Sindh MDCAT 2022 Paper

101- 3.0 gram of C on combustion gives C + O2 = CO2:

A. 5.5g of CO2 
B. 22g of CO2 
C. 3.01 ×10^23 molecules of CO2  
D. 1.505 ×10^23 molecules of CO2

Answer : D. 1.505 ×10^23 molecules of CO2

102- Alkyl halide on reaction with NaOH, product is an alkane. Mechanics of reaction is:

A. SN
B. Elimination
C. Decomposition
D. Electrophilic substitution reaction  

Answer : A. SN

103- The first organic compound manufactured from inorganic compound was:

A. Ethyl acetate
B. Urea
C. Acetic acid
D. Methane

Answer : B. Urea

104- The ionization energy increases along a period in periodic table due to increase in:

A. No of positrons
B. No of neutrons
C. Nuclear charge
D. No of electrons

Answer : C. Nuclear charge

105- Reaction taking place in one step or in several steps have same ΔH it is statement of:

A. Hess’s law
B. Boyle’s law
C. Charles’s law
D. Avogadro’s law

Answer : A. Hess’s law

106- Oxidation of primary alcohol gives:

A. aldehydes
B. ketone
C. alkane
D. alkaloids

Answer : A. aldehydes

107- Primary alcohols when reacts with halogen acids the product is:

A. tertiary alcohols
B. primary alcohols
C. primary alkyl halide
D. secondary alkyl halide

Answer : C. primary alkyl halide

108- Acetophenone is an:

A. aliphatic ketone
B. carboxylic acids
C. aldehydes
D. aromatic ketones

Answer : D. aromatic ketones

109- SN1 mechanism is a:

A. single step mechanism
B. two step mechanism
C. attack of nucleophile on carbocation is slow step
D. primary alkyl halide follows Sn1 mechanism

Answer : B. two step mechanism

110- Hexanoic acid is IUPAC name of:

A. propanoic acid
B. formic acid
C. caproic acid
D. butyric acid

Answer : C. caproic acid

111- The options having all the properties of γ rays:

A. most penetrating, velocity is equals to that of light no deflection in magnetic field
B. least penetrating, velocity 1/10th of light deflected in magnetic field helium nucleus
C. proton least penetrating, deflects like negative particle in magnetic field
D. most penetrating power, velocity less than that of light deflects in magnetic field they are electrons

Answer : A. most penetrating, velocity is equals to that of light no deflection in magnetic field

112- The solubility product Ksp predicts whether :

A. diffusion
B. boiling point
C. melting point
D. precipitation will take place or no

Answer : D. precipitation will take place or no

113- In protein amino acid molecules are linked by:

A. glycosidic linkage
B. peptide linkage
C. ethane linkage
D. ester linkage

Answer : B. peptide linkage

114- Ratio of atomic mass of hydrogen to atomic mass of carbon is:

A. one twelfth
B. half
C. double
D. equal

Answer : A. one twelfth

115- Reforming :

A. increases octane number
B. more is knocking better is the fuel
C. to produce a fuel of less octane number
D. decreases the octane number

Answer : A. increases octane number

116- Addition product of formaldehyde and ethyl alcohols is :

A. acetone
B. carboxylic acid
C. aldehyde
D. ketone

Answer : C. aldehyde

117- Down’s cell is for the :

A. metallurgy of Na
B. metallurgy of Mg
C. metallurgy of Al
D. metallurgy of Fe

Answer : A. metallurgy of Na

118- Falling drop of liquid is spherical due to;

A. viscosity
B. surface tension
C. atomic atomic structure
D. vapors pressure

Answer : B. surface tension

119- Catalytic hydrogenation of oil gives;

A. alkene
B. alkyl halides
C. soap
D. fat

Answer : D. fat

120- Benzyl alcohol C6H5CH2OH is a;

A. aromatic alcohol
B. aromatic ketone
C. aliphatic alcohol
D. alicyclic alcohols

Answer : A. aromatic alcohol

1

2

3

4

5

6

7

8

9

10

Leave a Reply

Your email address will not be published. Required fields are marked *

Scroll to Top