Chemistry AP Exam Preparation - MCQ

1.	Which one of the following is wrongly matched? (A) [Ni(CO)4] - neutral ligand (B) [Cu (NH3 )4]+2 - square planar (C) [Co (en )3 ]+3 - follows EAN rule (D) [Fe (CN )6]-3 - sp3d2	Answer: (D)
2.	The oxidation state of iron in K4 [Fe (CN )6] is (A) 2 (B) 3 (C) 4 (D) 1	Answer: (A)
3.	The oxide of an element whose electronic configuration is ls2  2s2  2p6 3s1 is (A) Basic (B) Acidic (C) Neutral (D) Amphoteric	Answer: (A)
4.	The product formed when hydroxylamine condenses with a carbonyl compound is called (A) hydrazone (B) hydrazine (C) oxime (D) hydrazide	Answer: (C)
5.	The r.m.s. velocity of molecules of a gas of density 4 kg m-3 and pressure 1.2 ´ 105 Nm-2 is (A) 120 ms-1 (B) 600 ms-1 (C) 300 ms-1 (D) 900 ms-1	Answer: (C)
6.	The rate equation for a reaction: A ® B is r = K [A]°. If the initial concentration of the reactant is a mol dm-3, the half life period of the reaction is (A) (B)   (C)   (D)	Answer: (C)
7.	The reaction involved in the oil of Winter Green test is Salicylic acid  product. The product is treated with N&2CO3 solution. The missing reagent in the above reaction is (A) Ethanol (B) Methanol (C) Phenol (D) NaOH	Answer: (B)
8.	The reagent used in Clemmenson's reduction is (A) alc. KOH (B) aq. K0H (C) Zn-Hg / con. HCl (D) Conc. H2SO4	Answer: (C)
9.	The reagent used to convert an alkyne to alkene is (A) Zn / HCl (B) Sn / HCl (C) Zn - Hg / HCl (D) Pd / H2	Answer: (D)
10.	The set of quantum numbers for the outermost electron for copper in its ground state is ______. (A) 3, 2, 2, +½ (B) 4, 1, 1, +½ (C) 4, 2, 2, +½ (D) 4, 0, 0, +½	Answer: (D)