9 sinf 3-chorak
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9 sinf kimyo fanidan 1 chorak 1. xviii asrda fanda nechta element ma’lum edi? a 60 ta b 90 ta c 20 ta *d 30 ta 2 hozirda davriy sistemada nechta element mavjud? a 111 ta b* 118 ta c 109 ta d 150 ta 3. ionlanish energiyasi … ? *a elektronning atomdan ajralishi b ikki yoki undan ortiq atomlarning o’zaro ta’sirlashuvi c zaruruiy energiya miqdori d a,c javoblar to’g’ri 4.oksidlanish nima? a ionlanish energiyasi b elektronning atomdan ajralishi *c electron berish jarayoni d to’g’ri javob yo’q 5.uglerod guruhi elementlariga qaysi elementlar kiradi *a. c si b. ge sn c. po d. barcha javoblar to’g’ri 6. uglerod tabiatda qanday holatda uchraydi? a sof holatda b karbonat minerallari sifatida c karbin …
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