8. H,O, is a powerful agent (a) dehydrating (b) oxidising(c) reducing (d) desulphurising 9. is used as a propellant in nucleus (a) HO, (b) DO (c) ND; (d) CH = CH. 10. The oxidation state of alkali metals is (a) +2. (b) 0 (c)+1 (d) +3 11. When heated in bunsen flame, lithium gives colour (a) yellow (b) blue (c) lilac (d) crimson red 12.On moving down the group, density of the alkali metals (a) increases (b) decreases (c) increases and then decreases (d) decreases and then increases
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8. H,O, is a powerful agent (a) dehydrating (b) oxidising(c) reducing (d) desulphurising 9. is used as a propellant in nucleus (a) HO, (b) DO (c) ND; (d) CH = CH. 10. The oxidation state of alkali metals is (a) +2. (b) 0 (c)+1 (d) +3 11. When heated in bunsen flame, lithium gives colour (a) yellow (b) blue (c) lilac (d) crimson red 12.On moving down the group, density of the alkali metals (a) increases (b) decreases (c) increases and then decreases (d) decreases and then increases
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