+2 chemistry - Important one mark questions - Fifth Set - Part 2

Part two one mark questions, continued from the previous set. Questions from  8-14 covering the entire chemistry syllabus is provided below.



8. ------------- forms oxocations

(a) Lanthanides      (b) Actinides          (c) Noble gases      (d) Alkali metals

9. A metal ion in its complex salt has the spin magnetic moment 3.87 BM. The number of unpaired electrons in it is

(a) 1                      (b) 2                      (c) 3                      (d) 4

10. A radioactive element ₈₄A²¹⁸ finally becomes ₈₂B²⁰⁶. The number of α and

β particles emitted by it are respectively

(a) 8;6                         (b) 4;3                   (c) 3;4                             (d) 3;6

11. In a simple cubic unit cell, a corner atom is shared by ---------- unit cells

(a) 1                      (b) 2                      (c) 4                      (d) 8

12. Ethylene diamine gives ethylene glycol on reaction with

(a) Sodium carbonate                                    (b) Nitrous acid 

(c) Sodium bicarbonate                                  (d) Bayer's reagent

13. C₂H₅ O C₂H₅ and CH₃OCH(CH₃)₂ are

(a) Positional isomers                                      (b) Functional isomers              

(c) Chain isomers                                            (d) Metamers        

14. Diethyl ether can be decomposed by using

(a) HI                     (b) Na                    (c) KOH                  (d) BF₃