Natural Science MCQs (701–750) – Page 15
Advanced & Exam-Level Science MCQs
- Which phenomenon explains total internal reflection?
a) Reflection
b) Refraction
c) Diffraction
d) Interference
Answer: a - Which wave is longitudinal?
a) Light
b) Sound
c) X-rays
d) Radio waves
Answer: b - Which is scalar quantity?
a) Velocity
b) Force
c) Speed
d) Acceleration
Answer: c - SI unit of voltage:
a) Ampere
b) Volt
c) Ohm
d) Watt
Answer: b - Which law explains action and reaction?
a) Newton’s First Law
b) Newton’s Second Law
c) Newton’s Third Law
d) Ohm’s Law
Answer: c - Best conductor of heat:
a) Copper
b) Silver
c) Aluminium
d) Iron
Answer: b - Which element is alkaline earth metal?
a) Sodium
b) Magnesium
c) Potassium
d) Iron
Answer: b - Which acid present in stomach?
a) Sulfuric acid
b) Hydrochloric acid
c) Nitric acid
d) Acetic acid
Answer: b - Which gas is inert?
a) Oxygen
b) Nitrogen
c) Helium
d) Hydrogen
Answer: c - Which process converts solid to gas?
a) Melting
b) Sublimation
c) Freezing
d) Condensation
Answer: b - Transport of food in plants occurs through:
a) Xylem
b) Phloem
c) Root
d) Leaf
Answer: b - Which organ controls involuntary actions?
a) Cerebrum
b) Cerebellum
c) Medulla
d) Spinal cord
Answer: c - Universal receiver blood group:
a) O
b) A
c) B
d) AB
Answer: d - Vitamin for bones:
a) A
b) B
c) C
d) D
Answer: d - Main organ of respiration:
a) Heart
b) Lungs
c) Brain
d) Kidney
Answer: b - Gas absorbed during respiration:
a) CO2
b) O2
c) N2
d) H2
Answer: b - Largest ecosystem:
a) Forest
b) Desert
c) Ocean
d) Grassland
Answer: c - Main greenhouse gas:
a) O2
b) CO2
c) N2
d) H2
Answer: b - Renewable resource:
a) Coal
b) Petrol
c) Solar
d) Diesel
Answer: c - Force between masses:
a) Magnetic
b) Electric
c) Gravitational
d) Friction
Answer: c - SI unit of power:
a) Joule
b) Watt
c) Volt
d) Ampere
Answer: b - Energy due to motion:
a) Potential
b) Kinetic
c) Thermal
d) Chemical
Answer: b - Who discovered proton?
a) Thomson
b) Rutherford
c) Chadwick
d) Dalton
Answer: b - Particle with no charge:
a) Proton
b) Electron
c) Neutron
d) Ion
Answer: c - Least reactive metal:
a) Sodium
b) Calcium
c) Gold
d) Iron
Answer: c - Gas used in photosynthesis:
a) O2
b) CO2
c) N2
d) H2
Answer: b - Part of eye forming image:
a) Retina
b) Iris
c) Cornea
d) Lens
Answer: a - Vitamin for vision:
a) A
b) B
c) C
d) D
Answer: a - Which disease caused by bacteria?
a) Dengue
b) TB
c) COVID-19
d) Flu
Answer: b - Organ filtering blood:
a) Liver
b) Kidney
c) Heart
d) Lung
Answer: b - Cloud formation process:
a) Evaporation
b) Condensation
c) Precipitation
d) Sublimation
Answer: b - Gas supporting combustion:
a) CO2
b) O2
c) N2
d) H2
Answer: b - SI unit of work:
a) Watt
b) Joule
c) Volt
d) Ampere
Answer: b - Device converting electrical to mechanical:
a) Generator
b) Motor
c) Transformer
d) Battery
Answer: b - Gas used in balloons:
a) Oxygen
b) Nitrogen
c) Helium
d) CO2
Answer: c - Closest planet to Sun:
a) Venus
b) Earth
c) Mercury
d) Mars
Answer: c - Largest planet:
a) Earth
b) Mars
c) Jupiter
d) Venus
Answer: c - Red planet:
a) Earth
b) Mars
c) Venus
d) Saturn
Answer: b - Most abundant gas:
a) Oxygen
b) Nitrogen
c) CO2
d) Hydrogen
Answer: b - Layer with weather:
a) Troposphere
b) Stratosphere
c) Mesosphere
d) Thermosphere
Answer: a - Instrument for humidity:
a) Barometer
b) Thermometer
c) Hygrometer
d) Anemometer
Answer: c - Biodegradable item:
a) Plastic
b) Glass
c) Paper
d) Metal
Answer: c - Gas in fire extinguisher:
a) O2
b) CO2
c) N2
d) H2
Answer: b - Organ pumping blood:
a) Brain
b) Heart
c) Kidney
d) Lung
Answer: b - Process releasing energy:
a) Photosynthesis
b) Respiration
c) Transpiration
d) Digestion
Answer: b - Basic unit of life:
a) Atom
b) Cell
c) Tissue
d) Organ
Answer: b - Vitamin deficiency causing rickets:
a) A
b) B
c) C
d) D
Answer: d - Renewable energy example:
a) Coal
b) Petrol
c) Solar
d) Diesel
Answer: c - Organ removing waste:
a) Kidney
b) Heart
c) Brain
d) Lung
Answer: a
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