Recent questions in Food Technology

A vertical jet of diameter $d_{1}$ strikes a horizontal plate with a velocity $U$, as shown in the figure. The plate has a hole of diameter $d_{2}(<d_{1})$ concentric to ...

Which of the following statements is/are applicable to Fick's second law:Concentration changes with timeSteady state condition prevailsDiffusion is time dependentConcentr...

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

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...

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...

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...

At $873 \: \mathrm{K}$ , hydrogen diffuses under steady state condition through a $5\: \mathrm{mm}$ thick palladium sheet with a cross-sectional area of $0.3 \mathrm{~m}^...

​​​​​Which of the following contains the phytonutrient allicin?GrapeCauliflowerGarlicChilli

​​​​​Which genus of bacteria does $\textsf{NOT}$ have cell wall?LactobacillusStaphylococcusMycoplasmaEscherichia

​​​Which of the following pigment does $\textsf{NOT}$ have pro-vitamin A activity?$\beta$-Carotene$\beta$-CryptoxanthinLycopene$\alpha$-Carotene

​​​​If there is a delay in oil extraction after bran is separated from the brown rice, the quality of rice bran oil deteriorates. Identify the suitable $\textsf{CAUSE}$ a...

​​​​​Among the following, which is/are the process(es) that lead to generation of new fats from existing ones?TransesterificationDegummingHydrogenationWinterization

Potato slices weighing $50 \: \mathrm{kg}$ is dried from $60 \%$ moisture content (wet basis) to $5 \%$ moisture content (dry basis). The amount of dried potato slices ob...

​​​​Which of the following sequence of events occurs during formation of egg-white gel?Assume: $\mathrm{P}_{\mathrm{N}}$: Native protein; $\mathrm{P}_{\mathrm{D}}$: Denat...

​​​In canning and retorting of foods, which of the following is the correct expression of Ball process time $(\mathrm{B})?$Assume: $\mathrm{t}_{\mathrm{p}}=$ processor's ...

​​​​Identify the $\textsf{CORRECT}$ sequence of operations for dressing of poultry.Slaughtering and bleeding $\rightarrow$ scalding $\rightarrow$ defeathering $\rightarro...

​​​​Which of the following statement(s) is/are $\textsf{TRUE}$ for a package of gamma-irradiated ($7.5 \: \mathrm{kGy}$) whole chicken?Nutritional quality of the product ...

​​​​Match the following food products in $\text{Column I}$ with their corresponding processes in $\text{Column II}$.$$\begin{array}{|l|l|l|l|} \hline & \textbf{Column I} ...

​​Which of the following is/are inhibitor(s) of enzymatic browning in peeled potatoes?Citric acidEDTAMannitolAscorbic acid

​​​​Match the following enzymes in $\textbf{Column I}$ with their applications in $\textbf{Column II}$.$$\begin{array}{|l|l|l|l|} \hline & \textbf{Column I} & & \textbf{C...

The $\text{F}_{121}$ value of a known microorganism with $\text{Z}$ value of $11^{\circ} \mathrm{C}$ is $2.4 \: \mathrm{min}$ for $99.9999 \%$ inactivation. For a $12\tex...

A fruit juice is concentrated using an ultrafiltration membrane. A feed stream at $10 \mathrm{~kg} / \mathrm{min}$ with $6 \%$ total solids (by weight) is increased to $2...

In a typical grinding operation, $80 \%$ of the feed material passes through a sieve opening of $4.75 \: \mathrm{mm}$; whereas, $80 \%$ of the ground product passes throu...

In hot weather, a human body cools by the evaporation of sweat from its skin. The amount of water that must evaporate to cool the body by $1^{\circ} \mathrm{C}$ is $\_\_\...

A circular water jet of diameter $50$ mm impinges with a velocity of $18 \mathrm{~m} / \mathrm{s}$ normal to a plate. The density of water is $1000 \mathrm{~kg} / \mathrm...

A $2$ mm thick palladium sheet of $1000 \mathrm{~mm}^{2}$ cross section is used as a diffusional membrane to purify hydrogen. The hydrogen concentration is maintained at ...

$100$ moles of moist air at $70 \%$ relative humidity is cooled from $70^{\circ} \mathrm{C}$ to $50^{\circ} \mathrm{C}$ at a constant pressure of $1$ bar . The vapour pre...