List of top Questions asked in CUET (PG)

Please choose correct option
A. Top and bottom product contain non-key components.
B. Minimum reflux ratio is determined using Underwood equation.
C. Throughout the column relative volatility is constant.
D. Separation is defined by heavy and light components.
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Please choose correct answer
A. At high temperature radiation is significant.
B. Heat transfer due to radiation is reduced by shield.
C. Flow regime is predicted by Reynold number.
D. No impact of temperature on total heat transfer coefficient.
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Please choose correct option.
A. Cellulose is not digested by human.
B. Reaction equilibrium is shifted by enzymes.
C. Aerobic conditions are responsible for TCA cycle.
D. Branched polymer chain of glucose in plants is glycogen.
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For a chemical reaction A $\rightleftharpoons$ B, the necessary conditions for the state of equilibrium is/are,
A. \(C_{A}=C_{B}\)
B. \(\mu_{A}=\mu_{B}\)
C. \(P_{A}=P_{B}\)
D. \(G_{A}=G_{B}\)
E. \(H_{A}=H_{B}\)
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The cross linked polyethylene have better/higher properties than poly ethylene.
A. Heat resistant
B. Solubility
C. Tg
D. Processibity
E. Impact strength
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Arrange the following based on their calorific value per kg of fuel.
A. Wood Char Coal
B. Dry Cow Dung
C. Kerosene
D. Natural gas
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Arrange the following temperature terms with reference to water/water vapor:
A. Dry-bulb temperature $(T_{D})$
B. Boiling temperature $(T_{B})$
C. Dew temperature $(T_{DW})$
D. Wet bulb temperature ($T_W$)
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Different types of waste used in construction material
A. Red mud
B. Ash of rice husk
C. Activated Carbon
D. Fly ash
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Arrange the following based on the particle size that are separated out from a solution.
A. Ultrafiltration
B. Sedimentation
C. Filter paper (Whatman 40)
D. Press filtration
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Arrange the following based on enthalpy content at $100^{\circ}C$ per kg of water.
A. Saturated vapor
B. Superheated vapor
C. Vapor with 95% quality
D. Enthalpy of vaporization
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Arrange the NR (Natural Rubber) modulus properties in descending order with same dose of cross linkers:
A. Vulcanized NR with 30 phr Carbon black (HAF)
B. Vulcanized NR with 10 phr Plasticizer (DOP)
C. Vulcanized NR
D. Vulcanized NR with 10 phr DOP and 30 phr HAF.
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During batch distillation composition change occurs.
A. Heavy component increases in still
B. Distillate formed from condensation of vapor
C. Vapor formation occurs in still
D. As time passes composition of distillate decreases
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Given below are two statements: one is labelled as Assertion A and the other is labelled as Reason R
Assertion A: The FTIR spectrum of a compound is generally used to identify the functional groups present in it.
Reason R: As each functional groups have different elements and chemical-bonds as compared to main elements present in it.
In the light of the above statements, choose the most appropriate answer from the options given below:

Enzyme regulation by feedback inhibition.
A. Reduced enzyme activity.
B. Accumulation of end product.
C. End product bind to allosteric site.
D. Decrease in intermediate formation.
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Please arrange the following according to escalating Mach number.
A. Supersonic
B. Transonic
C. Hypersonic
D. Subsonic
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Lubricating oil, which has been used is re-refined as per sets mentioned below.
A. Removal of impurities and dehydration.
B. Blending and product finishing.
C. Segregation and collection.
D. Base oil recovery and distillation.
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How does heat transfer enhance due to turbulence?
A. Decrease in thermal resistance.
B. Increase in convective coefficient.
C. Mixing is induced by velocity change.
D. Thinning of boundary layer.
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Assertion A: An increase of temperature of a chemical reaction at constant pressure, the equilibrium value of the reaction shifts in the direction in which the heat of reaction absorbed.
Reason R: To minimize the Gibbs free energy change due to increase in temperature, the heat of reaction needs to be absorbed by shifting the equilibrium value.
In the light of the above statements, choose the most appropriate answer:

Assertion A: Below glass transition temperature polymers behave as a glass and above glass transition temperature polymers behave as an elastomer.
Reason R: Below glass transition temperature polymer chain becomes rigid and behaves like a glass; above glass transition temperature polymer chain segments becomes flexible as a result polymers behave like elastomer.
In the light of the above statements, choose the most appropriate answer:

Assertion A: PVC is a thermoplastic.
Reason R: Plasticizers are used to make PVC flexible.
In the light of the above statements, choose the most appropriate answer:

Assertion A: The ductility of metals is affected by dislocations of atomic structure, it increases the ductility of metals.
Reason R: Dislocations mostly occur at the lower stress than the predicted shear strength.
In the light of the above statements, choose the most appropriate answer:

Assertion A: The physical properties and fluid velocity of the system influences the mass transfer coefficient.
Reason R: Flow condition impact the boundary layer thickness which controls the convective mass transfer.
In the light of the above statements, choose the most appropriate answer:

Given below are two statements: one is labelled as Assertion A and the other is labelled as Reason R
Assertion A: Liquid fuels have higher calorific value than solid fuels.
Reason R: Solid fuels ignite at lower temperature than liquid fuels.
In the light of the above statements, choose the most appropriate answer from the options given below:

Assertion A: Bingham plastic fluid shows solid characteristics when stress applied is low.
Reason R: Before beginning of flow Bingham plastic fluid have finite yield stress.
In the light of the above statements, choose the most appropriate answer:

Write down the product compound for the following reaction: