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The unofficial CUET UG Chemistry Answer Key 2024 prepared by subject experts is now available here for all question paper sets: Set A to Set D. Download CUET Chemistry answer key 2024 now.
CUET UG Chemistry Answer Key 2024 UnofficialCUET UG Chemistry Answer Key 2024 Unofficial: The National Testing Agency conducted the CUET UG 2024 Chemistry exam from 10 AM to 11 AM on May 15. Candidates who appeared for the exam can check CUET Chemistry Answer Key 2024 prepared with the help of subject experts. Until the official answer key is released, candidates can make use of the unofficial answer key to determine the marks they may obtain in the examination. CUET Chemistry Answer Key 2024 for all the sets - Set A, Set B, Set C, and Set D - is now available below.
| CUET UG 2024 May 17 Answer Key 2024 | CUET Percentile Score 2024 for All Subejcts |
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CUET UG Chemistry Unofficial Answer Key 2024
The unofficial answer key for the CUET UG Chemistry 2024 paper is updated here.
Questions across all paper sets are the same, only the order is shuffled . Hence, the questions and answers are directly provided here so that the answer key becomes accessible for all sets.
| Questions | Answers |
|---|---|
| 1. The total number of ions produced from the complex [Cr(NH 3 ) 6 ]Cl 3 in aqueous solution will be | (3) 4 |
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2. Arrange the following in decreasing order of number of molecules contained in:
(A) 16 g of O 2 (B) 16 g of CO 2 (C) 16 g of CO (D) 16 g of H 2 Choose the correct order from the options given below: | (4) (C), (B), (D), (A) |
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3. A molecule X associates in a given solvent as per the following equation:
X ⇌ (X) n For a given concentration of X, the van't Hoff factors was found to be 0.80 and the fraction of molecules was 0.3. The correct value of 'n' is: | (2) 3 |
| 4. The oxidation number of Co in complex [Co(H 2 NCH 2 CH 2 NH 2 ) 3 ] 2 (SO 4 ) 3 is | (1) 3 |
| 5. The correct structure of dipeptide, Gly-Ala (glycyl alanine) is | (1) H 2 N - CH 2 - CO - NH - CH(CH 3 ) - COOH |
| 6. The Cu metal crystallises into fee lattice with a unit cell edge length of 361 pm. The radius of Cu atom is: | (1) 127 pm |
| 7. If 75% of a first onder reaction gets completed) in 32 minutes, time taken for 50% completion of this reaction is | (1) 16 minutes |
| 8. Which of the following compounds will be repelled when placed in an external magnetic field? | (1) Na 2 [CuCl 4 ] |
| 9. The spin only magnetic moment of Hexacyanidomanganate(II) ion is ______ BM. | (1) 5.90 |
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10. The correct order of increasing boiling points of the following compounds is:
Pentan-1-ol, n-Butane, Pentanal, Ethoxyethane | (4) n-Butane, Ethoxyethane, Pentanal, Pentan-1-ol |
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11. In the following reaction, identify the product D.
C 6 H 5 -OH →(in presence of Zn dust)→ A →(in presence of CH 3 Cl + anhy. AlCl 3 )→ B →(in presence of K 2 Cr 2 O 7 + H 2 SO 4 )→ C →(in presence of H 2 SO 4 + HNO 3 )→ D | (4) m-Nitrobenzoic acid |
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12. The gold number range of some of the lyophilic colloids is given below :
A: 0.005 – 0.01, B: 0.15 – 0.25, C: 0.04 – 1.0 and D: 15 – 25. Which among these can be used as a better protective colloid? | (1) A |
| 13. Reaction of aniline with conc. HNO 3 and conc. H 2 SO 4 at 298 K will produce 47% of | (3) m-Nitroaniline |
| 14. What will be the increasing order of basic strength of the following compounds? | (2) C 6 H 5 NH 2 < C 2 H 5 NH 2 < (C 2 H 5 ) 3 N < (C 2 H 5 ) 2 NH |
| 15. Which of the following compounds will give Hell-Volhard-Zelinsky reaction? | (1) R - CH 2 - COOH |
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16. Arrange the following acids in increasing order of their acidic strengths:
HCOOH, FCH 2 COOH, NO 2 CH 2 COOH, CICH 2 COOH | (4) HCOOH < CICH 2 COOH < FCH 2 COOH < NO 2 CH 2 COOH |
| 17. In the following compounds, what is the increasing order of their reactivity towards nucleophilic addition reactions? | (3) Acetophenone < p-Tolualdehyde < Benzaldehyde < p-Nitrobenzaldehyde |
| 18. The Gatterman-Koch reaction is used in the industrial preparation of benzaldehyde. The electrophile involved in this reaction is | (3) HCO + |
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19. Formaldehyde undergoes Cannizzaro reaction because
(A) It has alpha-hydrogen atom. (B) It does not have alpha-hydrogen atom. (C) It does not undergo self-oxidation and reduction on heating with concentrated alkali. (D) It undergo self-oxidation and reduction on heating with concentrated alkali. Choose the correct answer from the options given below : | (1) (B) and (D) only |
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20. In the reaction, (CH
3
)
3
COCH
3
+ HI → Products
CH 3 OH and (CH 3 ) 3 CI are the products and not CH 3 I and (CH 3 ) 3 C – OH. It is because, (A) in step 2 of the reaction the departure of leaving group (HO – CH 3 ) creates less stable carbocation. (B) in step 2 of the reaction the departure of leaving group (HO – CH 3 ) creates more stable carbocation. (C) the reaction follows S N 1 mechanism. (D) the reaction follows S N 2 mechanism. Choose the correct answer from the options given below: | (2) (B) and (C) only |
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21. Aniline does not undergo Friedel-Crafts reaction because
(A) It forms salt with the Lewis acid catalyst, AICI (B) Nitrogen of aniline acquires negative charge. (C) Nitrogen of aniline acquires positive charge. (D) Nitrogen acts as a strong deactivating group in the further reaction. Choose the correct answer from the options given below : | (3) (A), (C), and (D) only |
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22. Although chlorine is an electron withdrawing group, yet it is ortho- and para-directing in electrophi aromatic substitution reaction because
(A) Chlorine withdraws electrons through inductive effect. (B) Chlorine destabilises the intermediate carbocation formed during electrophilic substitution. (C) Chlorine accepts electrons through resonance. (D) Chlorine releases electrons through resonance. Choose the correct answer from the options given below: | (1) (A), (B), and (D) only |
| 23. In Etard reaction, the final product is | (1) Aromatic aldehyde |
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24. Match List-I with List-II:
List-I (A) Amino acids linked in a specific sequence (B) Regular folding of a specific sequence of amino acids due to π-bonding (C) Fibrous proteins (D) Spatial arrangement of two or more polypeptide chains List-II (I) Primary structure of proteins (II) Secondary structure of proteins (III) Quaternary structure of proteins (IV) Tertiary structure of proteins Choose the correct answer from the options given below: | (3) (A) - (I), (B) - (II), (C) - (IV), (D) - (III) |
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25. Match List-I with List-II:
List-I (A) Tollen's reagent (B) Jones reagent (C) Lucas reagent (D) Fehling solution List-II (I) Rochelle salt (II) Conc. HCl and ZnCl 2 (III) Ammoniacal silver nitrate (IV) Chromium trioxide-sulphuric acid Choose the correct answer from the options given below: | (1) (A) - (III), (B) - (IV), (C) - (II), (D) - (I) |
|
26.Match List-I with List-II:
List-I (A) Swarts Reaction (B) Finkelstein reaction (C) Sandmeyer's reaction (D) Wurtz reaction List-II (I) C 6 H 5 NH 2 + NaNO 2 + HX + Cu 2 X 2 → C 6 H 5 X + N 2 (II) 2RX+Na → R–R+ 2NaX (III) RX+ AgF → R–F+AgX (IV) RX + NaI → R–I + NaX Choose the correct answer from the options given below: | (4) (A) - (III), (B) - (IV), (C) - (I), (D) - (II) |
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27. Match List-I with List-II:
List-I (Biomolecule) (A) Vitamin A (B) Thiamine (C) Glucocorticoids (D) Estradiol List-II (Function/Diseases) (I) Menstrual cycle (II) Xerophthalmia (III) Beri-Beri (IV) Addison's disease Choose the correct answer from the options given below: | (4) (A) - (II), (B) - (III), (C) - (IV), (D) - (I) |
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28. In the following table, match the reactants given in List-I with the correct product in List-II as per the reaction of hydration of alkene under acidic conditions.
(A diagrammatic representation of Reactants and Products is given.) Choose the correct answer from the options given below: | (3) (A) - (II), (B) - (I), (C) - (IV), (D) - (III) |
| 29. Which among the following is not an Analgesic? | (4) Ranitidine |
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30. The increasing order of acidity of the following compounds based on pKa values is
(A) BrCH 2 COOH (B) CICH 2 COOH (C) FCH 2 COOH (D) HCOOH Choose the correct answer from the options given below: | (1) (D) < (A) < (B) < (C) |
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31. For S
N
2 reaction, the increasing order of the reactivity of the following alkyl halides is:
(A) CH 3 CH 2 CH 2 CH 2 Br (B) CH 3 CH 2 CH(Br)CH 3 (C) (CH 3 ) 3 CBr (D) (CH 3 ) 2 CHCH 2 Br Choose the correct answer from the options given below: | (4) (C) < (B) < (D) < (A) |
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Read the following passage and answer the next five questions based on it.
Battery or cell converts chemical energy of the redox reaction to electrical energy. In fuel cell (a galvanic cell), the chemical energy of combustion of fuels like H 2 , ethanol, etc. are directly converted to electrical energy. In a fuel cell, H 2 and O 2 react to produce electricity, where H 2 gas is oxidised at anode and oxygen is reduced at cathode and the reactions involved are Anode reaction: H 2 + 2OH - → 2H 2 O + 2e - Cathode reaction: O 2 + 2H 2 O + 4e - → 4OH - 67.2 L of H 2 at STP reacts in 15 minutes. | |
| 32. The number of moles of hydrogen oxidised is: | (1) 0.33 moles |
| 33. The number of moles of electrons produced in the oxidation of 67.2 L of H 2 at STP is: | (4) 6 moles |
| 34. The quantity of electricity produced in the oxidation of 67.2 L of H 2 at STP is: | (2) 579000 C |
| 35. If the entire current produced is used for the electrodeposition of Silver (at.vt. 108 g mol -1 ) from Silver (1) solution, the amount of silver deposited will be | (3) 108 g |
| 36. The source of electrical energy on the Apollo moon light was: | (4) H 2 - O 2 Fuel Cell |
|
Read the following passage and answer the next five questions based on it.
Sc Ti V Cr Mn Fe Co Ni Cu Zn Y Zr Nb Mo Te Ru Rh Pd Ag Cd La Hf Ta W Re Os Ir Pt Au Hg In any transition series, as we move from left to right he d-orbitals are progressively filled and their properties vary accordingly. Ce Pr Nd Pm Sm Eu Gd Tb Dy Ho Er Tm Yb Lu Th Pa U Np Pu Am Cm Bk Cf Es Fin Md No Lr The above are the two series of f-block elements in which the chemical properties won't change much. The Sf-series elements are radioactive in nature and mostly are artificially synthesized in laboratories and thus much is not known about their chemical properties. | |
| 37. Identify the incorrect statement. | (4) Interstitial compounds are non-stoichiometric and neither ionic nor covalent in nature. |
| 38. Which of the following is the correct order of second ionisation enthalpy? | (3) V < Cr > Mn |
| 39. Which of the following pair of compounds exhibits same colour in aqueous solution? | (2) VOCl 2 , CuCl 2 |
| 40. Which metal has the highest oxidation state in the first row transition series? | (3) Mn |
| 41. Why do the actinoids exhibit higher number of oxidation states than lanthanoids? | (2) Energy difference between 5f and 6d is less (5th respect to the energy difference between 4f and 5d. |
| 42. Camphor in nitrogen gas is a type of solution | (2) Solid - Gas |
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43. Identify the correct order of organic compounds th the following chemical reaction:
__ ? ___ + Mg →(in presence of Dry Ether)→ __ ? ___ →(in presence of H 2 O)→ __ ? ___ →(in presence of Cl 2 , heat)→ __ ? ___ (A) CH 2 MgBr (B) CH 3 Br (C) CH 3 Cl (D) CH 4 Choose the correct answer from the options given below: | (1) (B), (A), (D), (C) |
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44. Consider the following statements regarding osmotic pressure:
(A) Molar mass of a protein can be determinedising osmotic pressure method. (B) The osmotic pressure is proportional to the Tholarity. (C) Reverse osmosis occurs when a pressure larger than osmotic pressure is applied to the concentrated solution side. (D) Edema occurs due to retention of water in tissue cells as a result of osmosis. Choose the correct statements with reference to osmotic pressure: | (4) (B), (C), and (D) only |
| 45. Vapour pressures of pure liquids 'A' and 'D' at 50°C are 500 mm mm Hg and 800 mm Hg respectively. The binary solution of 'A' and 'D' boils at 50°C and 700 mm Hg pressure. The mole percentage of 'D' in the solution is: | To be updated |
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46. For the following reaction:
2A 2 (g) + (1/4) X (g) → 2A 2 X (g) volume is increased to double its value by decreasing the pressure on it. If the reaction is first order wi respect to X and second order with respect to A 2 , the rate of reaction will : | (2) Increase by eight times of its initial value |
| 47. The total number of sigma bonds present in P 4 O 10 are: | (3) 16 |
| 48. In the electrolysis of alumina to obtain Aluminium metal, the cryolite is added mainly to | (1) lower the melting point of alumina. |
| 49. Identify the order of reaction if its rate constant is k = 2 x 10 -2 s -1 . | (2) First order |
| 50. For a complex reaction, the order of reaction is equal to | (4) The molecularity of slowest step of reaction. |
Note: As this is the unofficial CUET UG Che2mistry answer key 2024, there might be some errors in the answers despite the efforts taken to make it error-free.
| Chemistry Important Links | Chemistry Important Links |
|---|---|
| CUET UG Chemistry Expected Cutoff 2024 | CUET UG Chemistry Expected Percentile Score 2024 |
| CUET UG Expected Cutoff 2024 for All Subjects | -- |
Marks vs Percentile
| Range | Expected Percentile |
|---|---|
| 170 Marks | Expected Percentile for 170 Marks in CUET 2024 |
| 160 Marks | Expected Percentile for 160 Marks in CUET 2024 |
| 150 Marks | Expected Percentile for 150 Marks in CUET 2024 |
| 140 Marks | Expected Percentile for 140 Marks in CUET 2024 |
| 130 Marks | Expected Percentile for 130 Marks in CUET 2024 |
| 120 Marks | Expected Percentile for 120 Marks in CUET 2024 |
Percentile vs Marks
