Recent questions

Select the correct option to match the Polymer to its most suitable Monomer(s) from the table given below:PolymerMonomer(s)$\text{P}$Poly($p$-phenylene sulfide)$\text{I}$...

Select the correct option to match the Compound/Additive to its most suitable Function from the table given below:Compound/AdditiveFunction$\text{P}$Azocarbonamide$\text{...

The variation of steady shear viscosity $(\eta)$ of a polymer melt with shear rate $(\dot{\gamma})$ is shown in the figure, where $\dot{\gamma}_{s}$ is the upper limit of...

Select the correct option to match the Initiator(s) with the Method of polymerization from the table given below:Initiator(s)Method of polymerization$\text{P}$$\mathrm{BF...

Select the correct option to match the Characterization technique with the Information that is obtained using these techniques.Characterization techniqueInformation$\text...

Which of the following options is/are used to plasticize poly(vinyl chloride) (PVC)?Addition of vinyl acetate comonomer during the synthesis of PVCChlorination of PVCAddi...

A certain amount of plasticizer with a glass transition temperature $\left(T_{g}\right)$ of $-50^{\circ} \mathrm{C}$ was added to a polymer to reduce its $T_{g}$ from $70...

A rectangular plastic specimen with a cross-sectional area of $240 \mathrm{~mm}^{2}$ is subjected to tension with a force of $15000$ $\mathrm{N}$ resulting in elastic def...

Equimolar mixture of terephthalic acid and butylene glycol was taken to synthesize a polyester. The reaction was stopped at $99.6 \%$ conversion of the acid monomer. The ...

A viscoelastic polymer is subjected to a constant strain of $0.3$. The behaviour of the polymer follows Maxwell model of linear viscoelasticity. Elastic modulus of the po...

A single-screw extruder is operated at $12$ $\mathrm{rpm}$ under open discharge condition (i.e., without a die).The screw has a diameter of $10$ $\mathrm{cm}$, a distance...

Ergotism is caused by ingestion of grains infected withClostridium perfringensRhizopus stoloniferLactococcus lactisClaviceps purpurea

Match the bacteria in Column I with their respective characteristic features in Column II.$$\begin{array}{|ll|ll|} \hline & \textbf{Column I} & & \textbf{Column II} \\ \h...

Carmine, a food colorant, is derived fromCurcuma longaDactylopius coccusBeta vulgarisMonascus purpureus

Which one of the following carbohydrates is NOT a storage polysaccharide?StarchGlycogenChitinDextran

Which one of the following statements is true for a high-pressure homogenizer?Homogenization takes place only due to uniform mixing of solid and liquidSolid particles in ...

Coconut oil contains a small fraction of unsaturated fatty acids, but still has a low melting point due to the presence oflarge amounts of long chain saturated fatty acid...

Which of the following amines, produced as a result of protein degradation, is/are foul smelling?HistamineCadaverineTyraminePutrescine

Water is flowing at $100$ $\mathrm{litres}/ \mathrm{min}$ through a pipe with a diameter of $5$ $\mathrm{cm}$. Assume the coefficient of viscosity of water to be $0.001$ ...

A wet solid, fed to a dryer at a rate of $5 \mathrm{~kg} / \mathrm{s}$, is dried using hot air. In this process its moisture content is reduced from $25 \%$ to $15 \%$. T...

Match the toxins in Column I with their respective sources in Column II.$$\begin{array}{|ll|ll|}\hline & \textbf{Column I} && \textbf{Column II} \\ \hline P.& \text{Aflat...

Match the vitamins in Column I with their respective coenzyme forms listed in Column II.$$\begin{array}{|ll|ll|} \hline & \textbf{Column I} & & \textbf{Column II} \\ \hli...

Which one of the following proteins brings about the coagulation of milk in the stomach of calves?RenninAlpha-lactalbuminBeta-lactoglobulinLactoferrin

Match the class of additives used for food preservation listed in Column I with their specific examples in Column II.$$\begin{array}{|ll|ll|} \hline & \textbf{Column I} &...

Match the food items listed in Column I with their respective flavoring agents in Column II.$$\begin{array}{|ll|ll|} \hline & \textbf{Column I} & & \textbf{Column II} \\ ...

Vegetable oils resist oxidation and maintain their quality for a long period due to the presence oftocopherolshydrolytic enzyme such as lipasesmicroorganisms such as mold...

For a given temperature difference between the top and bottom surfaces of a flat metal plate, Fourier's law of heat conduction implies thattemperature gradient increases ...

Xylooligosaccharides can be produced byhydrolytic degradation of xylan by hydrochloric acidhydrolysis of starchenzymatic hydrolysis of lactoseenzymatic hydrolysis of xyla...

In a $\alpha$-helix, the $\text{R}$-groups on the amino acid residuesare found on the outside of the helixparticipate in the backbone $\text{H}$-bonding that stabilize th...

During constant pressure cake filteration, for an incompressible cake deposited uniformly over a constant filter surface area,the cake resistance remains constantthe cake...

Hot fluid is being cooled in a countercurrent, double-pipe heat exchanger from $410$ $\mathrm{K}$ to $340$ $\mathrm{K}$ by chilled water entering at $290$ $\mathrm{K}$ an...

A cold-storage room has a double-layered wall. The inner layer is $10$ $\mathrm{cm}$ thick, made of fiber insulation board $(\text{k} = 0.048 \text{W m}^{-1} \text{K}^{-1...

A tubular centrifuge separates $5$ micron particles of density $1500 \mathrm{~kg/m}^{3}$ from a slurry. The slurry is fed at a volumetric flow rate of $0.5 \mathrm{~m}^{3...

Which of the following is TRUE for the 'Summer solistice' in the Northern Hemisphere?Longest night of the yearEqual duration of daylight and nightLongest duration of dayl...

Which of the following options are parts of the atmospheric boundary layer?Benthic boundary layer, Internal boundary layerMixed layer, Entrainment layerMixed layer, Inter...

What is the approximate value of annual-mean pH of seawater at the surface in the northern Indian Ocean?$4.5$$5.0$$8.0$$11.0$

Which of the following weather systems has the shortest duration of lifecycle?Tropical CyclonesThunderstormsWestern DisturbanceWinter Monsoon

Which of the following statements based on the given figure is / are TRUE with respect to the upwelling process in the ocean?Wind is northerly.Wind is southerly.Event occ...

In a stable atmosphere, the change in pressure (in kilo Pascal) at a height of $100 \mathrm{~m}$ from the mean sea level is $\_\_\_\_$. (rounded off to three decimal plac...

If $20$ wave crests pass a fixed point in an interval of $5$ minutes, then the frequency of the wave (in Hertz) is $\_\_\_\_$. (rounded off to three decimal places)