements- Properties & Uses |
From NCERT
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Hints
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh

The correct statement is

1. Green vitriol and blue vitriol are isomorphus

2. KMnO4 and K2Cr2O7 are coloured due to d-d transitions

3. Cu2Cl2 and Ag2S are coloured

4. Upon strong heating paramagnetic gases are evolved by CuSO4 and AgNO3

Subtopic:  d-Block Elements- Properties & Uses |
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Hints

Which is true about the ionic radius of M2+?

1. Ni2+<Cu2+<Zn2+

2. Ni2+>Cu2+>Zn2+

3. Cu2+<Ni2+<Zn2+

4. Zn2+<Ni2+<Cu2+

Subtopic:  d-Block Elements- Properties & Uses |
 53%
From NCERT
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Hints
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh

Which of the following will not give a positive chromyl chloride test?

(1) CuCl2

(2) ZnCl2

(3) HgCl2

(4) NH4Cl

Subtopic:  d-Block Elements- Properties & Uses |
 54%
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Hints

Which of the following can not exist together in aqueous solution?

1. HgCl2 and SnCl2

2. HgCl2 and SnCl4

3. SnCl4 and FeCl3

4. SnCl4 and PbCl4

Subtopic:  d-Block Elements- Properties & Uses |
 52%
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Hints

A substance is found to have a magnetic moment of 3.9 B.M. The ion may be 

1. Fe+3

2. Mn+2

3. Co+2

4. Cu+2

Subtopic:  d-Block Elements- Properties & Uses |
 75%
From NCERT
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Hints
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh

The inner transition element is not represented by the atomic
number among 59, 74, 95, 102, and 104.

1. 59

2. 95

3. 102

4. 104

Subtopic:  Lanthanoid & Actinoids Contraction |
 69%
From NCERT
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Hints
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh

Which of the following is the correct order of second ionization energy?

1. V > Cr > Mn

2. V < Cr < Mn

3. V < Cr > Mn

4. V > Cr < Mn

Subtopic:  d-Block Elements- Properties & Uses |
 72%
From NCERT
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Hints
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh

Dimethyl glyoxime in a suitable solvent was refluxed for 10 minutes with pure pieces of nickel sheet, it will result in

1. Red precipitate

2. Blue precipitate

3. Yellow precipitate

4. No precipitate

Subtopic:  d-Block Elements- Properties & Uses |
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Hints

While Fe3+ is stable, Mn3+ is not stable in acidic solution because

1. O2 oxidises Mn2+ to Mn3+

2. O2 oxidises both Mn+2 to Mn+3 and Fe2+ to Fe3+

3. Fe3+ oxidises H2O to O2

4. Mn3+ oxidised H2O to O2

Subtopic:  d-Block Elements- Properties & Uses |
 56%
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Hints