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ECAT (Engineering College Admission Test)
University of Engineering & Technology (UET), Lahore
UET Lahore ECAT Test Space for preparation together
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Mushkovic
PHYSICS
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Physics
When a helium atom loses an electron, it becomes:
A. An alpha particle..
B. Proton.
C. A positive helium ion..
D. A negative helium ion..
Mushkovic
PHYSICS
-
Physics
Beta ray emitted by a radioactive substance is:
A. An electron which was existing outside the nucleus..
B. An electron which was existing inside the nucleus..
C. An electron emitted by the nucleus as a result of the decay of a neutron inside the nucleus..
D. A pulse of electromagnetic wave..
Mushkovic
PHYSICS
-
Physics
An electric charge in uniform motion produces:
A. An electric field..
B. A magnetic field..
C. Both magnetic and electric fields..
D. Neither magnetic nor electric fields..
Mushkovic
PHYSICS
-
Physics
What is emitted by a hot metal filament in a cathode ray tube?
A. X-ray..
B. Proton..
C. Electron..
D. Photon..
Mushkovic
PHYSICS
-
Physics
If the mass of the bob of a pendulum is doubled its time period is:
A. Halved.
B. Doubled.
C. Unchanged.
D. Increases four times..
Mushkovic
PHYSICS
-
Physics
The center of Newton rings is dark due to
A. Polarization.
B. Destructive interference.
C. Constructive interference.
D. Reflection.
Mushkovic
PHYSICS
-
Physics
Which one is the most stable element on the basis of binding energy?
A. Sn..
B. Fe..
C. Ba..
D. Kr..
Mushkovic
PHYSICS
-
Physics
Resistance in RC circuit of time constant 2 seconds is 1000 Ohms. What is the value of C in the circuit?
A. 20 μ farad..
B. 200 μ farad..
C. 2000 μ farad..
D. 2 μ farad..
Mushkovic
PHYSICS
-
Physics
The Lenz’s law refers to induced __________
A. emf..
B. Resistance..
C. Shear..
D. Currents..
Mushkovic
PHYSICS
-
Physics
In which of the following, output is similar to NAND gate if input A=0 and input B=1.
A. Both B and C..
B. XOR..
C. XNOR..
D. NOR..
Mushkovic
PHYSICS
-
Physics
For atomic hydrogen spectrum, which of the following series lies in visible region of electromagnetic spectrum?
A. Lyman series..
B. Paschen series..
C. Balmer series..
D. Bohr series..
Mushkovic
PHYSICS
-
Physics
__________ are the particles that experience strong nuclear force.
A. Neutrons..
B. Neutrinos..
C. Muons..
D. Electrons..
Mushkovic
PHYSICS
-
Physics
The vertical velocity of ball thrown upward __________ with time.
A. Decreases linearly..
B. Remains constant..
C. Doubles..
D. Decreases parabolically..
Mushkovic
PHYSICS
-
Physics
The force required to bend the normally straight path of a particle into a circular path is called __________ force.
A. Traveling..
B. Bending..
C. Centrifugal..
D. Centripetal..
Mushkovic
PHYSICS
-
Physics
A disc at rest without slipping, rolls down a hill of height (3 x 9.8) m. What is its speed in m/sec when it reaches at the bottom?
A. 11.4..
B. 19.6..
C. 22.8..
D. 9.8..
Mushkovic
PHYSICS
-
Physics
Tuning of the radio is the best example of electrical __________
A. Resonance..
B. Resistance..
C. Current..
D. None of these..
Mushkovic
PHYSICS
-
Physics
A standing wave pattern is formed when the length of string is an integral multiple of __________ wavelength.
A. Triple..
B. Half.
C. Full.
D. Double.
Mushkovic
PHYSICS
-
Physics
Which of the following lights travels the fastest in optical fibres?
A. Visible light..
B. Invisible infra-red..
C. Ultra-violet..
D. Ordinary light..
Mushkovic
PHYSICS
-
Physics
The algebraic sum of potential changes in a closed circuit is zero is Kirchhoff’s __________ rule.
A. Third.
B. Second.
C. First.
D. All of these.
Mushkovic
PHYSICS
-
Physics
In LED when an electron combines with a __________ during forward bias conduction, a photon of visible light is emitted.
A. High voltage..
B. Photon..
C. Positron..
D. Hole..
Fani Warraich
CHEMISTRY
-
Chemistry
Which type of bonding is present in NH4Cl?
A. Ionic.
B. Covalent.
C. Coordinate covalent..
D. All of these..
Fani Warraich
CHEMISTRY
-
Chemistry
When CuSO4 is electrolyzed in aqueous solution using copper electrodes, then the substance which deposits at the cathode is:
A. Copper metal..
B. Copper ions..
C. Hydrogen..
D. Oxygen..
Mushkovic
CHEMISTRY
-
Chemistry
Aldehydes can be synthesized by the oxidation of:
A. Primary alcohols..
B. Secondary alcohols..
C. Organic acids..
D. Inorganic acids..
Mushkovic
CHEMISTRY
-
Chemistry
The products of the fermentation of a sugar are ethanol and:
A. Oxygen.
B. Carbon dioxide.
C. Water.
D. Sulfur dioxide.
shahzaib hassan
CHEMISTRY
-
Chemistry
What is the molecular geometry of methane (CH4) according to VSEPR theory?
A. Trigonal planar.
B. Tetrahedral.
C. Linear.
D. Octahedral.
shahzaib hassan
CHEMISTRY
-
Chemistry
Which of the following is an example of a strong acid?
A. Acetic acid.
B. Hydrochloric acid.
C. Ammonia.
D. Water.
shahzaib hassan
CHEMISTRY
-
Chemistry
What is the hybridization of the carbon atoms in ethene (C2H4)?
A. sp.
B. sp2.
C. sp3.
D. sp3d.
shahzaib hassan
CHEMISTRY
-
Chemistry
Which of the following molecules exhibits hydrogen bonding?
A. CH4.
B. HCl.
C. NH3.
D. CCl4.
shahzaib hassan
CHEMISTRY
-
Chemistry
Which process describes the conversion of a liquid to a gas at a temperature below its boiling point?
A. Sublimation.
B. Condensation.
C. Evaporation.
D. Freezing.
shahzaib hassan
CHEMISTRY
-
Chemistry
What is the relationship between pressure and volume for a gas at constant temperature, according to Boyle's Law?
A. Directly proportional.
B. Inversely proportional.
C. Independent.
D. Exponentially proportional.
shahzaib hassan
CHEMISTRY
-
Chemistry
Which element has the highest electronegativity?
A. Fluorine.
B. Oxygen.
C. Chlorine.
D. Nitrogen.
shahzaib hassan
CHEMISTRY
-
Chemistry
What is the major product when 2-butene undergoes hydrogenation in the presence of a platinum catalyst?
A. 1-butene.
B. Butane.
C. Butyne.
D. Benzene.
shahzaib hassan
CHEMISTRY
-
Chemistry
Which of the following salts is insoluble in water?
A. NaCl.
B. KBr.
C. AgCl.
D. LiNO3.
shahzaib hassan
CHEMISTRY
-
Chemistry
Which type of radioactive decay results in the release of an electron from the nucleus?
A. Alpha decay.
B. Beta decay.
C. Gamma decay.
D. Positron emission.
shahzaib hassan
CHEMISTRY
-
Chemistry
What is the oxidation state of sulfur in sulfuric acid (H2SO4)?
A. 4.
B. 6.
C. -2.
D. 0.
shahzaib hassan
CHEMISTRY
-
Chemistry
Which of the following describes the process of reducing a ketone to an alcohol?
A. Oxidation.
B. Reduction.
C. Hydrolysis.
D. Dehydration.
shahzaib hassan
CHEMISTRY
-
Chemistry
What is the main characteristic of a buffer solution?
A. It changes pH drastically with added acid.
B. It maintains a constant pH.
C. It neutralizes only bases.
D. It reacts violently with strong acids.
shahzaib hassan
CHEMISTRY
-
Chemistry
Which gas law explains the relationship between temperature and volume at constant pressure?
A. Boyle?s Law.
B. Charles? Law.
C. Avogadro?s Law.
D. Dalton?s Law.
shahzaib hassan
CHEMISTRY
-
Chemistry
What is the coordination number of the central metal ion in the complex [Co(NH3)6]3+?
A. 3.
B. 6.
C. 4.
D. 2.
shahzaib hassan
CHEMISTRY
-
Chemistry
Which of the following best describes a Lewis acid?
A. Donates electrons.
B. Accepts electrons.
C. Donates protons.
D. Accepts protons.
shahzaib hassan
CHEMISTRY
-
Chemistry
In a galvanic cell, what happens at the anode?
A. Oxidation.
B. Reduction.
C. Both oxidation and reduction.
D. No reaction.
shahzaib hassan
CHEMISTRY
-
Chemistry
What is the empirical formula of a compound with 40% carbon, 6.7% hydrogen, and 53.3% oxygen by mass?
A. CHO.
B. CH2O.
C. C2H4O2.
D. C3H6O.
shahzaib hassan
CHEMISTRY
-
Chemistry
Which of the following processes occurs at the cathode in an electrolytic cell?
A. Oxidation.
B. Reduction.
C. Electrolysis.
D. Decomposition.
shahzaib hassan
CHEMISTRY
-
Chemistry
What type of intermolecular force is the strongest?
A. London dispersion forces.
B. Dipole-dipole interactions.
C. Hydrogen bonding.
D. Van der Waals forces.
Contributor(3)
Fani Warraich
shahzaib hassan
Mushkovic