Which of the following compounds are readily soluble in water?

a.  BeSO4

b.  MgSO4

c.  BaSO4

d.  SrSO4

Choose the correct option
1. (a, b)
2. (b, c)
3. (c, d)
4. (a, d)

Subtopic:  Preparations, Properties & Uses of S Block Elements |
 77%
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

Choose the correct statements from the following.

a Beryllium is not readily attacked by acids because of the presence of an oxide film on the surface of the metal
b. Beryllium sulphate is readily soluble in water as the greater hydration enthalpy of Be2+ overcomes the lattice enthalpy factor
c Beryllium exhibits coordination number more than four
d Beryllium oxide is purely acidic in nature

Choose the correct option

1. (a, b)
2. (b, c)
3. (c, d)
4. (a, d)

Subtopic:  Preparations, Properties & Uses of S Block Elements |
 85%
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 alkali metals have low melting point. Which of the following alkali metal is expected to melt if the room temperature rises to 30°C?

1. Na

2. K

3. Rb

4. Cs

Subtopic:  Preparations, Properties & Uses of S Block Elements |
 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

The reducing power of a metal depends on various factors. Suggest the factor which makes Li, the strongest reducing agent in aqueous solution.

1. Sublimation enthalpy

2. Ionisation enthalpy

3. Hydration enthalpy

4.  Electron-gain enthalpy

Subtopic:  Preparations, Properties & Uses of S Block Elements |
 80%
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 order of decreasing ionisation enthalpy in alkali metals is

1. Na>Li>K>Rb

2. Rb<Na<K<Li

3. Li>Na>K>Rb

4. K<Li<Na<Rb

Subtopic:  Preparations, Properties & Uses of S Block Elements |
 85%
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

In the synthesis of sodium carbonate, the recovery of ammonia is done by treating NH4Cl with Ca(OH)2. The by-product obtained in this process is

1. CaCl2

2. NaCl

3. NaOH

4. NaHCO3

Subtopic:  Preparations, Properties & Uses of S Block Elements |
 80%
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

Metallic elements are described by their standard electrode potential, fusion enthalpy, atomic size, etc. The alkali metals are characterized by which of the following properties?

a. High boiling point

b. High negative standard electrode potential

c. High-density

d. Large atomic size

1. (a, b)
2. (b, c)
3. (c, d)
4. (b, d)

Subtopic:  Physical Properties | Preparations, Properties & Uses of S Block Elements |
 64%
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 are the correct reasons for the anomalous behavior of lithium?

a.  Exceptionally small size of its atom

b.  Its high polarising power

c.  It has high degree of hydration

d.  Exceptionally low ionisation enthalpy

Choose the correct option
1. (a, b)
2. (b, c)
3. (c, d)
4. (a, d)

Subtopic:  Preparations, Properties & Uses of S Block Elements |
 67%
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