d)CH2=C-CH=CH2 | | CH3 CH3 21.Tabiiy tolali materiallarga nimalar kiradi.
a)jun, tabiiy ipak, paxta, lub (zig’ir, kanop, jut va boshqalar) b)kapron, paxta, nitron, tabiiy ipak
c)paxta, jun, kapron, nitron
d)jun, paxta, tabiiy ipak, asetat
22.Bir tonna butadiene kauchugi ishkab chiqarish uchun tarkibida 46% butan bo’lgan tabiiy gazdan qancha hajm (n.sh.da) zarur?
a)9.1012 m3 b)9 . 1013 m3 c)3 . 1013 m3 d)2 . 1012 m3 23.Polimerlanishda monomerlar orasida qanday bog’ vujudga keladi?
a)ion bog’lanish b)kovalent bog’lanish c)metal bog’lanish d)donor-akseptor bog’lanidh
24.Tetraftor etilenning polimerlanishidan olinadigan polimerning nomini aniqlang?
a)poliftoretan b)poliftoretilen c)Teflon d)polistirol
25.Sanoat miqyosida sintetik kauchuk olish usuli qachon, kim tomonidan taklif etilgan?
a)1932 yil, S.V.Lebedov b)1882 yli, M.G.Kucherov
c)1928 yil, S.V.Lebedov d)1924 yil, G.Shtaudinger
26.Sintetik tola kapron qanday reaksiya orqali olinadi.
a)polimerlanish b)sopolimerlanish c)oksidlanish d)polikondensatlanish 27.Kauchukni vulkanlashni topgan olim?
a)Guder b)Lomonosov c)Mendeleyev d)Dalton
28.112,5 g formalinga suyultirilgan sulfat kislotadan 4-5 tomchi tomizilganda, chumoli aldegidning polimerlanishdan hosil bo’lgan trioksimetilenning massasini toping. (Polimerlanish unumi 90%).
a)42 b)54 c)90 d)40,5
29.Keltirilgan moddalardan polimerlanish reaksiyasiga kirishuvchi ikkita moddani aniqlang: 1)glyukoza 2)eten 3)butadiene-1,3 4)fenilalanin 5)toluol
a)2, 3 b)1, 4 c)2, 5 d)3, 4
30.Kremniy organic kauchuk (siloksan) qanday reaksiya orqali qaysi monomerdan olinadi?
a)polimerlanish, dimetilsilandiol b)polikondensatlanish, dimetilsilandiol c)polimerlanish, metilsilantriol d)sopolimerlanish, aktilonitril va stirol
