demo variant 8-sinf 1-bsb

demo variant 8-sinf 1-bsb i. yopiq test. (har biriga 1,5 ball) 1. berilgan moddalardan amfoter oksidlar berilgan qatorni toping. a) cr2o3 b) na2o c) co2 d) so2 2. o’yuvchi natriy berilgan qatorni toping a) na2o b) na c) naoh d) nacl ii. ochiq test. (har bir savolga 2 ball). [4 ball] 3. berilgan namunalar ichidan befarq oksidlarni belgilang. (to’g’ri javoblar dumaloq ichiga olinadi). no no2 co2 co n2o5 4. berilgan namunalar ichidan suvda erimaydigan asoslarni belgilang. (to’g’ri javoblar dumaloq ichiga olinadi). naoh cu(oh)2 koh fe(oh)2 iii. bir nechta javobli test. [6 ball] 5. berigan tuzlarni nomi bilan juftlang. 1 nacl a xrom(iii)digidrofosfat 2 na2hpo4 b kalsiy gidrosulfat 3 cr(h2po4)3 c natriy gidrofosfat 4 crhpo4 d kalsiy gidrofosfat 5 ca(hso4)2 e …

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