NEET 2022 Question Paper with Answer Key PDF in English Q2

NEET Questions

• 1.

  A microscope has an objective of focal length \(f_o = 2\) cm and an eyepiece of focal length \(f_e = 4\) cm. The tube length of the microscope is \(L = 40\) cm. If the distance of distinct vision of eye is \(D = 25\) cm, the magnification in the microscope is:

  • \( 125 \)
    
  • \( 150 \)
    
  • \( 250 \)
    
  • \( 100 \)
    
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• 2.

  Identify the correct orders against the property mentioned:
  A. H$_2$O $>$ NH$_3$ $>$ CHCl$_3$ - dipole moment
  B. XeF$_4$ $>$ XeO$_3$ $>$ XeF$_2$ - number of lone pairs on central atom 
  C. O–H $>$ C–H $>$ N–O - bond length 
  D. N$_2$>O$_2$>H$_2$ - bond enthalpy 
  Choose the correct answer from the options given below:

  • B, D only
    
  • A, C only
    
  • B, C only
    
  • A, D only
    
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• 3.

  Identify the suitable reagent for the following conversion: $Ph-C(=O)-OCH_3$ $\longrightarrow$ $Ph-CHO$

  • (i) $AlH(iBu)_{2}$ (ii) $H_{2}O$
     

  • (i) $NaBH_{4}$, (ii) $H^{+}H_{2}O$
     

  • $H_{2}$ $Pd-BaSO_{4}$
     

  • (i) $LiAlH_{4}$, (ii) $H^{+}$$H_{2}O$
     

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• 4.

  Name the class of enzyme that usually catalyzes the following reaction: \[ S - G + S^{\prime} \rightarrow S + S^{\prime} - G \] Where \( G \) represents a group other than hydrogen, \( S \) is a substrate, and \( S^{\prime} \) is another substrate.

  • Lyase
  • Transferase
  • Ligase
  • Hydrolase
    
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• 5.

  Among the given compounds I-III, the correct order of bond dissociation energy of the C-H bond marked with is:

  • I $>$ II $>$ III
    
  • III $>$ II $>$ I
    
  • II $>$ I $>$ III
    
  • I $>$ III $>$ II
    
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• 6.

  Given below are two statements:
  Statement I: Benzendiazonium salt is prepared by the reaction of aniline with nitrous acid at 273-278 K. It decomposes easily in the dry state.
  Statement II: Insertion of iodine into the benzene ring is difficult and hence iodobenzene is prepared through the reaction of benzendiazonium salt with KI.
  In the light of the above statements, choose the most appropriate answer from the options given below:

  • Both Statement I and Statement II are incorrect.
    
  • Statement I is correct but Statement II is incorrect.
    
  • Statement I is incorrect but Statement II is correct.
    
  • Both Statement I and Statement II are correct.
    
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