Recent questions and answers

A line of symmetry is defined as a line that divides a figure into two parts in a way such that each part is a mirror image of the other part about that line.The given fi...

​​​​Correctly match the following Product classes with their representative Products.Product classProductP. Biofuel1. CellulaseQ. Bioplastic2. CephalosporinR. Industrial ...

​​​​Which of the following fluids exhibit(s) non-Newtonian behaviour at $25^{\circ} \mathrm{C}$ ?ToothpasteMercuryBrineBlood plasma

E. coli is inoculated in a shake flask containing nutrient rich medium. The initial number of viable cells in the medium is $10^2$. After few hours, the number of viable ...

Match the disease (Column I) with its biological vector (Column II).\begin{array}{|c|c|c|}\hline \text{Column I} & \text{Column II} \\\hline P. \text{Chagas disease} & ...

If the rate at which E. coli divides is $0.5 \mathrm{~h}^{-1}$, then its doubling time is $\_\_\_\_\_\_\_$ $\text{h}$.

Which one of the following bacteriophages has a genome composed of single stranded circular DNA?$\emptyset \text{X} 174$$\lambda$$\text{T}5$$\text{P}1$

The relationship that involves the exchange of nutrients between two different species for their mutual growth is called $\_\_\_\_\_\_\_\_$antagonismcommensalismparasitis...

​​​Correctly match the Microorganisms with their respective Nutrition and energy requirement.\[\begin{array}{|l|}\hline\begin{array}{l|l}\textbf{Microorganisms} & \textbf...

​​​Let $y(t)$ be a bacterial population whose growth is given by$$ \frac{d y}{d t}=\lambda(y+2) $$where $\lambda$ is the growth rate constant. If $y(0)=1$ and $y(1)=4$, t...

If the doubling time of a bacterial population is $3$ hours, then its average specific growth rate during this period is $\_\_\_\_\_$ $\mathrm{h}^{-1}$.(Round off to two ...

​​​​​Corynebacterium diphtheriae causes diphtheria in humans, only when this bacterium is infected byphage $\beta$epsilon phage$T4$ phagelambda phage

​​​​​Koch's postulate was established by Robert Koch while working on a disease caused byMycobacterium tuberculosisBacillus anthracisStreptococcus pneumoniaeBacillus subt...

The correct sequence of events during bacteriophage infection of a bacterial cell islanding $\rightarrow$ attachment $\rightarrow$ tail contraction $\rightarrow$ penetrat...

The allele associated with albinism in humans is recessive $(c)$. The probability that an albino male $(cc)$ and a carrier female ( $C c$ ) will have an offspring with no...

Let $\overrightarrow{O R}$ be the vector that is perpendicular to the vectors $\overrightarrow{O P}=2 \hat{\imath}-3 \hat{\jmath}+\hat{k}$ and $\overrightarrow{O Q}=-2 \h...

If $\vec{v}=\left(\begin{array}{l}2 \\ 2 \\ 2\end{array}\right)$ is an eigenvector of the matrix $\left(\begin{array}{lll}1 & 2 & 3 \\ 1 & 2 & 3 \\ 1 & 2 & 3\end{array}\r...

A binary mixture of benzene and toluene under vapour-liquid equilibrium at $80^{\circ} \mathrm{C}$ follows ideal Raoult's law. At this condition, the saturation pressures...

The determinant of the matrix $\begin{pmatrix} 4 & -6 \\ -3 & 2 \end{pmatrix}$ is _________

​​​​​Is there any good show $\_\_\_\_\_$ television tonight?Select the most appropriate option to complete the above sentence.inatwithinon

Which one of the following is an insect cell line?$\text{HEK} 293$$\text{Sf}9$$\text{DH}5$ $\alpha$ $\text{CHO}$

Terpenoids are made of _________ units.amino acidcarbohydrateisoprenetriacylglycerol

​​​​​Correctly match the following Monosaccharides with their respective Epimers. Monosaccharide EpimerP.$D$- mannose1.$C-3$ epimer of $D$-glucoseQ.$D$-allose2.$C-4$ epim...

An industrial fermentor containing $10,000\:L$ of medium needs to be sterilized. The initial spore concentration in the medium is $10^{6}$ spores $mL^{-1}$. The desired ...

Which one of the following statements is correct about Reynolds Number $\left(N_{R e}\right)$ in a stirred tank bioreactor?$N_{R e}$ is independent of the viscosity of th...

Fermentation medium is cooled from $121^{\circ} \mathrm{C}$ to $30{ }^{\circ} \mathrm{C}$ in a double pipe heat exchanger. If cold water is flowing in the counter-current...

For a double-pipe heat exchanger, the inside and outside heat transfer coefficients are $100$ and $200 \; \text{W m}^{-2} \text{K}^{-1},$ respectively. The thickness and ...

A $2 \: \mathrm{L}$ bioreactor is being operated as a chemostat, at a flow rate of $0.8 \: \mathrm{~L} / \mathrm{h}$ and sterile feed of $10 \: \mathrm{~g} / \mathrm{L}$ ...

A hot, freshly-sterilised fermentation medium is cooled in a double-pipe heat-exchanger. The medium enters the inner pipe of the exchanger at $95^{\circ} \mathrm{C}$ and ...

​​​​An enzyme immobilised in a porous spherical pellet, catalyses a strongly mass-transfer limited first-order reaction. The effectiveness factor for the immobilised enzy...

​​​​For a specific bioreactor configuration, the power requirement for a Rushton-turbine impeller agitating an unaerated Newtonian fluid in the turbulent regime will bepr...

The number of coins of ₹ $1$, ₹ $5$, and ₹ $10$ denominations that a person has are in the ratio $5: 3: 13$. Of the total amount, the percentage of money in ₹ $5$ coins i...

If two distinct non-zero real variables $x$ and $y$ are such that $(x+y)$ is proportional to $(x-y)$ then the value of $\frac{x}{y}$depends on $x y$depends only on $x$ an...

Prior exposure of plants to pathogens is known to increase resistance to future pathogen attacks.This phenomenon is known assystemic acquired resistancehypersensitive res...