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Home » Medical Papers » Aptitude Test - 17
Hassan
1.Melting point of water is higher than petrol, because intermolecular forces in water are:
A. Weaker than petrol
B. Stronger than petrol
C. Same as in petrol
D. Weaker than petrol
2.Conservation of mass of fluid flow leads to
A. Bernoulli’s equation
B. Venturi meter
C. Equation of motion
D. Bernoulli’s equation
3.DNA molecule is double stranded, in which two chains of DNA are twisted around each other by:
A. Hydrogen bonds
B. Vander Waal's force
C. Covalent bonds
D. Hydrogen bonds
4.The elements for which the value of ionization energy is low, can:
A. Gain electrons readily
B. Gains electron with difficulty
C. Loss electrons less readily
D. Gain electrons readily
5.The blood vessels collapse when
A. External pressure applied becomes greater than the systolic pressure
B. External pressure applied is equal to systolic pressure
C. External pressure applied is less than the systolic pressure
D. External pressure applied becomes greater than the systolic pressure
6.An oscillating body is at mean position at t = 0. At t = T/4 it will be at
A. Extreme position
B. Mean position
C. Between extreme and mean position
D. Extreme position
7.The nature of cathode rays in discharge tube:
A. Depends on the nature of gas taken in the discharge tube
B. Depends upon the nature of cathode in discharge tube
C. Is independent of the nature pf the gas in discharge tube
D. Depends on the nature of gas taken in the discharge tube
8.In a simple pendulum, the tension of the string is
A. g cos θ
B. mg sin θ
C. mg cos θ
D. g cos θ
9.The ability of an atom in a covalent bond to attract the bonding electrons is called:
A. Ionization energy
B. Ionic bond energy
C. Electronegativity
D. Ionization energy
10.Two sound waves having the same amplitudes are moving in the same direction are out of phase. The amplitude of the resultant wave is
A. Zero amplitude
B. The sum of amplitude of the two waves
C. Difference of the amplitudes of the two waves
D. Zero amplitude
11.The paramagnetic character of a substance is due to:
A. Bond pairs of electrons
B. Lone pairs of electrons
C. Unpaired electrons in atom or molecule
D. Bond pairs of electrons
12.A source ‘Y’ of unknown frequency produces 4 beats with a source of 240 Hz and 8 beats with a sound of 252 Hz. Frequency of the source ‘Y’ is
A. 244 Hz
B. 236 Hz
C. 248 Hz
D. 244 Hz
13.An organ pipe closed at one end has a length of 25 cm. Wavelength of the fundamental note is
A. 25 cm
B. 50 cm
C. 100 cm
D. 25 cm
14.Lattice energy of an ionic crystal is the enthalpy of:
A. Combustion
B. Dissociation
C. Dissolution
D. Combustion
15.In Newton ring apparatus, at the point of contact of the lens and glass plate, the additional path difference introduced is
A. λ/4
B. λ/2
C. λ
D. λ/4
16.In standard enthalpy of atomization, heat of the surrounding:
A. Remains unchanged
B. Increases
C. Increases than decreases
D. Remains unchanged
17.Mole fraction of any compound us the ratio of moles of all components in a:
A. Compound
B. Solution
C. Molecule
D. Compound
18.The path difference ‘BD’ for destructive interference is
A. (m + ½) λ
B. mλ
C. d sin θ
D. (m + ½) λ
19.In the case of a grafting spectrometer, the resolving power ‘R’ of the grating is defined as
A. λ / Δλ
B. λ / D
C. λ / λ1
D. λ / Δλ
20.Which one of the following lights travels fastest in optical fibers?
A. Visible light
B. Ultraviolet light
C. Ordinary light
D. Visible light
21.Molarity is defined as the number of moles of any substance dissolved:
A. Per dm3 of water
B. In one gram of water
C. Per m3 of water
D. Per dm3 of water
22.The value of universal gas constant is
A. 8.314 Jmol-1K-1
B. 8.324 Jmol-1 K-1
C. 7.23 Jmol-1K-1
D. 8.314 Jmol-1K-1
23.The turbine in a steam power plant takes steam from a boiler at 427 °C and exhausts into a low temperature reservoir at 77 °C. What is the maximum possible efficiency?
A. 50%
B. 40%
C. 60%
D. 50%
24.Which one of the following is a postulate of kinetic theory of gases?
A. Molecules do not exert force on each other
B. The size of molecules is much larger than separation between the molecules
C. A finite volume of gas consists of a very small number of molecules
D. Molecules do not exert force on each other
25.In electrolytic cell, a salt bridge is used in order to:
A. Pass the electric current
B. Prevent the flow of ions
C. Mix solution of two half cells
D. Pass the electric current
26.Which one is not an irreversible process?
A. Slow compression of a gas into a cylinder
B. Changes due to friction
C. Explosion
D. Slow compression of a gas into a cylinder
27.In all oxidation reactions, atoms of an element in a chemical species lose electrons and increase their:
A. Oxidation states
B. Reductions
C. Electrode
D. Oxidation states
28.SI unit of electric flux is
A. NmC-1
B. Nm-2 C-2
C. Nm2 C-2
D. NmC-1
29.In 'AgCl' solution. Some salt of NaCl is added, 'AgCl' will be precipitated due to:
A. Solubility
B. Electrolyte
C. Unsaturation effect
D. Solubility
30.The equivalent current which passes from a point at higher potential to a point at a lower potential as if it represented a movement of positive charges is
A. Electronic current
B. Electric current
C. Magnetic lines
D. Electronic current
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