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Home » Medical Papers » UHS MDCAT » Aptitude Test - 4
1.In a microwave oven, the wave produced has a wavelength of 12 cm at a frequency of
A. 2452 Hz
B. 2456 Hz
C. 2455 Hz
D. 2452 Hz
2.The deviation of I-V graph from the straight line is due to:
A. Decrease in temperature and decrease in resistance
B. Increase in temperature and increase in resistance
C. Decrease in temperature and increase in resistance
D. Decrease in temperature and decrease in resistance
3.The fractional change in resistance per Kelvin is known as
A. Temperature coefficient of resistance
B. Thermal coefficient
C. Linear coefficient of expansion
D. Temperature coefficient of resistance
4.The energy supplied by the cell to the charge carriers is derived from the conversion of:
A. Heat energy into Electrical energy
B. Chemical energy into Electrical energy
C. Solar energy into Electrical energy
D. Heat energy into Electrical energy
5.Force experienced by a moving change in a magnetic field is:
A. F = BA cosÏ´
B. F = μo NI
C. F = q (v x B)
D. F = BA cosÏ´
6.What shunt resistance must be connected across a Galvanometer of 20 Ω resistance which gives full scale deflection with 2.0 A current, so as to convert it into an Ammeter of range 10 A?
A. 5 Ω
B. 2 Ω
C. 3 Ω
D. 5 Ω
7.The current measuring part of the Avometer consists of number of low resistances connected
A. ) At an angle of 180° with the galvanometer
B. Parallel with the galvanometer
C. At an angle of 45° with the galvanometer
D. ) At an angle of 180° with the galvanometer
8.A charge of two micro coulombs (2 μC) moves with velocity of two meter per second (2 m/sec) in the direction of two Tesla magnetic field. The force that will act on it will be:
A. 2 N
B. Zero
C. 8 N
D. 2 N
9.We have two coils placed close to each other. When we switch on the battery connected to primary coil while keeping the sliding contact of rheostat at fixed position, the reading of Galvanometer:
A. First increases and then becomes zero
B. First increases and then becomes constant at some value
C. Increases with the passage of time
D. First increases and then becomes zero
10.Power losses in a transformer can be minimized:
A. By increasing turn ratio
B. By decreasing turn ratio
C. By stopping the flow of Eddy currents
D. By increasing turn ratio
11.Frequency of L-C circuit will resonate under the driving action of the antenna by angular value of:
A. Capacitance
B. Impedance
C. Inductance
D. Capacitance
12.To convert the Si crystal into p-type semi-conductor, which group element will be doped:
A. Trivalent Element
B. Second Group Element
C. Fourth Group Element
D. Trivalent Element
13.Each molecule of haemoglobin is made up of nearly
A. 11000 atoms
B. 6600 atoms
C. 10000 atoms
D. 11000 atoms
14.A limiting reactant is the one which:
A. Is mostly a cheaper substance and taken in larger quantity
B. Is consumed earlier and controls the amount of product formed in a chemical reaction
C. Gives greatest number of moles of products
D. Is mostly a cheaper substance and taken in larger quantity
15.The acid which can be purified by the sublimation is:
A. Acetic Acid
B. Benzoic Acid
C. Oxalic Acid
D. Acetic Acid
16.Paper chromatography is used for:
A. Elemental Analysis
B. Industrial Purification
C. Qualitative Analysis
D. Elemental Analysis
17.In the process of respiration there is application of
A. Dalton’s Law
B. Charles’s Law
C. Boyle’s Law
D. Dalton’s Law
18.The formula of acrylonitrile is:
A. CH3=CH―CN
B. CH3―CH2―CH2―CN
C. CH3―CH2―CN
D. CH3=CH―CN
19.Which compound is the most reactive one?
A. Ethyne
B. Ethane
C. Benzene
D. Ethyne
20.Grignard reagents are prepared by the reaction of magnesium metal with alkyl halides in the presence of
A. Dry Ether
B. CS2
C. Alcohol
D. Dry Ether
21.When n-butyl magnesium iodide is treated with water, the product is
A. n-butane
B. Iso-butane
C. Propane
D. n-butane
22.Phenol reacts with concentrated H2SO4 to give
A. ortho hydroxy benzene sulphonic acid
B. meta hydroxy benzene sulphonic acid
C. ortho and para hydroxy benzene sulphonic acid
D. ortho hydroxy benzene sulphonic acid
23.Phenol can be distinguished from alcohol by adding
A. Br2/H2O
B. Cl2/H2O
C. FeSO4
D. Br2/H2O
24.In the conversion of ethylene into acetaldehyde, cupric chloride acts as
A. Initiator
B. Promoter
C. Catalyst
D. Initiator
25.When acetone is heated in the presence of K2Cr2O7/H2SO4, the products formed are
A. Maleic Acid and Fumaric Acid
B. Acetic Acid and Formic Acid
C. Formic Acid and Oxalic Acid
D. Maleic Acid and Fumaric Acid
26.Which acid is used in the manufacture of plastics?
A. Carbolic Acid
B. Acetic Acid
C. Carbonic Acid
D. Carbolic Acid
27.In conjugated protein molecules, the protein is attached or conjugated to some non-protein group which are called:
A. Prosthetic Group
B. Aldehyde Group
C. Hydrogen Bonding
D. Prosthetic Group
28.Micronutrients are required in quantity ranging from:
A. 6 – 200 g per acre
B. 6 – 200 kg per acre
C. 4 – 40 g per acre
D. 6 – 200 g per acre
29.Potassium fertilizers are especially useful for
A. Mango
B. Tobacco
C. Wheat
D. Mango
30.The yellowish colour of photochemical smog is due to the presence of
A. Nitrogen dioxide
B. Dinitrogen trioxide
C. Nitrous oxide
D. Nitrogen dioxide
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