Chemistry NEET UG 2026 Practice Paper (Day 42)

Chemistry NEET UG 2026 Practice Paper (Day 42): Chemistry NEET UG 2026 Practice Paper (Day 42): Consistency is the secret ingredient behind every top NEET rank, and your Practice Paper (Day 42) is another powerful step in that journey. Today’s questions are carefully designed to strengthen your conceptual clarity, improve speed, and help you identify important exam-pattern trends for NEET UG 2026. Whether you’re revising Physical Chemistry formulas, sharpening Organic mechanisms, or reinforcing Inorganic facts, this practice set will help you move one step closer to your dream medical college.

Q.1. KH value for Ar(g), CO2(g), HCHO (g) and CH4(g) are 40.39, 1.67, 1.83 × 10-5 and 0.413 respectively. Arrange these gases in the order of their increasing solubility.

a) HCHO < CH4 < CO2 < Ar

b) HCHO < CO2 < CH4 < Ar

c) Ar < CO2 < CH4 < HCHO

d) Ar < CH4 < CO2 < HCHO

Q.2. When a non-volatile solid is added to pure water it will:

a) boil above 100oC and freeze above 0oC

b) boil below 100oC and freeze above 0oC

c) boil above 100oC and freeze below 0oC

d) boil below 100oC and freeze below 0oC

Q.3. Molarity of a solution at 60oC is——– than molarity at 30oC

a) More

b) less

c) same

d) no effect of temperature

Q.4. 4.5 g of aluminium (at. mass 27 amu) is deposited at cathode from Al3+ solution by a certain quantity of electric charge. The volume of hydrogen produced at STP from H+ ions in solution by the same quantity of electric charge will be:

(a) 44.8 L

(b) 11.2 L

(c) 22.4 L

(d) 5.6 L

Q.5. Ionic mobility of Ag+ ions? [Ag= 5 × 10-4ohm-1cm² eq-1] is

(a) 5.2 × 10-9

(b) 2.4 × 10-9

(c) 1.52 × 10-9

(d) 8.25 × 10-9

Q.6. If the equivalent conductance of 1 M benzoic acid is 12.8 ohm-1 cm² and if the conductance of benzoate ion and H+ ion are 42 and 288.42 ohm-1cm², respectively, its degree of dissociation is:

(a) 39%

(b) 3.9%

(c) 0.35%

(d) 0.039%

Q.7. Which among the following is a false statement?

(a) Rate of zero order reaction is independent of initial concentration of reactant.

(b) Half life of a third order reaction is inversely proportional to square of initial concentration of the reactant.

(c) Molecularity of a reaction may be zero or fraction.

(d) For a first order reaction, t1/2=0.693K

Q.8. Which of the following statements about the catalyst is true?

(a) A catalyst accelerates the rate of reaction by bringing down the activation energy.

(b) A catalyst does not participate in reaction mechanism.

(c) A catalyst makes the reaction feasible by making ∆G more negative.

(d) A catalyst makes equilibrium constant more favourable for forward reaction

Q.9. For a chemical reaction A→B, it is found that the rate of reaction doubles when the concentration of A is increased four times. The order of reaction is

(a) Two

(b) One

(c) Half

(d) Zero

Q.10. Transition elements form alloys easily because they have

(a) Same atomic number

(b) Same electronic configuration

(c) Nearly same atomic size

(d) None of the above

Q.11. The properties which is not characteristic of transition elements-

(a) Variable oxidation state

(b) Tendency to form complexes

(c) Formation of colour compounds

(d) natural radioactivity

Q.12. Actinoid contraction is caused due to :

(a) Poor shielding effect of 5f electrons

(b) Poor shielding effect of 4f electrons

(c) Electronic repulsion of 5f electrons

(d) Electronic repulsion of 4f electrons

Q.13. Which of the following is not a consequence of lanthanide contraction?

(a) From La+3 to Lu+3, the ionic radii changes from 106 pm to 85 pm

(b) As the size of the lanthanide ions decreases the basic strength increases

(c) The basic character of oxides and hydroxides decreases with increase in
atomic number

(d) The atomic radii of 4d and 5d series is similar

Q.14. The correct name of the compound Cu(NH3)4(NO3)2 according to IUPAC system is

(a) Cuprammonium nitrate

(b)Tetrammonium copper (II) dinitrate

(c) tetraamminecopper (Il) nitrate

(d) tetrammine copper (II) dinitrite

Q.15. The IUPAC name of complex ion ,[Fe(CN)6] 3- is

(a) Hexacyanidoiron(III)ion

(b) Hexacyanatoferrate (III)ion

(c) Hexacyanidoferrate (III)ion

(d) Tricyanoiron(III)ion

Keep practicing daily and track your progress after each paper that’s how toppers are made! Don’t forget to revisit the questions you found tricky and turn your weak areas into strengths. Stay consistent, stay curious, and keep visiting regularly for the next practice sets in this series.

The Questions might feel easy, as they are intentionally kept easy level. We will gradually increase the difficulty level.

All The Best!

Answers

Ans.1. A. HCHO < CH4 < CO2 < Ar

Ans.2. A. boil above 100oC and freeze above 0oC

Ans.3. B. Less

Ans.4. D. 5.6 L. From second law of Faraday
1 Faraday deposits 1 equivalent of any substance. For Al: 3 Faradays deposit 27 g Al → 1 Faraday deposits 9 g Al 4.5 g Al is deposited by = 4.5 / 9 = 0.5 Faraday For H₂: 1 Faraday produces 11.2 L H₂ at STP (Because 2 Faradays produce 22.4 L H₂) Therefore, 0.5 Faraday produces = 0.5 × 11.2 = 5.6 L H₂ at STP.

Ans.5. A. 5.2 × 10-9

Ans.6. B. 3.9%

Ans.7. (C) Molecularity of a reaction may be zero or fraction.

Ans.8. A. A catalyst accelerates the rate of reaction by bringing down the activation energy

Ans.9. (c) Half

Ans.10. (c) Nearly same atomic size

Ans.11. (D) natural radioactivity

Ans.12. A. Poor shielding effect of 5f electrons

Ans.13. B. This statement is incorrect. In fact, as the ionic size decreases, the basic strength decreases. According to Fajan’s rules, a smaller cation size increases the covalent character of the bond, making it harder for the hydroxide to dissociate and thus reducing basicity.

Ans.14. (c) tetraamminecopper (Il) nitrate

Ans.15. (c) Hexacyanidoferrate (III)ion

I read a few comments that many of you are feeling stressed and concerned as the exam is approaching. My only advise to you is that you must believe that you are going to crack this exam and get admitted in your dream medical college. Also, we are always here for you.

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