Mass per unit volume of a liquid at standard temperature and pressure is designated as ____________________?
Show answer Hide answer
Answer: C. Mass density
Explanation
Mass density is defined as the mass of a substance per unit volume at standard conditions. This fundamental physical property quantifies how tightly matter is packed within a specific liquid volume. Water has a standard mass density of approximately one thousand kilograms per cubic meter. Fluid mechanics relies on mass density to calculate hydrostatic pressures, buoyancy forces, and dynamic flows. Standard temperature and pressure reference points ensure consistent measurements across various scientific experiments. Density changes slightly with variations in temperature and pressure for most liquid substances.
Engineers use mass density values when designing hydraulic systems, pipelines, and floating marine vessels. Knowing fluid density is essential for calculating accurate Reynolds numbers in pipe flow analysis. Quality control laboratories monitor liquid densities to verify chemical purity and concentration standards. Specific weight measures gravitational force per unit volume rather than the pure mass per unit volume. Specific gravity is a dimensionless ratio comparing a substance density to the density of pure reference water. Selecting none of these is incorrect because mass density is the exact scientific term defined by this property.
- Subject
- Agriculture
- Category
- Agriculture
- Topic
- —
- Difficulty
- medium
Related questions
Q1. The lines within a flow net illustrating the path of water movement through soil beneath a dam are called _________________?
Show answer Hide answer
Answer: B. flow lines
Flow lines within a flow net graphically represent the actual paths that water seepage follows. Water molecules travel along these continuous lines through permeable soil layers beneath concrete dams. Each flow line trac...
Q2. Hydraulic structures like dams and barrages built on permeable foundations are prone to failure due to ___________________?
Show answer Hide answer
Answer: A. Piping
Hydraulic structures built on permeable foundations experience continuous seepage flow beneath the base slab. High exit gradients can cause soil particles to be washed away, creating underground channels known as piping....
Q3. The irrigation method where each tree is encircled by a basin to form a pool during watering is called ________________?
Show answer Hide answer
Answer: B. Basin irrigation
Basin irrigation involves enclosing individual trees with a circular earthen basin to pool water during watering. This method creates a shallow pond around the root zone, ensuring deep saturation for orchard crops. Water...
Q4. The maximum rate at which a soil under specific conditions can absorb water is called ___________________?
Show answer Hide answer
Answer: C. Infiltration capacity
Infiltration capacity represents the maximum rate at which a specific soil can absorb applied water. When rainfall intensity exceeds this capacity, excess water begins to accumulate and form surface runoff. Soil moisture...
Q5. The piezometric water level in a well at zero discharge is termed ___________________?
Show answer Hide answer
Answer: B. Static water level
The static water level represents the natural ambient water table elevation inside an inactive well. It is measured when the well is experiencing zero discharge and has reached hydraulic equilibrium. This baseline measur...
Q6. The meandering course of a river is developed through ____________________?
Show answer Hide answer
Answer: B. Dominant discharge
River meandering is primarily formed and maintained by the dominant discharge flowing through the channel. This channel-forming discharge transports sediment loads while continuously eroding outer banks and depositing in...