kimyo fanidan 9-sinflar uchun olimpiada test savollari i-variant
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9-sinflar uchun i-tur olimpiada savollari aim.uz kimyo fanidan 9-sinflar uchun olimpiada test savollari i-variant 1.reaksiyaning temperatura koeffisiyenti 3ga teng. reaksiya tezligini 27 marta oshirish uchun temperaturani necha marta oshirish kerak? a) 10 b) 20 c)30 d)40 2.quyidagi n2+o2=2no-q muvozanatni chap tomonga siljitish uchun qaysi omillardan foydalanish kerak? a)temperaturani pasaytirish b)bosimni oshirish c)temperaturani orttirish d)no konsentratsiyasini kamaytirish 3. 40 g 4% li eritma hosil qilish uchun necha g tuz va suv kerak? a)2.5 va37.5 b)5 va 35 c)0.4 va 39.6 d)1.6 va 38.4 4. kislatani qanday suyultirish kerak? a)kislatsaga oz-ozdan suv quyiladi b)suvga oz-ozdan kislata idish devori bo`ylab quyiladi c)bir idishga avval kislata keyin suv quyiladi d)hamma javob to`g`ri 5.fa...
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