Chemistry

Copyrights Note:Dont Copy this material and publish it anywhere on the web without the permissions of blog authorities.

Note: Only correct answers are given under every M.C.Q due to shortage of time(4m my tough schedule of med studeies). I complied this data by MCAT Students who appeared in 2012. You may get a well idea of MCAT exam by this material. Here are only a few samples of MCAT 2012 exam conducted by UHS. Soon We will upload Bio,Phy and MCQs. ( In case u find any mistake dont forget to write us at Contact Us Your suggestions and reviews will be appreciated. Thank U  to all our Med Community!)
1-Molecules of Cl2in one mol of Cl2 …………..1A=6.02×1022

2-Boiling Points of Following are in the Order of…2A=H20, NH3, HCL, HF

3-Angle b/w sp2 hybrid orbital and unhybridized p-orbital? 3A=90 degree

4-By increasing principle quantum no. (n)shapes of s-orbital remain same but size? 4 A=increses

5-HF bond is …………………………………………….5A=Polar covalent

6=∆H is signed negative when reaction is ? ……………………….6A=exothermic

7=Habers`s process N2+3H2——-2NH3 the optimum temperature is ? ……………………………7A=400-500degree centi) (670-770c®)

8-In Haber`s process N2is obtained from ? 8A=Air

9-Buffer solution resists in change their ? 9A= pH , pOH

10-SO3 is not dissolved directly in water ? why?

11-Boiling point constant is used to calculate ?………………………. 11A=Molar MASS

12-By increasing solute particles freezing point ?…………………………………..12A=Decreases

13-Lattice energy ofionic compounds is the energy of ?…………………..13A=Formation

14-In the electrolysis of Cucl2 which metal is deposited at cathode?…………………….14A=Cu

15-Oxidation state of Cl in MgCl2 ? ……………………?

16-Oxidation of S in H2S?………………………………,?

17-With the passage of time reaction rate decreses due to ?…17A=decrease in reactant conc.

18- Rection in which product act as catalyst is called?………………………..18A=autocatalysis

19-Order of oxidations state in compounds of Mn?….19A=Mno.Mn2O3,MnO2,KmnO4

20-By increasing ionization energy …………decreses? 20A=Metalic Character

21-Moving along a period which remains same?……….21A=No. of shells

22-Alkaline earth metal hydroxide decomposes on heating …Reaction is M(OH2)—-MO+H20

23-Free radical of Cl is ? 23A=Cl®

24-Irregular electronic configuration is shown by which of transition elements? 24A=Cr,Cu

25-Energy order of orbitals ? 25A=4s,3d,3p

26-Self Linkage of carbon atoms is called? Catenation

27-isomerism?

28-Intermediate compound in the bromination of alkane is ?

29-Introduction of R-C=O in benzene is called ?? acylation.
30-Secondary alkyl halides give? 30A= SN1 and SN2 Both
31-The Given alcohol is R-1C-OH(R-1C-H)? 2ndry
32-Alcohol is dehydrated to……at 140®? 32A=Diethyl ether
33-Which of the following does not give iodine test? CH3-CH2-C=O-CH2-CH3
34-Secondary alcohol is oxidized to ? 34A=Ketones
35-Ethyl alcohol is oxidized to ? 35A=ethanoic acid
36-H-C=O-H+HCN………?
37-In estrification O-H breaks of which compund? CH3COOH? C2H5OH?
38-Which nucleophiole attacks electrophile c-atom? CH3COOH+PCl5CH3COCL+POCl3+HCL
39-CH3COOH+NH3………+H20 CH3-C=O-NH2
40-Glycine and alanine combines to form?
41-In basic medium structure of amino acid is ? R-CH-NH2-COO-
42-Peptide linkage is ? -CO-NH
43-Amino acids which body cannot synthesize are called? Essential amino acids
44-Which of the following is not an alpha amino acid? NH2-CH2-CH2-CH2-COOH
45-Polymers are formed by smaller units called? Monomers
46-Polymerization of ethyne is ….? Addition ? Condensation?
47-Sucrose is ? Mono or Disaccharide?
48-Starch is a polymer of ? ∞-D-Glucose
49-Major stored carbohydrate in animals is ? Glycogen
50-Carbohydrates contains the following elements?
51-Which of the following is oil at rooom temperature? Olic Acid
52-Reaction of lipid with caustic soda is ? Sponification
53-Which of the following base pair is absent in DNA? U-A
54-Which elemnt causes to clog the gills of fishes? Al
55-Accumulation of H2O2,HNO3,PAN causes which smog?
56-Polluted acid rain has Ph? Below 5
57-Acid rain is caused by? NO2 and SO2 both