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Home » Medical Papers » Aptitude Test - 21
Hassan
1.In an amino acid in which the R-group is H, its name will be
A. Alanine
B. Glycine
C. Leucine
D. Alanine
2.Fatty acid are the organic compounds containing hydrogen, oxygen and one of the following are
A. –COOH
B. –NH2
C. Acyl
D. –COOH
3.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
4.Posomes are used in gene therapy against
A. Hypercholesterolemia
B. Coronary Artery Angioplasty
C. Cystic Fibrosis
D. Hypercholesterolemia
5.During SN2 reactions, configuration of the alkyl halide molecule:
A. Gets inverted
B. Remains same
C. Depends upon the carbon atom
D. Gets inverted
6.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
7.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
8.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
9.Which one of the following is depleting and causing thinning of ozone?
A. Chlorine
B. Bromine
C. Chlorofluorocarbon
D. Chlorine
10.Ethanol reacts with Ammonia to produce ethyl amine, the catalyst is
A. ZnCl2
B. ThO2
C. C6H5N
D. ZnCl2
11.The typical environment of a particular organism population community is called
A. Niche
B. Ecosystem
C. Habitat
D. Niche
12.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
13.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
14.In an ecosystem, mycorrhizae is an example of
A. Symbiosis
B. Predation
C. Commensalism
D. Symbiosis
15.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
16.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
17.The sex of individuals of next generation always depends on one of the parents who is
A. Heterogametic
B. Homogametic
C. Isogametic
D. Heterogametic
18.Hydrolysis of cyano group by an aqueous acid results into
A. Carboxylic Acid
B. Acid Amide
C. Cyanohydride
D. Carboxylic Acid
19.Brick red precipitates are formed when aldehydes react with
A. Sodium borohydride
B. Sodium bisulphite
C. Sodium nitroprusside
D. Sodium borohydride
20.The nature of the amino acid ‘lysine’ is
A. Neutral
B. Acidic
C. Amphoteric
D. Neutral
21.Which of the following compounds, in the form of aqueous solution, on reaction with sodium carbonate will produce carbon dioxide gas?
A. H3C-COO-C2H5
B. H3C2-COO-CH3
C. H3C2-CO-OH
D. H3C-COO-C2H5
22.Which of the following will be hemophilic?
A. XHXh
B. XHXH
C. XhY
D. XHXh
23.Collagen and albumin are
A. Simple proteins
B. Derived proteins
C. Polyamides
D. Simple proteins
24.Urea is produced by the reaction of liquid ammonia with
A. CO2
B. CO
C. CaO
D. CO2
25.The calcium sulpho-aluminate is
A. Co.Al2O3.3CaSO4.6H2O
B. 3Ca.Al2O3.CaSO4.2H2O
C. 3Ca.Al2O3.3CaSO4.2H2O
D. Co.Al2O3.3CaSO4.6H2O
26.Which of the following is an example of X-linked recessive trait in humans?
A. Hypophospatemic Rickets
B. Colour Blindness
C. Baldness
D. Hypophospatemic Rickets
27.The coagulant used in raw water to precipitate suspended impurities is
A. Caustic soda
B. Lime water
C. Alum
D. Caustic soda
28.The whiteness of the recycled newspaper is improved by treating it with
A. Sodium hydroxide
B. Per oxides
C. Super oxides
D. Sodium hydroxide
29.Which trait in human in an example of multiple alleles?
A. Eye Colour
B. Skin Colour
C. ABO-Blood Group
D. Eye Colour
30.One mole of any gas at standard temperature and pressure (STP) occupies a volume of
A. 20.414 dm3
B. 22.414 dm3
C. 22.414 cm3
D. 20.414 dm3
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