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Home » Medical Papers » Aptitude Test - 31
Hassan
1.A naturally occurring radioactive element decays two alpha particles. Which one of the following represents status of daughter element with respect to mass number ‘A’ and charge number ‘Z’?
A. ‘Z’ decreases by 4 and ‘A’ decreases by 2
B. ‘Z’ decreases by 2 and ‘A’ decreases by 4
C. Z’ decreases by 4 and ‘A’ decreases by 8
D. ‘Z’ decreases by 4 and ‘A’ decreases by 2
2.What is the absorbed dose ‘D’ of a sample of 2 kg which is given an amount of 100 J of radioactive energy?
A. 200 Gy
B. 102 Gy
C. 50 Gy
D. 200 Gy
3.A polymer of empirical formula CH2 has molar mass of 28000 g mol-1. Its molecular formula will be
A. 100 times that of its empirical formula
B. 200 times that of its empirical formula
C. 500 times that of its empirical formula
D. 100 times that of its empirical formula
4.The number of molecules in 9 g of ice (H2O) is
A. 6.02 x 1024
B. 6.02 x 1023
C. ) 3.01 x 1024
D. 6.02 x 1024
5.Ice is less dense than water at:
A. 0 o C
B. 4 oC
C. -4 o C
D. 0 o C
6.At a given temperature and pressure, the one which shows marked deviation from ideal behavior is
A. N2
B. N3
C. CO2
D. N2
7.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
8.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
9.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
10.In SO4-2 the oxidation number of Sulphur is
A. -8
B. +8
C. -6
D. -8
11.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
12.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
13.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
14.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]
15.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
16.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
17.Which one of the following noble gases is used for providing an inert atmosphere for welding?
A. Helium
B. Neon
C. Argon
D. Helium
18. 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
19.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
20.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)
21.The pH of acid rain is
A. 7
B. Between 5 and 7
C. Below 5
D. 7
22.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
23.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
24.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
25.Ethylene glycols are used as
A. Anesthetic
B. Knocking agent
C. Aldol Condensation
D. Anesthetic
26.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
27.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
28.Primary, secondary and tertiary alcohols can be identified and distinguished by
A. Lucas test
B. Iodoform test
C. Baeyer’s test
D. Lucas test
29. Which one of the following alcohol is indicated by formation of yellow crystals in Iodoform test?
A. Methanol
B. Ethanol
C. Butanol
D. Methanol
30.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.
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