Science

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Explore Science MCQs! Test knowledge on Biology, Chemistry, Physics, Astronomy, Earth Science & General Science. Free quizzes at TheQuizWire.

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1. What stage occupies the vast majority (approximately 90%) of a star's lifetime, during which it generates energy by fusing hydrogen into helium in its core?

  • The Planetary Nebula Stage
  • The Main Sequence
  • The Red Giant Phase
  • The Protostar Phase

2. A conserved copper-binding gene cluster has been identified in which type of organisms?

  • Freshwater algae
  • Desert fungi
  • Marine bacteria
  • Arctic archaea

3. On the modern periodic table, elements are primarily arranged according to their:

  • Number of valence electrons.
  • Increasing atomic number.
  • Increasing atomic mass.
  • Decreasing atomic radius.

4. Who was the first person known to use a telescope for systematic astronomical observations, leading to discoveries that supported the heliocentric model?

  • Johannes Kepler
  • Galileo Galilei
  • Isaac Newton
  • Nicolaus Copernicus

5. Which subatomic particle carries a negative electrical charge and is typically found orbiting the nucleus of an atom?

  • Proton
  • Neutron
  • Ion
  • Electron

6. What celestial objects are known to produce powerful relativistic jets?

  • Black Holes
  • Supernovae
  • White Dwarfs
  • Pulsars

7. Which of the following is Earth's outermost solid layer?

  • Inner Core
  • Crust
  • Mantle
  • Outer Core

8. What numerical scale is primarily used to indicate the acidity or alkalinity of a solution?

  • Kelvin scale
  • Mohs scale
  • pH scale
  • Richter scale

9. The R package MultiModalGraphics is designed primarily for which type of data processing?

  • Graphical integration of multi-omics datasets
  • Real-time satellite image analysis
  • High-frequency stock market modeling
  • Creating machine learning language models

10. A substance that cannot be broken down into simpler chemical substances by ordinary chemical means is known as a(n):

  • Solution
  • Compound
  • Element
  • Mixture

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