CUET Questions — Chemistry

Q27. The IUPAC name of the complex [Pt(NH₃)₂Cl(NH₂CH₃)]Cl is:

Q19. If KMnO4 is reduced by oxalic acid in the acidic medium, then the oxidation number of Mn changes from:

Q13. In corrosion: (A) A metal is oxidised by loss of electrons to oxygen (B) It is an Electrochemical phenomenon (C) The object under corrosion behaves as anode (D) Coating the metal with Zn can save

Q7. [NiCl2(PPh3)2] is named as:

Q31. Which of the following statements is incorrect with respect to the plot of molar conductivity (Λm) versus square root of concentration (√c) for electrolytes in solution?

Q38. Antiseptics and disinfectants either kill or prevent growth of micro-organism. Identify which of the following statements is not true? (A) Disinfectants harm the living tissues. (B) A 0.2% soluti

Q15. Ferric oxide in blast furnace's upper half is mainly reduced by:

Q56. Which is the only metal that is liquid at room temperature?

Q2. The correct increasing order of basic strength of amine is: (A) C6H5NH2 < NH3 < C6H5CH2NH2 < C2H5NH2 < (C2H5)2NH (B) NH3 < C6H5NH2 < C6H5CH2NH2 < C2H5NH2 < (C2H5)2NH (C) C6H5CH2NH2 < C6H5NH2 < NH3

Q10. Indium is mainly refined by: (a) Vapour phase refining (b) Distillation (c) Zone refining (d) Liquation

Q33. In inorganic salt analysis, for the indicatory test of Cl⁻, conc. H₂SO₄ is used. This is because:

Q20. The pair in which both the species have the same magnetic moment (spin only value) is: (a) [Cr(H2O)6]2+, [CoCl4]2- (b) [Cr(H2O)6]2+, [Fe(H2O)6]2+ (c) [Mn(H2O)6]2+, [Cr(H2O)6]2+ (d) [CoCl4]2-, [Fe

Q39. A brown ring is formed in the ring test for NO3⁻ ion. It is due to the formation of

Q21. Decreasing order of freezing point of 0.1 M aqueous solution of following will be: (A) K4[Fe(CN)6] (B) K2SO4 (C) NH2CONH2 (D) AlCl3 (E) HCl Choose the correct answer from the options given below:

Q14. Rate of a reaction changes from 2.48 x 10-3 mol-1 sec-1 to 4.96 × 10-3mol-1 sec-1 when concentration of reactant, is changed from 0.6 M to 2.4 M respectively, the order of reaction is:

Q20. A+B → Nylon 6, 6 Predict A and B: (a) Ethylene glycol + adipic acid (b) Pentamethylene diamine + adipic acid (c) Hexamethylene amine + tartaric acid (d) Hexamethylene diamine + adipic acid

Q20. Osmotic pressure of solution formed by mixing 50 ml of 0.2 M urea and 50 ml of 0.4 m glucose aqueous solution at 298 K will be: (R = 0.083 L atm K-1 mol-1)

Q50. The product of complete hydrolysis of XeF6 in the following reaction is XeF6 + H2O→? HF

Q48. Nitrogen family show reducing characters. Least basic amongst the following is: (A) SbH3 (B) BiH3 (C) NH3 (D) PH3 Choose the correct answer from the options given below: (a) (C) Only (b) (A) Only

Q29. The desalination of sea water plant stops working due to which of the following reasons?