#1
Which of the following is a chemical element?
Oxygen
ExplanationOxygen is a chemical element with the symbol O and atomic number 8.
#2
What is the SI unit of energy?
Joule
ExplanationThe joule is the SI unit of energy, defined as the work done by a force of one newton acting through one meter.
#3
Which subatomic particle carries a positive charge?
Proton
ExplanationA proton is a subatomic particle that carries a positive electric charge.
#4
What is the formula to calculate kinetic energy?
KE = 1/2 mv^2
ExplanationKinetic energy (KE) is calculated using the formula KE = 1/2 mv^2, where m represents mass and v represents velocity.
#5
What is the atomic number of carbon?
6
ExplanationCarbon has an atomic number of 6, indicating the number of protons in its nucleus.
#6
Which law states that energy cannot be created or destroyed, only transformed or transferred?
Law of Thermodynamics
ExplanationThe Law of Thermodynamics, specifically the First Law, states that energy can neither be created nor destroyed, only transformed from one form to another.
#7
What is the unit of electric charge?
Coulomb
ExplanationThe coulomb (C) is the SI unit of electric charge, equivalent to the charge transported by a constant current of one ampere in one second.
#8
Who proposed the theory of relativity?
Albert Einstein
ExplanationAlbert Einstein proposed the theory of relativity, which revolutionized the understanding of space, time, and gravity.
#9
What is the process of a solid turning into a gas without passing through the liquid state called?
Sublimation
ExplanationSublimation is the process in which a solid transforms directly into a gas without passing through the liquid phase.
#10
What is the process of converting light energy into chemical energy in plants called?
Photosynthesis
ExplanationPhotosynthesis is the process by which green plants and some other organisms use sunlight to synthesize foods with the help of chlorophyll.
#11
What is the term for the energy possessed by a body due to its motion?
Kinetic energy
ExplanationKinetic energy is the energy possessed by a body due to its motion.
#12
What is the phenomenon where a substance changes from a gas to a solid without passing through the liquid state called?
Deposition
ExplanationDeposition is the phenomenon where a substance changes directly from a gas to a solid without passing through the liquid phase.