Chemistry Sample Test Paper 5 - AIEEE 2009

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(SOLVED)
Note : All Answers are in red.

1. The forces of attraction in liquid helium are-
Ionic
Metallic
Vander Waals
Covalent

2. If an atom has empty d orbitals available, then it may be able to used them to accommodate more than eight electrons and hence to expand its octet to 10,2 or even more electrons. That capability may :
not allow the central atom to form additional multiple bonds to the atom attached to it
allow the central atom to form additional multiple bonds to the atoms attached to it
not allow to form additional single bonds to more atoms
allow to form additional two bonds to more atoms

3. All bond :
dissociations are exothermic
dissociations are endothermic
enthalpies are negative
enthaplies are negative

4. Which of the following factors do not favour electrovalency ?
low charge on ions
high charge on ions
large cation and small anion
large cation and small anion

5. Which of the following elements have unpaired electrons in ground state electronic configuration ?
Ca
Co
Zn
Na

6. Which of the following is/are electron deficient compounds ?
NaBH₄
B₆H₂
AlCl₃
LiAlH₄

7. To which of the following species is the octet rule not applicable ? Which of the following is not true
BrF₅
SF₆
IF₇
CO

8. Which of the following do not exist ? Which of the following is not true
SH₆
HFO₄
FeI₃
HClO₃

9. Which of the following statements are correct for lattice energy ?
It is indirectly proportional to charge
It is inversely proportional to charge
It is inversely proportional to size
It is directly proportional to size

10. Most ionic compounds have, which of the following is not true.
high melting points and high boiling points
high melting points and nondirectional bonds
high solubilities in polar solvents and low solubilities in nonpolar solvents
three-dimensional network structures, and are not good conductors of electricity in the molten state