+2 chemistry - Important one mark questions - Fourth Set - Part 1

       Tamil Nadu +2 Chemistry - Important one mark questions

1. Noble gases have ------- electron affinity
(a)    high                 (b)    low                (c)    zero                (d)    very low

2. Copper is extracted from -------
(a)    Cuprite        (b)    copper glance      (c) malachite       (d)copper pyrites

3. Silver salt used in photography is
(a)    Agcl                 (b)AgNo₃                       (c) AgF                    (d)    AgBr

4. The most common oxidation state of Lanthanides is
(a)    +2                       (b) +1                          (c)    +3                   (d)    +4

5. --------- is used in gas lamp material
(a) MnO₂                (b) CeO₂                        (c) N₂O₅                    (d) Fe₂O₃         

6. The geometry of [Ni(CN)₄]^2- is
 

(a) Tetrahedral          (b)  square planar         (c)triangular          (d) Octahedral   

7. Which of the following is used as neutron absorber in nuclear reactors?

(a) Water          (b) Deuterium                (c) Uranium                 (d) Cadmium