In extraction, as the temperature increases, the area of heterogeneity
(area covered by binodal curve)
(A) Decreases
(B) Increases
(C) Remains unchanged
(D) None of these
Description : In a counter-current extractor, as the axial mixing increases, the extraction efficiency (A) Increases (B) Decreases (C) Remains unchanged (D) Depends on the pressure of the system
Last Answer : (B) Decreases
Description : With increase in absolute humidity, the dew point of an unsaturated mixture of air and water vapor (at constant pressure and temperature). (A) Increases (B) Remains unchanged (C) Decreases (D) Decreases linearly
Last Answer : (A) Increases
Description : If the amount of the steam used in steam distillation is increased, the temperature of distillation (A) Increases (B) Decreases (C) Remains unchanged (D) Depends on relative volatility
Description : At a given equilibrium pressure, with increase in temperature, the concentration of adsorbed gas on solid adsorbent (A) Increases (B) Decreases (C) Remains unchanged (D) Increases exponentially
Description : With increase in temperature, the mutual solubility of two liquids (A) Increases (B) Decreases (C) Remains unchanged (D) Decreases exponentially
Description : With increase in temperature, the thermal conductivity of steel (A) Increases (B) Decreases (C) Remains unchanged (D) Increases exponentially
Description : For gases, the thermal conductivity increases with temperature rise. For liquids, with increase in concentration, its thermal conductivity generally (A) Decreases (B) Increases (C) Remains unchanged (D) Increases exponentially
Last Answer : (A) Decreases
Description : With the increase of temperature, the Col-burn jH factor (A) Increases (B) Decreases (C) Remains unchanged (D) May increase or decrease; depending on temperature
Description : Thermal conductivities of most of the liquids __________ with rise in temperature. (A) Increases (B) Decreases (C) Remains unchanged (D) May increase or decrease; depends on the liquid
Description : With increase in temperature, the thermal conductivity of fresh lubricating oil (A) Increases (B) Decreases (C) Remains unchanged (D) May increase or decrease; depends on its composition
Description : Thermal conductivity of a gas at low density, __________ with increase in temperature. (A) Decreases (B) Increases (C) Remains unchanged (D) May increase or decrease; depends on the gas
Last Answer : (B) Increases
Description : Fractional conversion __________ for an exothermic reversible chemical reaction, when the temperature is maximum. (A) Increases (B) Remains unchanged (C) Decreases (D) Unpredictable from the data
Last Answer : (C) Decreases
Description : With increase in temperature, the internal energy of a substance (A) Increases (B) Decreases (C) Remains unchanged (D) May increase or decrease; depends on the substance
Description : With increase in temperature, the atomic heat capacities of all solid elements (A) Increases (B) Decreases (C) Remains unchanged (D) Decreases linearly
Description : At a given temperature, the volume of a gas dissolved in a solvent __________ with increase in pressure. (A) Increases (B) Decreases (C) Remains unchanged (D) May increase or decrease; depends on the gas
Last Answer : C) Remains unchanged
Description : During electrical desalting of crude oil, the electrical conductivity of a mixture of crude oil and water (which ranges between 3 to 8% water) __________ with increase in the amount of water. (A) Decreases (B) Increases (C) Remains unchanged (D) Decreases linearly
Description : Production rate __________ with increased fineness, with a given energy input to the size reduction machine. (A) Decreases (B) Increases (C) Remains unchanged (D) May increase or decrease; depends on the machine
Description : With increase in the capacity of screens, the screen effectiveness (A) Remains unchanged (B) Increases (C) Decreases (D) Decreases exponentially
Description : As the impurities are oxidised, the melting point of iron (A) Decreases (B) Remains unchanged (C) Increases (D) May increase or decrease; unpredictable
Last Answer : (C) Increases
Description : With increase in the concentration of the adsorbate, the integral heat of adsorption (A) Increases (B) Decreases (C) Remains unchanged (D) May increase or decrease; depends on the type of adsorbate
Description : The boiling points of pure components of a binary system __________ with increase in total pressure of the system. (A) Decreases (B) Increases (C) Remains unchanged (D) May increase or decrease, depends on the system
Description : With increase in the liquid flow rate at a fixed gas velocity in a randomly packed counter current gas-liquid absorption column, the gas pressure drop (A) Decreases (B) Remains unchanged (C) Increases (D) Decreases exponentially
Description : If the baffle spacing in a shell and tube heat exchanger increases, then the Reynolds number of the shell side fluid (A) Remains unchanged (B) Increases (C) Increases or decreases depending on number of shell passes (D) Decreases
Last Answer : (D) Decreases
Description : With increase in porosity, the thermal conductivity of a solid substance (A) Increases (B) Decreases (C) Remains unchanged (D) May increase or decrease; depends on the solid
Description : If the discharge of a centrifugal pump is throttled, then its suction lift (A) Increases (B) Decreases (C) Remains unchanged (D) Data insufficient to predict
Description : With increase in the ratio of orifice diameter to pipe diameter, the fraction of the orifice pressure differential that is permanently lost (A) Increases (B) Decreases (C) Remains unchanged (D) Increases exponentially
Description : Fractional conversion __________ with increase in pressure for ammonia synthesis reaction i.e., N2 + 3H2 ⇌ 2NH3 . (A) Increases (B) Decreases (C) Remains unchanged (D) Unpredictable from the data
Description : Bulk diffusion in catalyst pore __________ with increase in pressure. (A) Increases (B) Decreases (C) Remains unchanged (D) Increases exponentially
Description : The melting point of paraffin wax (which contracts on solidification) __________ with pressure rise. (A) Increases (B) Decreases (C) Remains unchanged (D) Decreases linearly
Description : With increase in pressure (above atmospheric pressure), the Cp of a gas (A) Increases (B) Decreases (C) Remains unchanged (D) First decreases and then increases
Description : If we increase the pressure on a substance (which is at its triple point), then the triple point (A) Increases (B) Decreases (C) Remains unchanged (D) May increase or decrease; depends on the substance
Last Answer : (C) Remains unchanged
Description : For an isothermal process, the internal energy of a gas (A) Increases (B) Decreases (C) Remains unchanged (D) Data insufficient, can't be predicted
Description : Other things remaining the same, when a consumer's income increases, his equilibrium point moves to A.A higher indifference curve B.To the left-hand side on the same indifference curve C.Remains unchanged on the same indifference curve D.A lower indifference curve
Last Answer : A.A higher indifference curve
Description : The rating of the Transformer __ when the supply frequency is increased: a) Remains unchanged b) Increases c) Decreases d) None of the above
Last Answer : Ans: B
Description : As the amount of clay in a soil increases, its water retaining capacity _____ 30 A. Increases B. Decreases C. Remains unchanged D. None of Above
Last Answer : ANSWER: A
Description : With increasing bond order, stability of a bond (a) Decreases (b) Increases (c) Remains unchanged (d) None of these
Last Answer : Ans:(b)
Description : In the periodic table of elements, on moving from left to right across a period, the atomic radius – (1) decreases (2) increases (3) remains unchanged (4) does not follow a definite pattern
Last Answer : (1) decreases Explanation: The atomic radius is the distance from the atomic nucleus to the outermost stable electron orbital in an atom that is at equilibrium. It tends to decrease across a period from ... usually increases while going down a group due to the addition of a new energy level (shell).
Description : If the centre distance of the mating gears having involute teeth is varied within limits, the velocity ratio (A) Increases (B) Decreases (C) Remains unchanged (D) None of these
Description : In a consolidated drained test on a normally consolidated clay, the volume of the soil sample during shear (A) Decreases (B) Increases (C) Remains unchanged (D) First increases and then decreases
Description : If the weight of an aircraft is increased the maximum gliding range: a. Decreases b. Increases c. Remains the same, and rate of descent is unchanged d. Remains the same, but rate of descent increases
Last Answer : d. Remains the same, but rate of descent increases
Description : A source produces sound waves under water. Waves travel through water and then into air. Which of the following statements about the frequency (f) and the wavelength () is correct and sound passes from ... increases. (3) remains unchanged but f decreases. (4) remains unchanged but f increases.
Last Answer : 3) remains unchanged but f decreases.
Description : In the periodic table of elements, on moving from left to right across a period, the atomic radius (1) decreases (2) increases (3) remains unchanged (4) does not follow a definite pattern
Last Answer : increases
Description : If the demand for an item is trebled and the order cost is reduced to one third, then the economic order quantity (A) Is trebled (B) Remains unchanged (C) Decreases by a factor of 3 (D) Decreases by a factor of 1/3
Last Answer : (B) Remains unchanged
Description : The elasticity of a demand curve with a constant slope (a) Increases at higher price ; (b) Decreases at higher price; (c) Increases at lower price ; (d) Remains constant
Last Answer : (a) Increases at higher price ;
Description : With increase in temperature, the rate of extraction in leaching (solidliquid extraction system). (A) Increases (B) Decreases (C) Remain unaffected (D) Increases Linearly
Description : Pick out the wrong statement pertaining to solvent extraction of oil. Rate of extraction (A) Decreases with decrease of thickness of the flakes (B) Increases with the increasing flake size ... considerably with the rise of temperature (D) Decreases as the moisture content of flakes increases
Last Answer : (D) Decreases as the moisture content of flakes increases
Description : Under progressive taxation, the real value of tax on a given level of real income : (a) decreases under inflation (b) rises under depression (c) rises under inflation (d) remains unchanged under inflation
Last Answer : (c) rises under inflation
Description : Air at a particular humidity is heated in a furnace. The new dew point (A) Decreases (B) Increases (C) Depends on the extent of heating (D) Remain unchanged
Description : When price of a substitute of commodity falls, the demand for - (1) falls (2) remains unchanged (3) increases at increasing rate (4) rises
Last Answer : (1) falls Explanation: Cross Price Effect refers to effect on the demand for a given commodity due to a change in the price of a substitute commodity. A change (increase or decrease) in the ... the given commodity (tea) also decreases. It shifts the demand curve of the given commodity towards left.