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NEET UG Chemistry PYQs with solutions

Chapter-wise Chemistry previous year questions for NEET UG. Open any question for options, correct answer and solution.

21,114 questions34 chapters
1

Which of the following molecules shows sp ^3 d hybridisation?

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2

Identify a pair of molecules having zero dipole moment.

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3

Identify the correct decreasing order of lattice enthalpy for metal fluorides from following.

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4

For which of the following solids does solubility decrease with an increase in temperature?

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5

Given below are certain reactions. Identify the reaction for which K_p K_c :

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6

Higher yield of NO in N ₂( ~g )+ O ₂( ~g ) 2 NO ( g ) can be obtained at [ H of the reaction =+180.7 ~kJ ~mol ⁻¹ ] A. higher temperature B. lower temperature C. higher concentratio

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7

The combination of NO ₂(g) and CO (g) occurs in two steps as follows: What is the rate law for the reaction? 2 NO ₂ NO + NO ₃(k₁) - slow NO ₃ + CO CO ₂ + NO ₂(k₂) - fast

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8

The slope of the graph [ A ]_t against time for zero order reaction is

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9

For the reaction C ₂ H ₅ Br _ (l) C ₂ H _ 4(g) + HBr , r = K( C ₂ H ₅ Br ) What is order and molecularity of the reaction respectively ?

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10

Which of the following are not used for the treatment of humans?

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11

Identify the metal nanoparticle that acts as a highly effective bacterial disinfectant in the water purification process.

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12

What is the correct chemical name of an insecticide DDT?

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13

Match the following List I List II A. Technetium I. Non-metal B. Fluorine II. Transition metal C. Tellurium III. Lanthanoid D. Dysprosium IV. Metalloid

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14

Which of the following properties increases from fluorine to iodine in group?

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15

Identify the metalloid element from the following.

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16

[ Ti(H ₂ O) ₆]²⁺ is a colored compound where as [ Zn(H ₂ O) ₆]²⁺ is colorless, because

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17

What is coordination number of central metal ion in cisplatin ?

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18

Which of the following complexes exhibits solvate isomerism?

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19

Although +3 oxidation state is most common in lanthanoids, cerium still shows +4 oxidation state because :

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20

The lanthanide ion having four unpaired electrons is (Given : Atomic numbers of Ce =58 , Nd =60 , Tb =65 and Ho =67 )

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21

The green paramagnetic species formed by heating KMn O₄ at 513 K is

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22

Calculate the conductivity of 0.025 M BaCl ₂ solution if the molar conductivity of salt at 25^ C is 325 ⁻¹ cm ^2 mol ⁻¹ .

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23

Calculate the equilibrium constant at 25 ^ C for the cell reaction, Ni(s) + Cu ²⁺(1 M ) Ni ²⁺(1 M ) + Cu(s) if E^ _ cell is 0.592 V .

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24

Calculate the time required in second to deposit 5.85 g Ni from NiCl ₂ solution by passing 10 A current (molar mass of Ni = 58.5 g mol ⁻¹ )

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25

The reaction that does NOT takes place in blast furnace between 900K and 1500K temperature range during the extraction of iron is:

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26

Read the following statements and choose the set of correct statements: (A) Chrome steel is used for cutting tools and crushing machines. (B) The fine dust of aluminium is used in

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27

Match List-I with List-II. List-I (Ores) List-II (Composition) (a) Haematite (i) Fe 3 O 4 (b) Magnetite (ii) ZnCO 3 (c) Calamine (iii) Fe 2 O 3 (d) Kaolinite (iv) Al 2 ( OH ) 4 Si

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28

What amount of NaOH should be dissolved in a 500 mL solution, so that the p ^ H of solution is 12 at 298 K ?

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29

Which of the following buffer solutions is used for precipitation of cations of the III A group?

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30

The degree of dissociation of weak acid is directly proportional to

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31

Identify the incorrect statement from the following :

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32

Given below are two statements: Statement-I : Heating NaCl with concentrated H₂ SO₄ and MnO₂ results in oxidation of Mn. Statement-II : Heating NaI with concentrated H₂ SO₄ and MnO

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33

Given below are two statements: Statement I : Like nitrogen that can form ammonia, arsenic can form arsine. Statement II : Antimony cannot form antimony pentoxide. In the light of

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34

The starting material used for the preparation of decron is

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35

What type of fiber is silk?

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36

Amongst the following, identify a copolymer.

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37

In a test tube containing a salt, a few drops of dilute H ₂ SO ₄ was added, which gave colourless vapours having the smell of vinegar. The vapours turned the blue litmus paper red.

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38

Match List I with List II: array |l|l|l|l| & List - I (Ion) & & List - II (Group Number in Cation Analysis) A . & Co ²⁺ & (i) & Group-I B. & Mg ²⁺ & (ii) & Group-III C. & Pb ²⁺ & (

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39

Given below are certain cations. Using inorganic qualitative analysis, arrange them in increasing group number from 0 to VI . A. Al ³⁺ B. Cu ²⁺ C. Ba ²⁺ D. Co ²⁺ E. Mg ²⁺ Choose th

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40

Calculate the oxidation number of sulfur in H ₂ SO ₄ .

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