Questions by admin

$\lim _{x \rightarrow 0} \frac{x^{2}}{\sin x}=$$0$ $1$$2$$-1$

A tangent is drawn on the curve of the function $y=x^{2}$ at the point $(x, y)=(3,9)$. The slope of the tangent is$3$$6$$9$$12$

The table below shows the carbon content of four samples of powdered coal. If these four samples are mixed completely, what would be the resultant carbon percentage of th...

A sample of air is collected in the morning at an ambient temperature of $\mathbf{2 5}{ }^{\circ} \mathbf{C}$. The concentration of carbon monoxide $\text{(CO)}$ in this ...

In fluid statics, the line of action of the buoyant force always acts through the ___________.centre of gravity of any submerged bodycentroid of the volume of any floatin...

What is the order of preference of the various elements in integrated waste management hierarchy $\text{(highest preference to lowest preference)}$?Reduce $>$ Rcuse $>$ r...

If $d$ is the depth of an aquifer through which water is flowing, then the relationship between permeability $K$ and transmissibility $\text{(also known as transmissivity...

Which of the following causes $\text{'Type-I'}$ settling in a sedimentation tank? AgglomerationCompression Force of gravityCharge neutralization

Which of the following is the terminal electron acceptor in the electron transport chain of aerobic respiration?Water$\mathrm{NADH}$$\mathrm{O}_{2}$Cytochrome-c

In the context of noise pollution, SPL is the sound pressure level in decibels (dB). The relationship between SPL, the root mean square $\text{(rms)}$ sound pressure $p$ ...

The following block diagram highlights the typical phases of the life cycle of a product. In the figure, '$P$', '$Q$', and '$R$' represent various possible scopes of anal...

The United Nations Conference on Environment and Development was held in $1992$ in Rio de Janeiro, Brazil. During this conference, several environmental management princi...

Choose the correct order of biodegradability $\text{(highest to lowest)}$ of the following municipal solid waste components.Food waste $>$ Newspaper $>$ Polyvinyl Chlorid...

Chlorine is most effective as a water disinfectant at a $\text{pH}$ of _____________.$6$ $8$$10$$12$

In proximate analysis, when a $10 \mathrm{~kg}$ moisture-free solid sample is heated in a furnace at $950^{\circ} \mathrm{C}$ in the absence of air, its mass is reduced b...

The oxidation states of ' $\mathrm{N}$ ' in $\mathrm{NH}_{4}^{+}, \mathrm{NO}_{2}^{-}$, and $\mathrm{NO}$ are ________ respectively.$+2,-3$, and +3$-3,+3$, and +2$-3,+3$,...

Which of the following pairing of nucleotide bases is present in double helix DNA?Thymine - CytosineAdenine - ThymineCytosine - AdeninUracil - Thymine

What is the $\text{pH}$ of a water sample having $\mathrm{H}^{+}$ concentration of $10$ $\mathrm{mg} / \mathrm{L}$?The atomic weight of $\mathrm{H}$ is $1 \mathrm{~g} / ...

The ordinary differential equation\[\frac{d y}{d x}=x^{2} y\]has $y$ as the dependent variable and $x$ as the independent variable. Which of the following classification(...

Which of the following is/are both greenhouse gas(es) and ozone depleting substance(s)?$\text{CFC-11}$$\mathrm{CO}_{2}$$\text{HCFC-22}$$\mathrm{N}_{2} \mathrm{O}$