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Home » Medical Papers » UHS MDCAT » Aptitude Test - 29
1.Ice is less dense than water at:
A. 0 o C
B. 4 oC
C. -4 o C
D. 0 o C
2.At a given temperature and pressure, the one which shows marked deviation from ideal behavior is
A. N2
B. N3
C. CO2
D. N2
3.If the e/m value of electron is 1.7588 x 1011 coulombs Kg-1, then what would be the mass of electron in grams (charge on electron is 1.6022 x 10-19 coulombs)?
A. 9.1095 x 10-31 g
B. 91.095 x 10-31 g
C. 9.1095 x 10-28 g
D. 9.1095 x 10-31 g
4.When the two partially filled atomic orbitals overlap in such a way that the probability of finding electron is maximum around the line joining the two nuclei, the result is the formation of
A. Sigma Bond
B. Pi-Bond
C. Hydrogen Bond
D. Sigma Bond
5.The value of equilibrium constant (Kc) for the reaction 2HF(s) ⇌ H2(g) + F2(g) is 10-13 at 2000 °C. Calculate the value of Kp for this reaction:
A. 2 x 10-13
B. 10-13
C. 186 x 10-13
D. 2 x 10-13
6.In SO4-2 the oxidation number of Sulphur is
A. -8
B. +8
C. -6
D. -8
7.Coinage metals Cu, Ag, and Au are the least reactive because they have
A. Negative reduction potentia
B. Positive reduction potential
C. Negative oxidation potential
D. Negative reduction potentia
8.What will be the pH of a solution of NaOH with a concentration of 10-3 M?
A. 3
B. 14
C. 11
D. 3
9.f the reactant or product of a chemical reaction can absorb ultraviolet, visible or infrared radiation, then the rate of a chemical reaction can best be measured by which one of the following methods?
A. Chemical method
B. Spectrometry
C. Graphical method
D. Chemical method
10.For the reaction 2NO + O2 ⇌ 2NO2, the rate equation for the forward reaction is
A. Rate = k [NO] [O2]
B. Rate = k [NO]2[O2
C. Rate = k [NO2]2
D. Rate = k [NO] [O2]
11.Radon is _______ emitter and being radioactive is used in ________ treatment in radiotherapy:
A. β, cancer
B. α, cancer
C. α, kidney stone
D. β, cancer
12.Arrange the following elements according to the trend of ionization energies. (C, N, Ne, B)
A. Ne < N < C < B
B. B < N < C < Na
C. B < C < N < Na
D. Ne < N < C < B
13.Which one of the following noble gases is used for providing an inert atmosphere for welding?
A. Helium
B. Neon
C. Argon
D. Helium
14. The percentage of carbon in different types of iron products is in the order of
A. Cast Iron > Wrought Iron > Steel
B. Wrought Iron > Steel > Cast Iron
C. Cast Iron > Steel > Wrought Iron
D. Cast Iron > Wrought Iron > Steel
15.Which one of the following is correct equation of 1st ionization of sulphuric acid?
A. H2SO4(aq) + H2O(l) 2H+ + SO4 2
B. H2SO4(aq) + H2O(l) H+(aq) + HSO4
C. H2SO4(aq) + H2O(l) 2H+ + SO4 2
D. H2SO4(aq) + H2O(l) 2H+ + SO4 2
16.Which one of the following is the correct chemical reaction for Ammonia formation by Haber process?
A. N2(g) + 3H2(g) 2NH3(g)
B. 2N(g) + 3H2(g) ⇌ NH3(g)
C. 2N(g) + 3H2(g) 2NH3(g
D. N2(g) + 3H2(g) 2NH3(g)
17.The pH of acid rain is
A. 7
B. Between 5 and 7
C. Below 5
D. 7
18.Which one of the following products is obtained when sulphur trioxide is absorbed in concentrated sulphuric acid?
A. Oleum
B. Aqua Regia
C. Hydrogen sulphide
D. Oleum
19.Which one of the following compound is a ketone?
A. CH3 ― O ― CH2 ― CH
B. CH3 ― CO ― CH2 ― CH3
C. CH3COCOOH
D. CH3 ― O ― CH2 ― CH
20.Addition of unsymmetrical reagent to an unsymmetrical alkene is governed by
A. Cannizzaro’s Reaction
B. Kirchhoff Rule
C. Aldol Condensation
D. Cannizzaro’s Reaction
21.Ethylene glycols are used as
A. Anesthetic
B. Knocking agent
C. Aldol Condensation
D. Anesthetic
22.The halothane used in hospitals as an anesthetic is chemically
A. 1-Bromo-1-chloro-2, 2, 2-trifluroethane
B. 2-Bromo-2-chloro-1, 1, 1-trifluroethane
C. 1, 1, 1-Triflouro-2-bromo-2-chloroethane
D. 1-Bromo-1-chloro-2, 2, 2-trifluroethane
23.If halogenoalkanes are mixed with an excess of ethanoic ammonia and heated under pressure, amine are formed. Which amine is formed in the following reaction?
A. CH3―CH2―NH―CH2―CH3
B. CH3―CH2―NH2
C. CH3―CH2―CH2―NH2
D. CH3―CH2―NH―CH2―CH3
24.Primary, secondary and tertiary alcohols can be identified and distinguished by
A. Lucas test
B. Iodoform test
C. Baeyer’s test
D. Lucas test
25. Which one of the following alcohol is indicated by formation of yellow crystals in Iodoform test?
A. Methanol
B. Ethanol
C. Butanol
D. Methanol
26.Choose the correct option
A. This is different to what had been expected.
B. This is different what had been expected.
C. This is different from what had been expected.
D. This is different to what had been expected.
27.Choose the correct option
A. He suddenly remembered that he has left his house unlocked.
B. He suddenly remembered that he may have left his house unlocked.
C. He suddenly remembered that he had left his house unlocked.
D. He suddenly remembered that he has left his house unlocked.
28.Choose the correct option
A. He asked us would we care to go.
B. He asked us if we would care to go.
C. He asked us we would care to go
D. He asked us would we care to go.
29.Choose the correct option
A. When this war is over, no nation will either be isolated in war or peac
B. When this war is over, no nation will be either isolated in war or peace.
C. When this war is over, no nation will neither be isolated in war nor peace.
D. When this war is over, no nation will either be isolated in war or peac
30.Choose the correct option
A. When the fact failed him, he questions his senses.
B. When the fact failed him, he questioned from his senses.
C. When the fact fails him, he questions his senses.
D. When the fact failed him, he questions his senses.
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