NDA CHEMISTRY QUIZ

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 .

Both statement I and statement II are true and Statement II is the correct explanation of Statement I

Both statement I and statement II are true and Statement II is not the correct explanation of Statement I

Statement I is true , but statement II is false

Statement I is false , but II is true

Question 2:

Which of the following has the greatest ionic character ?

NaCl

BaCl₂

FeCl₃

KCl

Question 3:

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

LiCl > NaCl > KCl > RbCl

LiCl > KCl > NaCl > RbCl

NaCl > LiCl > KCl > RbCl

LiCl >NaCl > KCl > RbCl

Question 4:

Match the follwoing-

A-III,B-I,C-IV,D-II

A-II,B-IV,C-I,D-III

A-III,B-IV,C-II,D-I

A-III,B-IV,C-I,D-II

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

Linear

Trigonal planar

Tetrahedral

Trigonal Pyramidal

Question 6:

Which of the following contain coordinate bond ?

NH₄⁺
BH₄^-
CO₃^2-
H₃O⁺

1,2,3

1,2,4

1,2

2,3,4

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

Both statement I and statement II are true and Statement II is the correct explanation of Statement I

Both statement I and statement II are true and Statement II is not the correct explanation of Statement I

Statement I is true , but statement II is false

Statement I is false , but II is true

Question 8:

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

Sp³ to sp²

Sp² to sp³

Sp to sp²

Sp to sp³

Question 9:

Which of the following exits in liquid state ?

HF

HCl

HBr

HI

Question 10:

Which of the following statement is incorrect ?

Lone pair on Xe in XeO₃ specie is 1

Lone pair on Xe in XeF₄ specie is 1

Lone pair on Xe in XeF₆ specie is 1

Lone pair on Xe in XeF₂ specie is 3

NDA CHEMISTRY QUIZ - 22

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NDA CHEMISTRY QUIZ - 22

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