AIEEE Chemistry (2007)

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AIEEE Chemistry (2007)

Created by Quizmagic Team on Jan 09, 2013 06:44 PM

There are 20 questions of AIEEE Chemistry 2007 examination. Take this quiz to test your knowledge of Chemistry and prepare yourself for 'All India Engineering Entrance Examination'.

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	Anonymous	88 05:02
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Sample Questions

Question 1

The pKa of a weak acid (HA) is 4.5. The pOH of an aqueous buffered solution of HA in which 50% of the acid is ionized is

7
2.5
4.5
9.5

Question 2

Identify the incorrect statement among the following

4f and 5f orbitals are equally shielded
d-Block elements show irregular and erratic chemical properties among themselves
The chemistry of various lanthanoids is very similar
La and Lu have partially filled d orbitals and no other partially filled orbitals

Question 3

The secondary structure of a protein refers to

fixed configuration of the polypeptide backbone
sequence of α-amino acids
α-helical backbone
hydrophobic interactions

Question 4

The reaction of toluene with Cl₂in presence of FeCl₃gives predominantly

benzoyl chloride
m-chlorotoluene
benzyl chloride
o-and p-chlorotoluene

Question 5

Presence of a nitro group in a benzene ring

deactivates the ring towards electrophilic substitution
deactivates the ring towards nucleophilic substitution
renders the ring basic
activates the ring towards electrophilic substitution

Question 6

The actinoids exhibits more number of oxidation states in general than the lanthanoids. This is because

there is a similarity between 4f and 5f orbitals in their angular part of the wave function
the 5f orbitals are more buried than the 4f orbitals
the actinoids are more reactive than the lanthanoids
the 5f orbitals extend further from the nucleus than the 4f orbitals

Question 7

Equal masses of methane and oxygen are mixed in an empty container at 25°C. The fraction of the total pressure exerted by oxygen is

41308
(1/3) x (273/298)
41276
41277

Question 8

A radioactive element gets spilled over the floor of a room. Its half-life period is 30 days. If the initialactivity is ten times the permissible value, after how many days will it be safe to enter the room?

1000 days
300 days
10 days
100 days

Question 9

Which one of the following conformation of cyclohexane is chiral?

Boat
Rigid
Twist boat
Chair

Question 10

Which of the following sets of quantum numbers represents the highest energy of an atom?

n= 3, l = 0, m = 0, s= +1/2
n= 3, l = 2, m = 2, s= +1/2
n= 3, l = 2, m = 1, s= +1/2
n= 4, l = 0, m = 0, s= +1/2

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