(1) CHequiv CH+H_(2)xrightarrow (Ni)? (3) CH_(3)-CH=CH_(2)+H_(2)xrightarrow (Ni)? (5) CH_(2)=C(CH_(3))-CH-CH_(3)+H_(2)Oxrightarrow (H_(2)SO_(4))? (7) CHequiv C-CH_(2)-CH_(3)+H_(2)Oxrightarrow (Hg^2+;80^circ C)? (9) CH_(3)-CH=CH_(2)+Br_(2)arrow ? (11) CH_(3)-Cequiv CH+H_(2)xrightarrow (xtLindlar;t^0)? (13) CH_(3)-Cequiv CH+[Ag(NH_(3))_(2)]OHarrow ? (15) CH_(3)-CH=CH_(2)+KMnO_(4)+H_(2)Oarrow ? (17) CH_(2)=CH_(2)+Br_(2)arrow ? (19) nCH_(2)=CH_(2)xrightarrow (xt;t^circ :p)?

1. $CH\equiv CH+H_{2}\xrightarrow {Ni} CH_{2}=CH_{2}$<br />3. $CH_{3}-CH=CH_{2}+H_{2}\xrightarrow {Ni} CH_{3}-CH_{2}-CH_{3}$<br />5. $CH_{2}=C(CH_{3})-CH-CH_{3}+H_{2}O\xrightarrow {H_{2}SO_{4}} CH_{3}-C(CH_{3})=CH_{2}+H_{2}O$<br />7. $CH\equiv C-CH_{2}-CH_{3}+H_{2}O\xrightarrow {Hg^{2+};80^{\circ }C} CH_{3}-C(CH_{3})=CH_{2}+H_{2}O$<br />9. $CH_{3}-CH=CH_{2}+Br_{2}\rightarrow CH_{3}-CH(Br)-CH_{2}Br$<br />11. $CH_{3}-C\equiv CH+H_{2}\xrightarrow {xtLindlar;t^{0}} CH_{3}-CH_{2}-C\equiv CH$<br />13. $CH_{3}-C\equiv CH+[Ag(NH_{3})_{2}]OH\rightarrow CH_{3}-C(OH)-CH_{3}+Ag$<br />15. $CH_{3}-CH=CH_{2}+KMnO_{4}+H_{2}O\rightarrow CH_{3}-COOH+H_{2}O$<br />17. $CH_{2}=CH_{2}+Br_{2}\rightarrow CH_{2}Br-CH_{2}Br$<br />19. $nCH_{2}=CH_{2}\xrightarrow {xt;t^{\circ }:p} (CH_{2})_{n}$