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Q.1. (B) Choose the correct alternative and rewrite the sentence :, 1. Electronic configuration of Ca is ............... 5, , (a) (2, 8, 4) (b) (2, 8, 8, 1), (c) (2, 8, 8, 2) (d) (2, 8, 2), 2. If the distance between two objects increases 5 times, the gravitational force, becomes .............. times., fa) 5S (b) 15, id = (d) 25, 25, , 3. The direction of magnetic field due to electric current is decided by .............. P, (a) Right hand thumb rule {b) Fleming’s left hand rule, (c) Fleming's right hand rule {d) None of the above, , 4. In the reaction given CuO, + H,, + Cu, + H,O,,. Copper oxide is ............. and, Typ uett 90 siniincenss :, (a) oxidized, reduced (b) reduced, oxidized, (c) unaffected, reduced (d) unaffected, oxidized, 5. Ice is a substance which .............. ¥, (a) expands on heating (b) contracts on heating, (c) contracts on cooling (d) remains unchanged, (6) .. . resembles alkali metals as well as, halogens., (a) Lithium (b) Sodium, (c) Hydrogen (d) Silicon, (7) _ First period consists of ..____._. elements., , (a) 1 (b) 8 (c) 2 (d) 4, (8) Electronic configuration of Mg is , (a) (2,8, 4) (b) (2,8, 1), (c) (2,8,3) (d) (2,8, 2), a ...is in liquid state at room temperature., (a) Fluorine (b) Chlorine, (c) Bromine (d) Iodine, (10) Atomic radius of Lithium is pm., , (a) 41 (b) 151. (ce): 152. (d):157