NEET Questions and Answers Free PDF

NEET Important Questions- Free PDF Download

Things You Need to Know About NEET Important Questions 2021!

Any student aspiring to become a doctor needs to appear for the NEET examination as he/she can get admission to the medical college as per the ranks. It is crucial to know about the questions of NEET as most students fail to crack the exam due to the lack of knowledge. To get a grasp of the question paper easily, hence we the team live learns help you that one should go through the whole syllabus of the exam and note down the chapters covered for each subject in the examination. Students can also download the sample question papers and start solving them. It can be the best way for one to check the pattern.

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

1. Following is not a derived property of powder:

(a) Surface area 

(b) Particle size

(c) Bulk density 

(d) None

ANS:- C

2. Following is not the method for determining the surface area of particles:

(a) Adsorption method

(b) Mercury displacement method

(c) BET method

(d) Air permeability method

ANS:-D

3. Following is related to the air permeability method:

(a) Kozeny Carman equation

(b) BET equation

(c) Kelvin equation

(d) Stocks’ equation

ANS:-A

4. Kelvin equation is related to the

(a) Particle size analysis

(b) Pore size analysis

(c) Surface area analysis

(d) Sedimentation

ANS:-B

(a) Compressibility index

(b) Hausner’s ratio

(c) Angle of repose

(d) Bulk density

ANS:- D

6. What is the Hydrogen Deficiency Index (HDI) value for toluene?

(a) 1 

(b) 2 

(c) 3 

(d) 4

ANS:- D

7. In NMR, the aromatic proton resonate in a characteristic narrow range at:-

(a) 6.5 – 8.0 

(b) 11.0 – 12.0 

(c) 2.0 – 4.0 

(d) 0.7 –  1.3

ANS:-A

8. The difficulties of long elution time and poor resolution of complex mixtures are observed in elution analysis. These difficulties can be overcome by modification of elution analysis, known as:-

(a) Isocratic-elution analysis 

(b) Gradient-elution analysis

(c) Displacement analysis 

(d) Frontal analysis

ANS:- B

9. Materials whose consistency depends on the duration of shear, as well as on the rate of shear, exhibit:-

(a) Rheopexy 

(b) Thixotropy 

(c) Viscoelasticity 

(d) Plasticity

ANS:- B

10. Which of the following solutions are more likely to have the same osmotic pressure? Solutions of:

(a) Diluted nonelectrolytes with the same molal concentration

(b) Concentrated nonelectrolytes with the same molal concentration

(c) Diluted electrolytes with the same molal concentration

(d) Concentrated electrolytes with the same molal concentration

ANS:- A

1. What quantity of an indicator solution shall be added when quantity is not mentioned in an assay or test?

(a) 0.1 ml 

(b) 0.05 ml 

(c) 0.2 ml 

(d) 0.5 ml

ANS:- A

2. In the Kjeldahl method, a sample containing nitrogen is digested with __.

(a) Concentrated sodium hydroxide 

(b) Fuming nitric acid

(c) Concentrated sulphuric acid 

(d) Strong ammonia solution

ANS:- C

3. What is the concentration of paracetamol in a 0.1 N sodium hydroxide solution, whose absorption in a 1 cm cell at its maximum wavelength, 257 nm, was found to be 0.825? The A (1%, 1 cm) in the IP monograph of paracetamol is given as 715 at 257 nm

(a) 1.1 g/100 ml 

(b) 0.0011 mg/100 ml

(c) 0.0011 g/100 ml 

(d) 0.0011 ug/100 ml

ANS:- C

4. The unit for specific absorbance A (1%, 1cm) is:-

(a) ug/mL 

(b) mg/L 

(c) liter mole-1 cm-1 

(d) dl g-1 cm-1

ANS:- D

5. What is the nuclear magnetic resonance frequency of 1H in a 7.05 Tesla magnetic field strength?

(a) 300.0 MHz 

(b) 200.0 MHz 

(c) 60.0 MHz 

(d) 100 MHz

ANS:- A

6. Uncaria gambir belongs to the family:-

(a) Rubiaceae 

(b) Combretaceae 

(c) Punicaceae 

(d) Rosaceae

ANS:- A

7. Alkanna tinctoria (Boraginaceae) roots are used in:-

(a) Dandruff 

(b) Tooth paste

(c) Facial cleansing wash 

(d) Lipstick formulations and hair dyes

ANS:- D

8. Identify the clotting factor which is known as Stuart factor or thrombokinase.

(a) Clotting factor – IV

(b) Clotting factor – VIII

(c) Clotting factor – X 

(d) Clotting factor – XII

ANS:- C

9. Which part of the eye is light sensitive (photosensitive)?

(a) Iris 

(b) Sclera 

(c) Lens 

(d) Retina

ANS:- D

10. Identify the specific site where maturation of sperm takes place.

(a) Spermatic cord 

(b) Epididymis 

(c) Testis 

(d) Vas deferens

ANS:- B

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