Natural Science MCQs (501–550) | Advanced Science Questions for Competitive Exams

 

Natural Science MCQs (501–550) – Page 11

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 Advanced & Concept-Based Questions

501. Which phenomenon explains bending of light when it passes from one medium to another?
     a) Reflection
     b) Refraction
     c) Diffraction
     d) Interference
     Answer: b


502. Which type of wave is light?
     a) Mechanical
     b) Longitudinal
     c) Electromagnetic
     d) Sound
     Answer: c


503. Which of the following is a scalar quantity?
     a) Velocity
     b) Acceleration
     c) Force
     d) Distance
     Answer: d


504. SI unit of electric charge is:
     a) Volt
     b) Ampere
     c) Coulomb
     d) Ohm
     Answer: c


505. Ohm’s Law is represented as:
     a) V = IR
     b) F = ma
     c) P = VI
     d) E = mc²
     Answer: a


506. Best conductor of electricity is:
     a) Copper
     b) Aluminium
     c) Silver
     d) Iron
     Answer: c


507. Which element belongs to halogen group?
     a) Sodium
     b) Chlorine
     c) Calcium
     d) Iron
     Answer: b


508. Main acid present in vinegar:
     a) Citric acid
     b) Acetic acid
     c) Lactic acid
     d) Nitric acid
     Answer: b


509. Which is a noble gas?
     a) Oxygen
     b) Nitrogen
     c) Argon
     d) Hydrogen
     Answer: c


510. Process of liquid changing into gas:
     a) Condensation
     b) Freezing
     c) Evaporation
     d) Sublimation
     Answer: c


511. Transport of food in plants occurs through:
     a) Xylem
     b) Phloem
     c) Roots
     d) Leaves
     Answer: b


512. Part of brain responsible for thinking:
     a) Cerebellum
     b) Medulla
     c) Cerebrum
     d) Spinal cord
     Answer: c


513. Universal donor blood group:
     a) A
     b) B
     c) AB
     d) O
     Answer: d


514. Vitamin that boosts immunity:
     a) A
     b) B
     c) C
     d) D
     Answer: c


515. Main organ for digestion:
     a) Brain
     b) Heart
     c) Stomach
     d) Lungs
     Answer: c


516. Gas released during respiration:
     a) Oxygen
     b) Carbon dioxide
     c) Nitrogen
     d) Hydrogen
     Answer: b


517. Largest ecosystem on Earth:
     a) Forest
     b) Desert
     c) Ocean
     d) Grassland
     Answer: c


518. Main greenhouse gas:
     a) Oxygen
     b) Nitrogen
     c) Carbon dioxide
     d) Hydrogen
     Answer: c


519. Which is renewable energy source?
     a) Coal
     b) Petrol
     c) Solar
     d) Diesel
     Answer: c


520. Force acting towards Earth:
     a) Magnetic
     b) Electric
     c) Gravitational
     d) Frictional
     Answer: c


521. SI unit of energy:
     a) Watt
     b) Joule
     c) Volt
     d) Ampere
     Answer: b


522. Energy of moving object:
     a) Potential
     b) Kinetic
     c) Thermal
     d) Chemical
     Answer: b


523. Neutron was discovered by:
     a) Thomson
     b) Rutherford
     c) Chadwick
     d) Bohr
     Answer: c


524. Neutral particle in atom:
     a) Proton
     b) Electron
     c) Neutron
     d) Ion
     Answer: c


525. Least reactive metal:
     a) Sodium
     b) Calcium
     c) Gold
     d) Iron
     Answer: c


526. Gas used in photosynthesis:
     a) Oxygen
     b) Carbon dioxide
     c) Nitrogen
     d) Hydrogen
     Answer: b


527. Part of eye controlling light entry:
     a) Retina
     b) Iris
     c) Cornea
     d) Lens
     Answer: b


528. Vitamin for vision:
     a) A
     b) B
     c) C
     d) D
     Answer: a


529. Bacterial disease example:
     a) COVID-19
     b) Tuberculosis
     c) Dengue
     d) Flu
     Answer: b


530. Organ that filters blood:
     a) Liver
     b) Kidney
     c) Heart
     d) Lungs
     Answer: b


531. Cloud formation process:
     a) Evaporation
     b) Condensation
     c) Precipitation
     d) Sublimation
     Answer: b


532. Gas that supports combustion:
     a) CO2
     b) O2
     c) N2
     d) H2
     Answer: b


533. SI unit of work:
     a) Watt
     b) Joule
     c) Volt
     d) Ampere
     Answer: b


534. Device converting mechanical energy to electrical:
     a) Motor
     b) Generator
     c) Transformer
     d) Battery
     Answer: b


535. Gas used in balloons:
     a) Oxygen
     b) Nitrogen
     c) Helium
     d) CO2
     Answer: c


536. Closest planet to Sun:
     a) Venus
     b) Earth
     c) Mercury
     d) Mars
     Answer: c


537. Largest planet:
     a) Earth
     b) Mars
     c) Jupiter
     d) Venus
     Answer: c


538. Red planet:
     a) Earth
     b) Mars
     c) Venus
     d) Saturn
     Answer: b


539. Most abundant gas in air:
     a) Oxygen
     b) Nitrogen
     c) CO2
     d) Hydrogen
     Answer: b


540. Layer with weather changes:
     a) Troposphere
     b) Stratosphere
     c) Mesosphere
     d) Thermosphere
     Answer: a


541. Instrument measuring humidity:
     a) Barometer
     b) Thermometer
     c) Hygrometer
     d) Anemometer
     Answer: c


542. Biodegradable material:
     a) Plastic
     b) Glass
     c) Paper
     d) Metal
     Answer: c


543. Gas used in fire extinguisher:
     a) O2
     b) CO2
     c) N2
     d) H2
     Answer: b


544. Organ pumping blood:
     a) Brain
     b) Lungs
     c) Heart
     d) Kidney
     Answer: c


545. Unit of resistance:
     a) Volt
     b) Ampere
     c) Ohm
     d) Watt
     Answer: c


546. Process releasing energy:
     a) Photosynthesis
     b) Respiration
     c) Transpiration
     d) Digestion
     Answer: b


547. Basic unit of life:
     a) Atom
     b) Cell
     c) Tissue
     d) Organ
     Answer: b


548. Vitamin deficiency causing rickets:
     a) A
     b) B
     c) C
     d) D
     Answer: d


549. Renewable energy example:
     a) Coal
     b) Petrol
     c) Solar
     d) Diesel
     Answer: c


550. Organ removing waste:
     a) Kidney
     b) Heart
     c) Brain
     d) Lung
     Answer: a

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