Units & Measurements
What is the SI unit of surface tension?
N m⁻¹
Science One Liner Questions with Answers
Practice exam-ready one liner questions for Science with quick answers for SSC, Railway, Banking and competitive exams.
Total Questions: 316
Units & Measurements
If the density of a substance is 8 g/cm³, what is its value in SI units?
8×10³ kg/m³
Units & Measurements
One Newton is equal to how many dynes?
10⁵ dyne
Modern Physics
Who discovered cathode rays (electrons)?
J.J. Thomson
Heat
What is the relationship between linear (α), area (β), and volume (γ) coefficients of thermal expansion?
α : β : γ = 1 : 2 : 3
Heat
What is the formula for linear expansion coefficient (α)?
α = (increase in length) / (original length × temperature rise)
Heat
How many methods of heat transmission (transfer) are there?
3
Physics
Which physical quantity depends on direction?
Velocity
Physics
Which instrument is used to observe tiny objects?
Microscope
Physics
Which instrument is used to observe distant objects?
Telescope