CUET Questions — Chemistry

Q23. Which of the following has the highest flocculating power? (a) [Fe(CN)6]4- (b) PO43- (c) SO42- (d) Cl-

Q18. The actual density of a crystal of NaCl is observed to be lower than the expected value. It is caused due to the presence of:

Q31. Yellow colour in NaCl is due to (a) Schottky defect (b) Metal excess defect due to anionic vacancies (c) Frenkel defect (d) Metal deficiency defect

Q25. What is the packing efficiency of simple cubic lattice?

Q34. According to Alexander Zaitsev the most preferred product for dehydrohalogenation of 2-Bromopentane will be:

Q44. Which of the following statement is correct regarding hydrogen fuel cells?

Q44. PH3 is a better reducing agent than NH3 because: (a) PH3 can give its lone pair of electron easily (b) Bond dissociation enthalpy of P-H is low (c) Bond dissociation enthalpy of P-H is high (d) P

Q20. Identify the correct relation between the molar mass of solute and Ebullioscopic constant. (a) M2 = 1000×W2×W1 / (ΔTb×Kb) (b) ΔTb = 1000×W2×Kb×M2 / W1 (c) M2 = 1000×W2×Kb / (ΔTb×W1) (d) M2 = 1000

Q40. Which of the following ion is colourless? (a) Zn2+ (b) Ti3+ (c) Mn3+ (d) Cr3+

Q40. Which of the following reaction occurs at anode during discharging of lead storage battery? (a) PbO2 + SO4 2-(aq) + H+(aq) + 2e- → PbSO4(s) + 2H2O(l) (b) Pb(s) + SO4 2-(aq) → PbSO4(s) + 2e- (c) P

Q6. 2KClO3 (653-873K) → 2KCl + 302 On adding manganese dioxide to the above reaction, the subsequent decomposition takes place at

Q41. Which of the following is the correct statement? (a) Phosphates have no biological significance in humans. (b) Between nitrates and phosphates, phosphates are less abundant in the earth's crust.

Q23. Match List I with List II List - I A. Cr3+ B. Mn4+ C. Cu+ D. Ti4+ List - II I. d³ configuration II. d10 configuration III. Paramagnetic IV. Diamagnetic Choose the correct answer from the options

Q15. For the brown ring test, the correct order of the steps in the experiment is: (A) Pour conc. H₂SO₄ very slowly along the side of the test tube, very few drops of the acid should be poured. (B) Ta

Q16. The correct shape & hybridisation for XeF2 are:

Q21. Experimentally determined molar mass is always lower than the true value in case of:

Q10. We have four aqueous solution labelled as: (A) 0.1 M NaCl (B) 0.01 M NaCl (C) 0.01 M BaCl₂ (D) 0.01 M Sucrose Choose the correct increasing order of Van't Hoff factor from the options given below

Q19. Reaction occurring at cathode is HgO + H2O + 2e- → Hg (l) + 2 OH- Above reaction is found in: (a) Leclanche cell (b) Mercury cell (c) Fuel cell (d) Ni-Cd-cell

Q16. In the following sequence of reaction: CH3Br --(KCN)--> A --(H3O+)--> B --(LiAlH4/ether)--> C The end product (C) is (a) Acetone (b) Methane (c) Acetaldehyde (d) Ethyl alcohol

Q26. For the following oxo acids, choose the increasing order of their acidity: (A) HClO < HClO₂ < HClO₄ < HClO₃ (B) HClO₄ < HClO₂ < HClO₃ < HClO (C) HClO₃ < HClO₄ < HClO₂ < HClO (D) HClO < HClO₂ < HC