CUET Questions — Chemistry — CUET UG

Q45. In hydrogen fuel cell, the reactants are bubbled through which electrodes?

Q29. The correct statement about 4f-series elements is: (a) Paramagnetism falls to minimum in Nd. (b) Lu3+ ions are bright green in aqueous solution. (c) Promethium is artificially synthesised 4f seri

Q48. Which of the following compound most readily undergoes nucleophilic addition reaction? (a) Formaldehyde (b) Acetone (c) Acetaldehyde (d) Di-tert-butyl ketone

Q34. Arrange the following in decreasing order of their boiling point (I) CH3-CH2-OH (II) CH3-O-CH3 (III) CH3-CH2-CH3 (a) I > II > III (b) II > III > I (c) III > I > II (d) II > I > III

Q28. Which gas is used for the manufacturing of Bleaching Powder?

Q35. p-Hydroxyazobenzene is also called as (a) Yellow dye (b) Red dye (c) Orange dye (d) Violet dye

Q43. White phosphorus on reacting with NaOH gives NaH2PO2 and PH3 as products. This is an example of. (a) Dimerisation reaction (b) Disproportionation reaction (c) Condensation reaction (d) Precipitat

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

Q24. Match List-I with List-II: List-I (A) CH3CH2Br + alc. KOH → (B) CH3CH2Br + aq. KOH → (C) CH3CH2Br + KNO2 → (D) CH3CH2Br + AgNO2 → List-II (I) CH3CH2NO2 (II) CH2=CH2 (III) CH3CH2ONO (IV) CH3CH2OH

Q48. The optimum pH for carrying out the reaction of aldehyde with hydroxylamine to form oxime is:

Q29. Which of the following statement is incorrect? (a) Brownian movement stabilises sol. (b) Both emulsifier and peptising agents stabilises colloids but their actions are different. (c) Mixing two o

Q50. The product of complete hydrolysis of XeF6 in the following reaction is XeF6 + H2O→? HF (a) XeOF4 (b) XeO2F2 (c) XeO3 (d) Xe

Q30. Which of the following alkyl halide will undergo SN1 reaction most readily: (a) (CH3)3C-F (b) (CH3)3C-Cl (c) (CH3)3C-Br (d) (CH3)3C-I

Q39. False statement about Frenkel defect is:

Q24. Which of the following is incorrect? (a) CH3-CH2-OH (H2SO4, Con/443 K) → CH2=CH2 + H2O (b) CH3-C(CH3)(OH)-CH3 (Cu, 573 K) → CH3-C(CH3)=O + CH4 (c) CH3-CH(OH)-CH3 (85% H3PO4) → CH3-CH=CH2 + H2O (d

Q15. Choose the incorrect statement. (a) In endothermic reaction reactant molecules have lower energy than product molecules (b) Energy of activated complex is higher than the energy of reactants (c)

Q25. In Kolbe's reaction, phenol undergoes:

Q17. When chlorine gas is passed through a hot solution of NaOH, a disproportionation reaction occurs. The zero-oxidation state of chlorine changes to: (A) 0 to +5 (B) 0 to -1 (C) 0 to +3 (D) 0 to +1

Q24. Match List-I with List-II: List-I (A) RNA (B) Nucleoside (C) Nucleotide (D) Sugar List-II (1) Adenosine (II) Adenosine monophosphate (III) Deoxyribose (IV) Uracil Choose the correct answer from t

Q32. Butanone is less reactive than propanal towards nucleophilic addition reaction because: (a) more +I effect found in butanone (b) less +I effect found in butanone (c) more +I effect found in propa