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## Test Yourself

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# 1.Among the following the strongest acid isCH3COOH C6H5COOH m-CH3OC6H4COOH p-CH3OC6H4COOH

C.

m-CH3OC6H4COOH

Among the following the strongest acid is

2.

The paramagnetic species is

• KO2

• SiO2

• TiO2

• BaO2

A.

KO2

The paramagnetic species is

3.

Among the following the weakest base is

• C6H5CH2NH2

• C6H5CH2NHCH3

• O2NCH2NH2

• CH3NHCHO

D.

CH3NHCHO

Among the following the weakest base is

4.

Intermolecular hydrogen bonding is strongest in

• methylamine

• phenol

• formaldehyde

• methanol

D.

methanol

Intermolecular hydrogen bonding is strongest in

5.

MnO${}_{4}^{2-}$ (1 mole) in neutral aqueous medium is disproportionated to

• 2/3 mole of MnO${}_{4}^{-}$ and 1/3 mole of MnO2

• 1/3 mole of MnO${}_{4}^{-}$ and 2/3 mole of MnO2

• 1/3 mole of Mn2O7 and 1/3 mole of MnO2

• 2/3 mole of Mn2O7 and 1/3 mole of MnO2

A.

2/3 mole of MnO${}_{4}^{-}$ and 1/3 mole of MnO2

MnO${}_{4}^{2-}$ (1 mole) in neutral aqueous medium is disproportionated to

6.

Which of the following compounds possesses the C-H bond with the lowest bond dissociation energy?

• Toluene

• Benzene

• n-Pentane

• 2,2-Dimethylpropane

A.

Toluene

Which of the following compounds possesses the C-H bond with the lowest bond dissociation energy?

7.

Which of the following are arranged in the decreasing order of dipole moment?

• CH3Cl, CH3Br, CH3F

• CH3Br, CH3Cl, CH3F

• CH3Cl, CH3Br, CH3F

• CH3Br, CH3F, CH3Cl

B.

CH3Br, CH3Cl, CH3F

Which of the following are arranged in the decreasing order of dipole moment?

8.

The ion which is not tetrahedral in shape is

• BF4-

• NH4+

• Cu(NH3)42+

• NiCl42-

C.

Cu(NH3)42+

The ion which is not tetrahedral in shape is

9.

One gram sample of NH4NO3 is decomposed in a bomb calorimeter. The temperature of the calorimeter increases by 6.12 K. The heat capacity of the system is 1.23 kJ/g/deg. What is the molar heat of decomposition for NH4NO3 ?

• -7.53 kJ/mol

• -398.1 kJ/mol

• -16.1 kJ/mol

• -602 kJ/mol

D.

-602 kJ/mol

One gram sample of NH4NO3 is decomposed in a bomb calorimeter. The temperature of the calorimeter increases by 6.12 K. The heat capacity of the system is 1.23 kJ/g/deg. What is the molar heat of decomposition for NH4NO3 ?

10.

Which one of the following has $∆$S° greater than zero?

• CaO(s) + CO2(g) $⇌$ CaCO3(s)

• NaCl(aq) $⇌$NaCl(s)

• NaNO3(s) $⇌$ Na+(aq) + NO3-(aq)

• N2(g) + 3H2(g) $⇌$ 2NH3(g)

C.

NaNO3(s) $⇌$ Na+(aq) + NO3-(aq)

Which one of the following has $∆$S° greater than zero?