Recent questions

The maximum coordination number of $\mathrm{Sn}^{4+}$ is$4$8$6$2$

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

Ten cards in a pack are numbered as $1,2,3, \ldots 10$. The probability of drawing a card with an even number or a number which is a multiple of 5 from the pack is$4 / 10...

The processes of removal of particles in a rapid sand filter with their description is given in the table.ProcessDescription$\text{(i)}$ StrainingP:Removes only particles...

Crown corrosion of reinforced cement concrete sewer is caused by ___________.sulfur oxidizing bacteriairon oxidizing bacteriadenitrifying bacteriafermentative bacteria

Which one of the following conversions belongs to nonsymbiotic nitrogen fixation?Atmospheric nitrogen to ammonia by Rhizobium bacteria in nodules attached to roots of leg...

Tuberculosis is predominantly caused by __________.Entamoeba histolyticSalmonella typhiMycobacterium bovisBacillus cereus

Rod shaped bacterial cells are called ________.BacilliCocciSpirillaDiplococci

The costliest functional element in an urban centralized Municipal Solid Waste management infrastructure for a typical Indian Tier $\text{I}$ city is _______.biological t...

As per the United Nations Environmental Program (UNEP) guidelines 2004, the maximum size of microplastics is __________.$10 \mathrm{~mm}$$5 \mathrm{~mm}$$10 \mu \mathrm{m...

Which one of the following is NOT a greenhouse gas?$\mathrm{CO}_{2}$$\mathrm{CH}_{4}$$\mathrm{H}_{2} \mathrm{~S}$$\mathrm{H}_{2} \mathrm{O}$

As per the United Nations agenda for sustainable development adopted in September $2015$, the number of Sustainable Development Goals (SDGs) are _________ and the propose...

The environmental temperature increases by $6^{\circ} \mathrm{C} / \mathrm{km}$ with height at a particular location. The stability condition of the atmosphere at the loc...

In a rectangular open channel, the flow is critical, and the flow depth is $2 \mathrm{~m}$. Select the correct statement(s)Specific energy for the flow is $3.0 \mathrm{~m...

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...

If $\mathbf{X}$ is a vector, and $\mathbf{A}$ and $\mathbf{B}$ are linear operators; then the correct mathematical relationship(s) is/are$(\mathbf{A}+\mathbf{B}) \mathbf{...

The eigen values of the matrix $\left[\begin{array}{ll}4 & 3 \\ 3 & 4\end{array}\right]$ are$1$$2$$7$$4$

Consider the equation $\frac{d y}{d x}-x^{2}+e^{x}=0$; with $y=1$ at $x=0$.The value of $y$ at $x=1$ is ________ $\text{(rounded off to 2 decimal places)}$.Take the value...

$f(x)=x^{3}-4.5 x^{2}-12 x$ has a local maximum at $x=$ __________ $\text{(an integer value)}$ in the range $x=-2$ to $+2$.

As per the Hazardous Waste $\text{(Management and Handling)}$ Rules, $2016$, of India, which is/are the characteristic(s) that must be exhibited by a waste to be classifi...