Recent questions tagged chemical-technology

The $DCDA$ (Double Contact Double Absorption) process is used for the manufacture of ureasulphuric acidnitric acidammonia

Match the equipment in Group-$1$ with the process in Group-$2$$\begin{array}{cc}\&\text{Group-$1$} & \text{Group-$2$} \\ &\text{P. Fluidized bed} & \text{ I. Paper-making...

Standard pipes of different schedule numbers and standard tubes of different $BWG$ numbers are available in the market. For a pipe/tube of a given nominal diameter, which...

India has no elemental sulphur deposits that can be economically exploited. In India, which one of the following industries produces elemental sulphur as a by-product?Co...

Two paper pulp plants $P$ and $Q$ use the same quality of bamboo as a raw material. The chemicals used in their digester are as follows:$$\begin{array}{clcIcI|cI|cI|c}\hl...

Match the industrial processes in $Group–I$ with the catalyst materials in $Group–2$.$\begin{array}{cc}\\ \\&\text{Group-1} & \text{Group-2} \\ &\text{P. Ethylene polyme...

Identify the $WRONG$ statement amongst the following:Steam distillation is used for mixtures that are immiscible with water.Vacuum distillation is used for mixtures that ...

Match the polymer mentioned on the left with the catalyst used for its manufacture given on the right.$\begin{array}{cc}\&\text{I. Low density Polyethylene} & \text{P. Zi...

Match the technologies in Group-$1$ with the entries in Group-$2$:$\begin{array}{cc}\&\text{$Group-1$} & \text{$Group-2$} \\ &\text{P. Urea manufacture} & \text{ I. Micro...

Match the chemicals written on the left with the raw materials required to produce them mentioned on the right.$\begin{array}{cc}\&\text{I. Single Superphosephate $(SSP)$...

A multi-stage, counter-current liquid-liquid extractor is used to separate solute $C$ from a binary mixture $(F)$ of $A$ and $C$ using solvent $B$. Pure solvent $B$ is re...

Select the $\text{WRONG}$ statement regarding water gas shift converters from the list below.Inter-stage cooling is provided between the two stages of shift converters Us...

Match the raw materials of Group-$1$ and $2$ with the final products of Group-$3$$$\begin{array}&&\textbf{Group 1} & \textbf{Group 2} & \textbf{Group 3} \\ &\text{P$_{1}$...

Determine the correctness or otherwise of the following Assertion $[a]$ and Reason $[r]$Assertion: Significant combustion of coke takes place only if it is heated at high...

A spherical ball of benzoic acid (diameter=$1.5\:cm$) is submerged in a pool of still water. The solubility and diffusively of benzoic acid in water are $0.03$ $k$mol/$m^...

Which $ONE$ of the following statements is $CORRECT$?The major components of biodiesel are triglyceridesBiodiesel is essentially a mixture of ethyl estersBiodiesel is hig...

Catalytic cracking isa hydrogen addition processa carbon rejection processan exothermic processa coking process

Decomposition efficiency ($\eta _{D}$) of an electrolytic cell used for producing $NaOH$ is defined as ​​​​​​$\eta _{D}$ = (grams of $NaOH$ produced / grams of $NaCl$ dec...

A spherical storage vessel is quarter-filled with toluene. The diameter of the vent at the top of the vessel is $1/20^{th}$ of the diameter of the vessel. Under the stead...

Steam economy of a multiple effect evaporator system is defined askilogram of steam used per hourkilogram of steam consumed in all the effects for each kilogram of steam ...

Match the reactant-product combination in Group 1 with the unit process in Group 2 Group 1 ...

Identify which of the following statements are FALSE.(P) Oils with an oleic radical (1 double bond) are more suitable than oils with a linolenic radical (3 double bonds) ...

A crosscurrent cascade of N ideal stages is used to treat a feed stream of molar flow rate E. The feed stream contains a solute which is to be recovered by a pure solvent...

In the manufacture of sulphuric acid by the contact process, the catalytic oxidation of SO$_2$ is carried out in multiple stages mainly toincrease the reaction rate by pr...

In the Tyler standard screen scale series, when the mesh number increase from 3 mesh to 10 mesh, thenthe clear opening decreasesthe clear opening increasethe clear openin...

Match the polymer in Group I to the polymer characteristic in Group II Group I ...

If the flow rate of B is 2400 kg/h, then the theoretical number of stages in the column, using Kremser’s equation (adjusted to the next integer) is591113

A counter-current extraction column is designed to remove 99% of solute C from a solution of solvent A and solute C using pure solvent B. The initial concentration of sol...

Match the process in Group I with the catalyst in Group II Group I ...

Consider the drying operation shown in the figure below for a solid loading (dry basis) of $50 \text{ kg/m}^{2}$ with a constant drying rate of $5\: \text{kg/m$^{2}$.h.}$...

The final boiling points of gasonline, diesel, atmospheric gas oil $\text{(AGO)}$ and lubricating oils vary as gasonline>diesel>$\text{AGO}$ lubricating oilslubricating o...

For absorption of $H_{2}S$ from a mixture with hydrocarbon vapour into an aqueous alkanolamine solution, the liquid phase mass transfer resistance issignificantly higher ...

In connection with petroleum refining, identify the incorrect statement among the following options.Desalting of crude oil is done before processing it in atmospheric dis...

The molecular formula of the predominant chemical compound in commercial sugar is$C_{12}H_{22}O_{11}$$C_{12}H_{24}O_{12}$$C_{6}H_{10}O_{5}$$C_{6}H_{12}O_{6}$

Polyvinyl chloride is produced byco-polymerizationaddition-type kineticsreacting chlorine with polyethylenereacting hydrochloric acid with polyethylene

Choose the correct statementIn viscose rayon manufacturing process,carbon disulphide used as reactant for xanthate formation is regenerated in a later stepcaustic soda us...