Classification of Elements and Periodicity in Properties · Question 28

Match List - I with List - II. Choose the correct answer from the options given below :

1. A-II, B-III, C-IV, D-I
2. A-IV, B-III, C-II, D-I
3. A-III, B-II, C-IV, D-I
4. A-III, B-II, C-I, D-IV

First and second ionization enthalpies of lithium are 520 kJ mol-1 and 7297 kJ mol-1 respectively. Energy required to convert 3.5 mg lithium (g) into Li2+(g) [ Li(g) Li2+(g)] is kJ. (nearest integer) [Molar mass of Li = 7 g mol-1]

In a period, the first ionisation enthalpy of the element at extreme left and the negative electron gain enthalpy of the extreme right element, except noble gases, are respectively.

1. lowest and lowest
2. highest and lowest
3. lowest and highest
4. highest and highest

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

1. Both Statement I and Statement II are true
2. Both Statement I and Statement II are false
3. Statement I is true but Statement II is false
4. Statement I is false but Statement II is true

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

1. Both Statement I and Statement II are true
2. Both Statement I and Statement II are false
3. Statement I is true but Statement II is false
4. Statement I is false but Statement II is true

A monoatomic anion (A-) has 45 neutrons and 36 electrons. Atomic mass, group in the periodic table and physical state at room temperature of the element (A) respectively are

1. 80, 17, liquid
2. 81, 16, solid
3. 80, 16, gas
4. 81, 15, gas

The 1st ionization enthalpy for Mg is +737 kJ/mol. The most probable estimated value of the 2nd ionization enthalpy of Mg is .

1. −906 kJ/mol
2. −856 kJ/mol
3. +1450 kJ/mol
4. +590 kJ/mol

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

1. Both Statement I and Statement II are true
2. Both Statement I and Statement II are false
3. Statement I is true but Statement II is false
4. Statement I is false but Statement II is true

The correct set that contains all kinds (basic, acidic, amphoteric and neutral) of oxides is :

1. Na2O, K2O, Al2O3 and As2O3
2. Al2O3, As2O3, CO and NO
3. K2O, Cl2O7, As2O3 and NO
4. Na2O, N2O, Al2O3 and CO

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

1. Both Statement I and Statement II are true
2. Both Statement I and Statement II are false
3. Statement I is true but Statement II is false
4. Statement I is false but Statement II is true