MCAT 2010 Chemistry
One mole of any gas at standard temperature and pressure (STP) occupies a volume is,
a)
b)
c)
d)
22.414 dm 3
22.414 cm 3
23.414 dm 3
20.414 dm 3
The relative abundance of the isotopes of the elements can be determined by,
a)
b)
c)
d)
X rays
Spectrometry
Chromatography
Solvent extraction
If we are given mass of one substance, we can calculate of volume of other substances and vice versa,
with the help of balanced chemical equation. This is called is
a)
b)
c)
d)
Mass mass relationship
Mass mole relationship
Mass volume relationship
Mole volume relationship
Sublimation is used to purify,
a)
b)
c)
d)
Ammonium sulphate
Sodium chloride
Lead carbonate
Benzoic acid
The purity of a substance can be identified by
a)
b)
c)
d)
Sublimation
Filtration
Solvent extraction
chromatography
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which one of following mathematical expression represents the Avogadro’s law?
a) V= k nT/P (when T and n are constant)
b) V= k nT/P (when P and n are constant)
c) T= R Nt/P (when P and T are constant)
d) T= R P/nT (when P,T and n are constant)
The root mean square velocity is inversely proportional to the square root of their:
a)
b)
c)
d)
Temperature
Pressure
Volume
Molar mass
Plasma is the ionized gas mixture which consists of,
a)
b)
c)
d)
Ions and electron
Ions and neutral atoms
electrons and neutral atoms
electrons, ions and neutral atoms
which type of force is used in gasoline,
a)
b)
c)
d)
dipole dipole forces
hydrogen bonding
dipole induced dipole forces
London dispersion forces
In the structure of NaCl each Na+ is surrounded by …………. Cl- ions,
a)
b)
c)
d)
Four
Eight
Five
Six
The charge of one gram of electron is,
a)
b)
c)
d)
1.7588 x 10 -11
1.7588 x 10 11
1.7588 x 108
1.602 x 10 -19
The ionization energy of hydrogen atom is,
a) Zero
b) 13.13 KJ MOLE -1
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c) 1313.31 K2J mol
d) 1313.31 KJ MOLE -1
Which quantum no. helps us to study the orientation of an orbital in space?
a)
b)
c)
d)
Principal quantum number
Spin quantum number
Azimuthal quantum number
Magnetic quantum number
The inter-ionic distance in a crystal lattice of KCl is,
a)
b)
c)
d)
181 pm
314 pm
95 pm
300 pm
The number of bonds in nitrogen molecule is,
Which one of the following has zero dipole moment?
a)
b)
c)
d)
NH3
H2O
CHCl3
BF3
A spontaneous process is
a)
b)
c)
d)
Unidirectional and irreversible
Unidirectional and a real process
Irreversible and a real process
All of above
The standard enthalpy of solution of NH4Cl is …… kJ mole -1
a)
b)
c)
d)
-25.0
+ 16. 2
+ 4.98
+26.0
The Kc has following units for the reaction is
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H2 (G) + I2 (g)  2HI (g)
a)
b)
c)
d)
No unit
Mol 2 dm -6
Mol dm -3
Mol -2 dm 6
0.1 mole of acetic acid has been dissolved per dm -3 of the soln. , the percentage of ionization of acetic
acid will be,
a) 15
b) 13
c) 0.1
d) 1.3
Solubility of Ce 2 (SO4) 3
a)
b)
c)
d)
Increase with temp.
Decrease with temp.
Shows exceptional behavior
Remains constant
Seawater has 5.65 x 10 -3 g of dissolved oxygen in one kilogram of water. Concentration of O2 in parts
per million is:
a)
b)
c)
d)
7.69
5.65
5.20
4.11
Metallic conduction involves the relative free movement of their ….. throughout the metallic lattice
a)
b)
c)
d)
Atoms
Molecules
Ions
Electrons
In an electrochemical series, standard electrode potentials are on the basis of,
a)
b)
c)
d)
pH scale
pOH scale
pKa scale
Hydrogen scale
The reaction which is responsible for the production of electricity in an voltaic cell is
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a)
b)
c)
d)
Hydrolysis reaction
Oxidation reaction
Redox reaction
Reduction reaction
Glucose is converted into ethanol by the enzyme …. Present in the yeast ,
a)
b)
c)
d)
Urease
zymase
invertase
sucrase
The rate of reaction involving ions can be studied by ….. Method:
a)
b)
c)
d)
dilatometric
electrical conductivity
refractrometric
optical rotation
When one mole of gaseous hydrogen ions are dissolved in water to form an infinitely dilute soln.,
the amount of heat liberated is:
a) - 1075 kJ mol-1
b) -499 kJ mole-1
c) -1891 kJ mole-1
d) -1562kJ mole-1
Energy required to remove an electron from the outermost shell of its isolated gaseous atom in its
ground state is:
a)
b)
c)
d)
Electron affinity
Crystal energy
Lattice energy
Ionization energy
Which of the following carbonates of alkali metals is not stable towards heat and is decomposed on
heating its oxide along with the liberation of CO2?
a)
b)
c)
d)
Rb2 CO 3
Na 2 CO 3
K 2 CO 3
Li 2 CO 3
The presence of calcium is essential for the normal development of plants. An adequate supply
of calcium appears to stimulate the development of which part of the plants?
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a)
b)
c)
d)
Leaves
Fruits
Branches
Root hairs
Which of the following sulphates is not soluble in water?
a)
b)
c)
d)
Sodium sulpahte
Zinc sulphate
Potassium suphate
Barium sulphate
The trend in the densities of elements of group III-A of the periodic table is:
a)
b)
c)
d)
A gradual decrease
A gradual increase
First decrease then increase
First increase then decrease
Which lead has one of the following properties?
a)
b)
c)
d)
Acidic
Neutral
Crystalline
Amorphous
The strongest acid among the following is:
a)
b)
c)
d)
HF
HCl
HBr
HI
The noble gas which is used in radiotherepy for cancer is:
a)
b)
c)
d)
Xenon
Argon
Radon
krypton
paramagnetic behavior of an atom, ion or molecule is due to presence of:
a)
b)
c)
d)
paired electrons
protons
unpaired electrons
neutrons
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the geometry of the complexes depends upon the type of …. Taking place in the valence shell of the
central metal atom.
a)
b)
c)
d)
Protonation
Deprotonation
Dissociation
Hybridiztion
Acidifed KMnO4 acts as a:
a)
b)
c)
d)
Reducing agent
Oxidizing agent
Excellent prepipating reagent
Germicide
A gasoline of higher ocatne no. can be obtained by:
a)
b)
c)
d)
Oxidative cleavage
Stream cracking
Thermal cracking
Catalytic cracking
Ethyne molecule is formed when two carbon atoms joined together to form a sigma bond by:
a)
b)
c)
d)
Sp-s overlap
Sp-sp overlap
Sp2-sp2 overlap
2px- 2py overlap
Symmetrical alkanes can be produced by:
a)
b)
c)
d)
Sabati senderen’s reaction
Kolbe’s electrolytic reaction
Hydrogenoloysis reaction
Reduction reaction
The catalyst used for the preparation of acrylonitrile is:
a)
b)
c)
d)
Al2 O3 and NH4Cl
Cu2Cl and NH4OH
Cu2Cl2 and NH4Cl
Cu2Cl2 and Al2O3
When a hydrogen atom is removed from benzene, the group left behind is called:
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a)
b)
c)
d)
Alkyl group
Phenyl group
Benzyl group
Methyl group
The introduction of NO2 group in benzene ring is called “nitration”. The nitration of benzene takes place
when it is heated with a 1:1 mixture of …….. At 50oC -55oC
a)
b)
c)
d)
Conc HNO3 and conc HCl
Conc HNO3 and conc acetic acid
Conc HNO3 and conc H2SO4
Conc HNO3 and conc H2PO4
During SN2 reactions, configuration of the alkyl halide molecule is:
a)
b)
c)
d)
Remains same
Gets inverted
Depends upon the carbon atom
Depend upon the elctronegativity of halide
Grignards reagents are prepared by the reaction of magnesium metal with alkyl halides in the presence
of:
a)
b)
c)
d)
Sodium lead alloy
Alcohol
Dry ether
Water
Methanol is prepared from carbon monoxide and hydrogen. The catalyst used for this reaction is:
a)
b)
c)
d)
ZnO + CuO2
ZnO +CuO
Cr2O3 + ZnO
ZnO + Ag2O
Ethanol reacts with ammonium to produce ethyl amine, the catalyst is:
a)
b)
c)
d)
ZnCl2
ThO2
C5H5N
Cr2O3
Dissociation constant of phenol is:
a) 1.2 x 10 -10
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b) 1.2 x 10 10
c) 1.3 x 10 -10
d) 1.3 x 10 10
Dry crystillation of a mixture of calcium salts of formic acid and acetic acid results into the formation of:
a)
b)
c)
d)
Acetaldehyde
Calcium acetate
Formaldehyde
Sodium acetate
Hydrolysis of cyano group by an aqueous acid results into:
a)
b)
c)
d)
Acid amide
Cyanohydride
Carboxylic acid
Formaldehyde
Brick red precipitates are formed when aldehydes react with:
a)
b)
c)
d)
Sodium borohyride
Fehling’s solution
Sodium bisulphate
Sodium nitroprusside
The nature of amino acid “lysine” is
a) Neutral
b) Basic
c) Acidic
d) Amphoteric
Which of the following compounds in the form of aqueous solution, an reaction with sodium carbon will
produce carbon dioxide gas?
a)H3C-COO-C2H5
b) H3C2-COO-C2H5
c) H5C2-COO-CH2
d) H3C2-CO-OH
collagen and albumin are:
a). derived proteins
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b) polyamides
c) polysaccharides
English
Eccentric
a)
b)
c)
d)
Lunatic
Odd
Stern
Upset
Boulder
a)
b)
c)
d)
Builder
Magnanimity
Rounded stone/ hill
Magnitude
Slumber
a)
b)
c)
d)
Heap
Humble
Sleep
knee
Excrement
a) waste matter expended from body
b) increment
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c) excitement
d) disagreement
Visage
a)
b)
c)
d)
vision
allusion
a person’s face
trunk less
Felicity
a)
b)
c)
d)
respite
intense happiness
inspire
sensation
Enmeshed
a)
b)
c)
d)
entangled
sojourn
gallows
cascade
captivate
a)
b)
c)
d)
hesitate
concentrate
fascinate
hate
Wallow
a)
b)
c)
d)
mock
roll about
borrow
protest
Connoisseur
a) guide
b) artist
c) teacher
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d) expert critic of art
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