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Home » Medical Papers » UHS MDCAT » Aptitude Test - 38
1.Magnetic Resonance Imaging (MRI) is used to identify the image of
A. Tumors and inflamed tissues
B. Blood cells
C. Skin cells
D. Tumors and inflamed tissues
2.Bones absorb greater amount of incident X-rays than flesh. This is because of the fact that
A. Bones lie between the flesh
B. Bones are light in color
C. Bones contain material of low densities
D. Bones lie between the flesh
3.Which of the following techniques is the practical application of X-rays?
A. Magnetic Resonance Imaging
B. Ultrasonography
C. Computerized Axial Topography
D. Magnetic Resonance Imaging
4.Which one of the following has the largest energy content?
A. γ-rays
B. X-rays
C. Infra-red radiations
D. γ-rays
5.What will be the energy of accelerated electron used to produce X-rays when the accelerating potential is 2 kV?
A. 2 x 10-19 J
B. 1.6 x 10-19 J
C. 3.2 x 1019 J
D. 2 x 10-19 J
6.Process of generating three dimensional images of objects by using laser beam is called
A. Photography
B. 3-D cinema
C. Holography
D. Photography
7.Which one of the following isotopes of Iodine is used for the treatment of thyroid cancer?
A. I - 113
B. I - 120
C. I - 131
D. I - 113
8.A Uranium isotope 92U 232 undergoes one α–decay and one β -1 0 – decay. What is the final product?
A. 90
B. 92
C. 89
D. 90
9.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
10.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
11.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
12.Ice is less dense than water at:
A. 0 oC
B. 4 oC
C. -4 oC
D. 0 oC
13.At a given temperature and pressure, the one which shows marked deviation from ideal behavior is
A. N2
B. N3
C. CO2
D. N2
14.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
15.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
16.In SO4-2 the oxidation number of Sulphur is
A. -8
B. +8
C. -6
D. -8
17.Coinage metals Cu, Ag, and Au are the least reactive because they have:
A. Negative reduction potential
B. Positive reduction potential
C. Negative oxidation potential
D. Negative reduction potential
18.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
19.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
20.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
21.Which one of the following noble gases is used for providing an inert atmosphere for welding?
A. Helium
B. Neon
C. Argon
D. Helium
22.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
23.The pH of acid rain is
A. 7
B. Between 5 and 7
C. Below 5
D. 7
24.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
25.Which one of the following compound is a ketone?
A. CH3 ― O ― CH2 ― CH3
B. CH3 ― CO ― CH2 ― CH3
C. CH3COCOOH
D. CH3 ― O ― CH2 ― CH3
26.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
27.Ethylene glycols are used as
A. Anesthetic
B. Knocking agent
C. Freezing agent
D. Anesthetic
28.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
29.Primary, secondary and tertiary alcohols can be identified and distinguished by
A. Lucas test
B. Iodoform test
C. Baeyer’s test
D. Lucas test
30.Which one of the following alcohol is indicated by formation of yellow crystals in Iodoform test?
A. Methanol
B. Ethanol
C. Butanol
D. Methanol
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