List of top Water Science and Technology Questions

In a soil saturated with water
The settling rates of dispersed soil particles in hydrometer method of soil texture determination is governed by
Given below are two statements, one is labelled as Assertion A and the other is labelled as Reason R
Assertion A: Evapotranspiration decreases with increasing salinity level in soil.
Reason R: Low water availability is caused by high osmotic pressure of soil solution.
In light of the above statements, choose the correct answer from the options given below
Some plants are able to excrete the absorbed salts through specialised structures
A. Stomata
B. Hydathodes
C. Guard cells
D. Chloroplast
E. Capillary
Choose the correct answer from the options given below:
Assumptions made in Darcy's law are
A. Kinetic energy of water is negligible
B. Mass density of water is constant
C. Viscosity of water is constant
D. Flow is turbuelnt
E. Viscosity of water is not constant
Choose the correct answer from the options given below:
Where will be the location of centre of pressure if a beaker contains water up to a height of 'h'
Given below are two statements
Statement I: If net work done is positive, the kinetic energy of a moving object increases.
Statement II: If net work done is negative, the displacement of a moving object accelerates.
In light of the above statements, choose the most appropriate answer from the options given below
rH is used to indicate?
Phosphate potential \((pK_{sp})\) = ?
What is the pressure exerted in \(\text{kN/m}^2\) at a point \(1070\text{ mm}\) below the free surface of water?
The change in volume of a certain mass of liquid is observed to be \(1/500\) of original volume, when pressure on it is increased by \(50 \text{ kgf/cm}^2\) (or \(5000\text{ kN/m}^2\)). Find the bulk modulus of liquid
The motor used for the compressors is
What is Joule/second
Match List I with List II
List I:
A. Profit maximization factor demand function
B. Not a market failure
C. Most liquid asset
D. Coefficient of determination \(R^2\)
List II:
I. ESS/TSS
II. Factor and output prices
III. Bonds
IV. Economics of scale
Choose the correct answer from the options given below:
“The market value of all final goods and services produced within a nation in a given year.” This is best describes
The hydraulic jump occurs in a channel when
Forces are called coplanar when all of them acting on a body lie in
The differential equation corresponding to \(y = e^{mx}\) by eliminating \(m\) is
Solve the differential equation
\[ \cos x \frac{dy}{dx} - \cos 2x = \cos 3x \]
Solve
\[ y e^{x/y} dx = (x e^{x/y} + y^2) dy, \quad y \neq 0 \]
The procedure adopted in the Gauss- Jordan method in solving linear simultaneous equation is that
A. It is required to assume initial approximate values of the variables
B. It reduces the given system of equation to an equivalent triangular system
C. It reduces the given system of equation to a diagonal matrix
D. The given matrix is factored into lower and upper triangular matrix
Choose the correct answer
One newton is equal to_____
When common salt is dissolved in water, the surface tension of saltwater is
If coefficient of variation is 100, the mean of the data is 25, the standard deviation
Given below are two statements, one is labelled as Assertion A and the other is labelled as Reason R
Assertion A: The polynomial equation \(x(x+1) + 8 = (x+2) \times (x-2)\) is a linear equation.
Reason R: There is only one variable.
In light of the above statements, choose the correct answer: