JEE Main, AIPMT MCQs Set 22

Sr. No.

Question

Answer

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 N₂CO₃ 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)