Pharm.D_POC_Stucture & Properties_MCQ

Pharm.D_POC_Stucture & Properties_MCQ

1.The most electronegative element is                                                                           
a) Chlorine
b) Bromine
c) Fluorine
d) Iodine

2.The formula that shows how atoms are arranged in a molecule is called the
A) molecular formula 
B) structural formula
C) empirical formula 
D) actual formula

3.Which carbon-halogen bond has the greatest polarity?
A) C-Br   
B) C-Cl
C) C-F   
D) C-I

4.Which of the following compounds forms the strongest Hydrogen bonds?
A) HF   
B) HCCl3 
C) CH3   
D) H2S

5. Mass number is denoted by the symbol
A) Z   
B) A 
C) N   
D) M

6.The atomic weight of Carbon is
A) 12.000 amu   
B) 12.012 amu
C) 12.011 amu   
D) 13.012 amu

7.According to Pauli exclusion principle, spins of two electrons in the same orbital are
A) Parallel to one another     
B) perpendicular to one another
C) Opposite to one another   
D) supporting one another

8.The maximum number of electrons that can be accommodated by p-orbital is                                    a) 6
b) 10
c) 14
d) 16

9.Carbon-12 atom has                                                                                                             
a) 6 electrons, 6 protons, 6 neutrons
b) 6 electrons, 12 protons, 6 neutrons
c) 12 electrons, 6 protons, 6 neutrons
d) 18 electrons, 6 protons, 6 neutrons

10.Which of the following processes could be the termination step in a chain reaction?
A) C2H6 gives 2 CH3.                                                                                                                 
B) C2H6 + H. give H2 + C2H5.
C) C2H6 + CH3. Gives CH4 + C2H5.                                                                                   
D) CH3. + CH3. Gives C2H6

11.Which of the following is polar molecule
a) CO2 
b) H2O 
c) H2
d) CCl4

12. Which is the best definition of electronegativity
a) It is the ability to draw electrons 
b) It is the ability to draw neutrons
c) It is the power to draw protons
d) It is the ability to draw both protons and electrons

13. Which among the following is protic solvent
a) Diethyl ether
b) Ethyl alcohol
c) Formaldehyde
d) Ethyl acetate

14.Which among the following is aprotic solvent 

a) water 

b) ethyl alcohol

c) chloroform 

d) Octanol

15.Whih of the following is not a aprotic solvent 

a) CCl4                                                                                                                        

b) Acetone                                                                                                                                      

c) Methanol                                                                                                                                      

d) Methnal   

16. Which of the following has more melting poing 

a) Benzene

b) Nitro benzene

c) p- Nitro phenol

d)o- Nitro phenol   

17.Which of the following has more melting poing 

a) Salicylic acid

b) p-hydroxy benzoic acid

c) m-hydroxy benzoic acid 

d) Benzoic acid      

18. Fats exist as solids due to 

a) Ionic interactions

b) Dipole Dipole interactions 

c) Van der waals forces

d) Bonded interactions 

19.Which electronegative atom does not participates in hydrogen bonding 

a) Oxygen

b) Nitrogen

c) Fluorine 

d) Chlorine

20.Among the following which is the weakest force                                                               a) Ionic force

b) Dipole-Dipole force

c) Hydrogen bond 

d) Van der Waals force