Subject Experts Solutions for Chapter: Periodic Classification of Elements, Exercise 1: Practice Exercise

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Subject Experts Chemistry Solutions for Exercise - Subject Experts Solutions for Chapter: Periodic Classification of Elements, Exercise 1: Practice Exercise

Attempt the free practice questions on Chapter 6: Periodic Classification of Elements, Exercise 1: Practice Exercise with hints and solutions to strengthen your understanding. Pathfinder NDA / NA National Defence Academy and Naval Academy Entrance Examination Chemistry solutions are prepared by Experienced Embibe Experts.

Questions from Subject Experts Solutions for Chapter: Periodic Classification of Elements, Exercise 1: Practice Exercise with Hints & Solutions

MEDIUM
NDA & NA EE
IMPORTANT

Match List I with List II and select the correct combination of ions and isoelectronic ions using the codes given below the lists.

List I List II
A. SO2 1. CO
B. N2 2. Cl-
C. H- 3. CO32-
D. K+ 4. Li+

 

HARD
NDA & NA EE
IMPORTANT

Match the properties given in Column I with the metals given in Column II and choose the correct option from the codes given below.

Column I(Property) Column II(Metal)
A. Element with the highest second ionisation enthalpy 1. Co
B. Element with the highest third ionisation enthalpy 2. Cr
C. M in MCO6 is 3. Cu
D. Element with the highest heat of atomisation 4. Zn

 

EASY
NDA & NA EE
IMPORTANT

Which one of the following elements exists in the liquid state at room temperature?

MEDIUM
NDA & NA EE
IMPORTANT

Which among the following is correct regarding Ne20,Na+23, 19F- and Mg2+24?

MEDIUM
NDA & NA EE
IMPORTANT

Match List I with List II and select the correct answer using the codes given below the lists.

List I (Element) List II (Use)
A. Li 1. Timekeeper in atomic clocks
B. Na 2. Batteries
C. K 3. Transfer of nerve impulses
D. Cs 4. Control of the water content in the blood

HARD
NDA & NA EE
IMPORTANT

The alkali metals have relatively low melting point. Which one of the following alkali metals is expected to have the highest melting point?