NDA CHEMISTRY QUIZ - 22

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Question 1:

Directions – Question consist of two statements labelled as statement I and statement II . Examine both the statement and mark the correct choice according to the codes given below 

Statement I – Lattice enthalpy of MgO is higher than NaCl 

Statement II – Greater the charge on ions , higher is the lattice enthalpy . 

Question 2:

Which of the following has the greatest ionic character ?

Question 3:

Which of the following is the correct order of lattice enthalpy ?

Question 4:

Match the follwoing-

Question 5:

The molecule XY3 has 3 sigma bond and 1 lone pair of electrons in valence shell of X . The shape of the molecule is 

Question 6:

Which of the following contain coordinate bond ?

  1. NH4+
  2. BH4-
  3. CO32-
  4. H3O+

Question 7:

Directions – Question consist of two statements labelled as statement I and statement II . Examine both the statement and mark the correct choice according to the codes given below 

Statement I – Both BF3 and NF3 are covalent compounds 

Statement II - Both are non-polar molecules

Question 8:

Hybridization of the underline atom changes in AlH3 changes to AlH4- from 

Question 9:

Which of the following exits in liquid state ?

Question 10:

Which of the following statement is incorrect ?