Sindh MDCAT 2023 Paper 121- Why do transition elements form interstitial compounds? A. Presence of unpaired electronsB. Transition of elements within d orbitalsC. Holes present in the crystal lattice of transition elementsD. Small, highly charged ions and vacant d-orbitals of suitable energy View Answer Answer : C. Holes present in the crystal lattice of transition elements Description 122- The ligand, diethylene triamine, is an example of: A. BidentateB. TridentateC. PentadentateD. Hexadentate View Answer Answer : B. Tridentate Description 123- In which spectral series is the far ultraviolet region of the electromagnetic spectrum found? A. Paschen seriesB. Balmer seriesC. Lyman seriesD. Pfund series View Answer Answer : C. Lyman series Description 124- Ohm's law is applicable if: A. The temperature of the conductor becomes infiniteB. The temperature of the conductor increases C. The temperature of the conductor decreases D. The temperature of the conductor remains the same View Answer Answer : D. The temperature of the conductor remains the same Description 125- Which of the following refers to the DC current that does not change its intensity? A. Eddy’s currentB. Surge current C. Leakage currentD. Steady current View Answer Answer : D. Steady current Description 126- The internal resistance of a battery is: A. In parallel to the external loadB. In series to the external loadC. Not connected to the external load D. Zero View Answer Answer : B. In series to the external load Description 127- The electric potential set across the terminals of a battery is called: A. Potential differenceB. EMFC. Internal potential groupD. Terminal voltage View Answer Answer : D. Terminal voltage Description 128- 1 J/sec is equal to: A. 1 KB. 1 NC. 1 TD. 1 Watt View Answer Answer : D. 1 Watt Description 129- Which of the following corresponds to the momentum of a photon? A. hλB. h/λC. λ/hD. h²/λ² View Answer Answer : B. h/λ Description 130- If the wavelength of light is 3×10⁻³, then what is its frequency? A. 1×10¹³ HzB. 1×10¹³ Hz C. 1×10¹⁴ Hz D. 1×10¹⁶ Hz View Answer Answer : A. 1×10¹³ Hz Description 131- The energy of light is determined by its: A. FrequencyB. IntensityC. AmplitudeD. Speed View Answer Answer : A. Frequency Description 132- On which principle does the transformer work? A. Self-inductionB. Mutual inductionC. Motional EMFD. Magnetic torque View Answer Answer : B. Mutual induction Description 133- If a transformer has 500 turns on the primary coil and 250 turns on the secondary coil, then: A. Output voltage is half of input voltageB. Output and input voltages are equalC. Output voltage is double of input voltageD. Output voltage is zero View Answer Answer : A. Output voltage is half of input voltage Description 134- Which of the following defines the change in magnetic flux per unit area? A. Magnetic fieldB. Magnetic forceC. Magnetic dipoleD. Magnetic flux density View Answer Answer : D. Magnetic flux density Description 135- What is the dot product of magnetic induction and unit area? A. Magnetic fluxB. Magnetic inductionC. Magnetic fieldD. Magnetic pole View Answer Answer : A. Magnetic flux Description 136- What does the magnetic flux measure? A. Area surrounded by a magnet B. Rate of change of magnetic force C. The number of magnetic lines of forceD. The number of magnetic lines of force View Answer Answer : D. The number of magnetic lines of force Description 137- The change in electric potential with respect to distance equals to: A. Surface charge densityB. Potential differenceC. Amount of the charge D. Potential gradient View Answer Answer : D. Potential gradient Description 138- The amount of energy required in moving an electron of charge (e) by the application of 2-volt potential difference equals to: A. 1 keVB. 1 MeVC. 1 GeVD. 1 eV View Answer Answer : D. 1 eV Description 139- Which law explains the relation between the amount of charges and the force between them? A. Ohm’s law B. Lenz’s lawC. Coulomb’s lawD. Ampere’s law View Answer Answer : C. Coulomb's law Description 140- What does the electric field around a charge represent? A. Size of the chargeB. Effective area for electrostatic forceC. Path followed by the chargeD. Speed of the charge View Answer Answer : B. Effective area for electrostatic force Description 1 2 3 4 5 6 7 8 9 10
