AIEEE Chemistry (2009)

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AIEEE Chemistry (2009)

Created by Quizmagic Team on Jan 09, 2013 06:46 PM

There are 20 questions of AIEEE Chemistry 2009 examination. Take this quiz to test your knowledge of Chemistry .

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	Anonymous	81 00:37
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Sample Questions

Question 1

The bond dissociation energy of B – F in BF₃ is 646 kJ mol^-¹whereas that of C-F in CF₄is 515kJ mol^-¹. The correct reason for higher B-F bond dissociation energy as compared to that of C- F is :

stronger σ bond between B and F in BF₃ as compared to that between C and F in CF₄
significant pπ-pπ interaction between B and F in BF₃ whereas there is no possibility of such interaction between C and F in CF₄
smaller size of B-atom as compared to that of C- atom
lower degree of pπ- pπ interaction between B and F in BF₃ than that between C and F in CF₄

Question 2

The two functional groups present in a typical carbohydrate are :

- OH and -CHO
-OH and -COOH
> C = O and - OH
-CHO and -COOH

Question 3

The set representing the correct order of ionic radius is :

Mg²⁺ > Be²⁺ > Li⁺ > Na⁺
Li⁺ > Na⁺ > Mg²⁺ > Be²⁺
Li⁺ > Be²⁺ > Na⁺ > Mg²⁺
Na⁺ > Li⁺ > Mg²⁺> Be²⁺

Question 4

The IUPAC name of neopentane is

2, 2-dimethylpropane
2-methylpropane
2,2-dimethylbutane
2-methylbutane

Question 5

The number of stereoisomers possible for a compound of the molecular formula CH₃−CH=CH−CH(OH)−Me is :

2
3
6
4

Question 6

A binary liquid solution is prepared by mixing n-heptane and ethanol. Which one of the following statements is correct regarding the behaviour of the solution ?

The solution is non-ideal, showing +ve deviation from Raoult’s law.
n-heptane shows +ve deviation while ethanol shows –ve deviation from Raoult’s law
The solution is non-ideal, showing –ve deviation from Raoult’s law.
The solution formed is an ideal solution

Question 7

Calculate the wavelength (in nanometer) associated with a proton moving at 1.0 x 10³ ms^-¹(Mass of proton = 1.67 x 10^-²⁷ kg and h = 6.63 x 10^-³⁴Js ):

14.0 nm
2.5 nm
0.032 nm
0.40 nm

Question 8

In context with the transition elements, which of the following statements is incorrect ?

In addition to the normal oxidation states, the zero oxidation state is also shown by these elements in complexes
Once the d⁵configuration is exceeded, the tendency to involve all the 3d electrons in bonding decreases
In the highest oxidation states, the transition metal show basic character and form cationic complexes.
In the highest oxidation states of the first five transition elements (Sc to Mn), all the 4s and 3d electrons are used for bonding

Question 9

Using MO theory predict which of the following species has the shortest bond length ?

O₂⁺
O₂^-
O₂²^-
O₂²⁺

Question 10

Solid Ba(NO₃)₂is gradually dissolved in a 1.0 x 10^-⁴ M Na₂CO₃ solution. At what concentration of Ba²⁺will a precipitate begin to form ?(K_s_pfor Ba CO₃= 5.1 × 10⁻⁹).

5.1 x 10^-⁵ M
4.1 x 10^-⁵ M
8.1 x 10^-⁷ M
8.1 x 10^-⁸ M

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