Recent questions tagged analytical-aptitude

​​​​A researcher added certain amount of $\mathrm{HgCl}_{2}$ to water at $\mathrm{pH} 10$. He calculated the expected concentration of mercury in the water. He asked his ...

​​​​​Correctly label the speciation diagram below:$\mathrm{I}=\mathrm{PO}_{4}{ }^{3-}, \mathrm{II}=\mathrm{HPO}_{4}{ }^{2-}, \mathrm{III}=\mathrm{H}_{2} \mathrm{PO}_{4}{ ...

​​​​Consider the following figure of an activated sludge process (ASP), depicting the flow $(\mathbf{Q})$, substrate $(\mathbf{S})$, and microorganism concentration $(\ma...

​​Consider the following statementsSound pressure changes with distance from the sourceSound power is a property of the sourceSound intensity is sound power per unit volu...

​​​​​Choose the correct option(s) from the following regarding the solubility in waterWater is a polar molecule because of the asymmetric distribution of charge between t...

The following figure (not to scale) depicts a rainfall hyetograph for a storm over a catchmentIf the storm produced a direct runoff of $12.5 \: \mathrm{mm}$, then the $\p...

You conducted a batch experiment in the lab for $10$ minutes to degrade a toxic compound, which follows first order kinetics. The compound degrades from $2 \times 10^{-3}...

A particle dispersoid has $1510$ spherical particles of uniform density. An air purifier is proposed to be used to remove these particles. The diameter specific number of...

A street sweeping machine starts from point $P$ and ends at $S$, as shown in the network of streets below. It sweeps all the streets at least once.Length of the streets, ...

If ' $\rightarrow$ ' denotes increasing order of intensity, then the meaning of the words[sick $\rightarrow$ infirm $\rightarrow$ moribund] is analogous to [silly $\right...

Visualize two identical right circular cones such that one is inverted over the other and they share a common circular base. If a cutting plane passes through the vertice...

The $15$ parts of the given figure are to be painted such that no two adjacent parts with shared boundaries $\text{(excluding corners)}$ have the same color. The minimum ...

Hardness in water is NOT caused by$\mathrm{Ca}^{2+}$$\mathrm{Si}^{2+}$$\mathrm{Mg}^{2+}$$\mathrm{CO}_{3}^{2-}$

In the context of fluid flow, which of the following statement(s) is/are correct?Streamline is a line, tangent to which at any point gives the direction of the velocity v...

Which one is the solution $y(x)$ for the following ordinary differential equation and the specified boundary conditions?\[\frac{d^{2} y}{d x^{2}}-3 \frac{d y}{d x}+2 y=2 ...

A municipal solid waste digester generates $1000 \mathrm{~kg}$ of methane gas. The volume of the tank needed to store this gas at $30^{\circ} \mathrm{C}$ and 3 atmospheri...

Consider two horizontal layers of an aquifer as shown in figure. Each layer is isotropic and homogeneous. Flow is parallel to the stratification. Thickness and horizontal...

The ionic strength of a solution containing $0.01 \mathrm{M}$ of $\mathrm{CaCl}_{2}$ and $0.001 \mathrm{M}$ of $\mathrm{Na}_{2} \mathrm{SO}_{4}$ is _________ $\mathrm{M}$...

The $\mathrm{pH}$ of a solution containing $0.1 \mathrm{M}$ of acetic acid and $0.05 \mathrm{M}$ of sodium acetate is __________ $\text{(rounded off to $2$ decimal places...

In a cyclone separator of radius $25 \mathrm{~cm}$, a particle is travelling with a gas stream at velocity of $18 \mathrm{~m} / \mathrm{s}$. The ratio of centrifugal forc...