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NEET Important Questions- Free PDF Download
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NEET AND GPAT IMPORTANT QUESTIONS AND ANSWERS
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1. Following uses the evaporation technique to achieve supersaturation:
(a) Circulation magma crystallizer
(b) Sternson–Walker crystallizer
(c) Static tank crystallizer
(d) All
ANS:- A
2. McCabe and Thiele method represents
(a) Graphical method for determining the number of theoretical plates of a fractionating column
(b) Graphical relation between vapour pressure and temperature of component liquids of a mixture
(c) Relationship between the vapour pressure and mole fraction of component of a mixture
(d) None
ANS:- A
3. Florentine receiver works on the principle of separa- tion of component liquids of a mixture based on
(a) Molecular weight difference
(b) Density difference
(c) Volume difference
(d) All
ANS:- B
4. Following is not true for an azeotropic mixture
(a) Volatility of each component becomes equal
(b) Relative volatility of mixture is 1
(c) Components of such mixture cannot be fractionated
(d) None
ANS:- D
5. Following is most widely used for extraction of vola- tile oils
(a) Steam distillation
(b) Azeotropic distillation
(c) Molecular distillation
(d) Destructive distillation
ANS:- A
6. Following are used for particle size analysis
P. Coulter counter
Q. BET N2 adsorption
R. XRPD
S. HIAC counter
(a) Q and S
(b) P and S
(c) Q, R and S
(d) R and S
ANS:- B
7. Which instrument is used for the determination of shear rate/shear stress?
(a) Ultrasonifier
(b) Rotational viscometer
(c) Accela cota
(d) Chilsonator
ANS:- B
8. Colloid particles have …………………. type of rheology.
(a) Newtonian flow
(b) Pseudoplastic flow
(c) Non-Newtonian flow
(d) Dilatant
ANS:- C
9. Wetting agent has ………………… HLB value.
(a) 1 to 3
(b) 3 to 6
(c) 7 to 9
(d) 8 to 18
ANS:- C
10. Carr’s compressibility index gives an idea about
(a) Flow property of powders
(b) Cohesiveness of powders
(c) Both
(d) None
ANS:- C