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Home » Medical Papers » UHS MDCAT » Aptitude Test - 20
1.Ethyne molecule is formed when two carbon atoms joined together to form a sigma bond by
A. sp-s overlap
B. sp3-sp3 overlap
C. 2py-2py overlap
D. sp-s overlap
2.Mental retardation, short stature, broad face and squint eyes are the symptoms of
A. Down’s syndrome
B. Klinefelter’s syndrome
C. Turner’s syndrome
D. Down’s syndrome
3.Chiasmata formation takes place during the process which is known as
A. Crossing Over
B. Attachment
C. Pairing
D. Crossing Over
4.Symmetrical alkanes can be produced by
A. Sabatier Sender’s Reaction
B. Hydrogenolysis Reaction
C. Reduction Reaction
D. Sabatier Sender’s Reaction
5.Healing of a wound and repair is the phenomenon which takes place by the process of
A. Mitosis
B. Meiosis
C. Cell Growth
D. Mitosis
6.The catalyst used for the preparation of acrylonitrile is
A. Cu2Cl2 and NH4Cl
B. Al2O3 and NH4Cl
C. Cu2Cl2 and NH4OH
D. Cu2Cl2 and NH4Cl
7.Which one of the following is the main cause of cancer?
A. Mutation
B. Controlled Cell Division
C. Regulated Mitosis
D. Mutation
8.The covalent bond formed between two monosaccharides is called
A. Glycosidic Bond
B. Hydrogen Bond
C. Peptide Bond
D. Glycosidic Bond
9.When a hydrogen atom is removed from benzene, the group left behind is called
A. Alkyl group
B. Phenyl group
C. Benzyl group
D. Alkyl group
10.The bond formed between glucose and fructose form sucrose is
A. 1,4 Glycosidic Linkage
B. 1,2 Glycosidic Linkage
C. 1,6 Glycosidic Linkage
D. 1,4 Glycosidic Linkage
11.In an amino acid in which the R-group is H, its name will be
A. Alanine
B. Glycine
C. Leucine
D. Alanine
12.Fatty acid are the organic compounds containing hydrogen, oxygen and one of the following are
A. –COOH
B. –NH2
C. Acyl
D. –COOH
13.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 50 oC-55 oC.
A. Conc. HNO3 and conc. HCl
B. Conc. HNO3 and conc. Acetic acid
C. Conc. HNO3 and H3PO4
D. Conc. HNO3 and conc. HCl
14.Posomes are used in gene therapy against
A. Hypercholesterolemia
B. Coronary Artery Angioplasty
C. Cystic Fibrosis
D. Hypercholesterolemia
15.During SN2 reactions, configuration of the alkyl halide molecule:
A. Gets inverted
B. Remains same
C. Depends upon the carbon atom
D. Gets inverted
16.Grignard reagents are prepared by the reaction of magnesium metal with alkyl halides in the presence of
A. Dry Ether
B. Sodium Lead Alloy
C. Alcohol
D. Dry Ether
17.Genetically engineered cells are introduced into bone marrow cells in the treatment of
A. Hypercholesterolemia
B. Severe Combined Immunodeficiency Syndrome
C. Cystic Fibrosis
D. Hypercholesterolemia
18.Methanol is prepared from carbon monoxide and hydrogen. The catalyst used for this reaction is
A. ZnO + CoO2
B. ZnO + CuO
C. ZnO + Ag2O
D. ZnO + CoO2
19.Which one of the following is depleting and causing thinning of ozone?
A. Chlorine
B. Bromine
C. Chlorofluorocarbon
D. Chlorine
20.Ethanol reacts with Ammonia to produce ethyl amine, the catalyst is
A. ZnCl2
B. ThO2
C. C6H5N
D. ZnCl2
21.The typical environment of a particular organism population community is called
A. Niche
B. Ecosystem
C. Habitat
D. Niche
22.Excessive enrichment of water with nutrients by human activity by which large amount of living organic matter grows is called
A. Archeotrophication
B. Eutrophication
C. Enrichment
D. Archeotrophication
23.Dissociation constant of phenol is
A. 1.2 x 10-10
B. 1.2 x 1010
C. 1.3 x 1010
D. 1.2 x 10-10
24.In an ecosystem, mycorrhizae is an example of
A. Symbiosis
B. Predation
C. Commensalism
D. Symbiosis
25.Dry distillation of a mixture of calcium salts of formic acid and acetic acid results into the formation of
A. Formaldehyde
B. Acetaldehyde
C. Calcium acetate
D. Formaldehyde
26.Successive stages of eating and being eaten by which recycling of materials and flow of energy takes place is called
A. Food Chain
B. Food Web
C. Trophic Level
D. Food Chain
27.The sex of individuals of next generation always depends on one of the parents who is
A. Heterogametic
B. Homogametic
C. Isogametic
D. Heterogametic
28.Hydrolysis of cyano group by an aqueous acid results into
A. Carboxylic Acid
B. Acid Amide
C. Cyanohydride
D. Carboxylic Acid
29.Brick red precipitates are formed when aldehydes react with
A. Sodium borohydride
B. Sodium bisulphite
C. Sodium nitroprusside
D. Sodium borohydride
30.The nature of the amino acid ‘lysine’ is
A. Neutral
B. Acidic
C. Amphoteric
D. Neutral
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