8- sinflar uchun test. I – Variant

8- sinflar uchun test. I – Variant.


1. Quyidagi reaksiyalardan qaysi biri birikish reaksiyasiga taluqli.
1)K+H₂O →……. 2)CO₂+CaO→……. 3)NO₂+H₂O+O₂→……. 4)BaCl₂+K₂SO₄→…….
A)4 B)1,2,3 C)2,3 D)1,4
2. 4-guruh elementining vodorodli uchuvchan birikmasi tarkibida 87,5 % E bo’lsa, shu elementni toping.
A)C B)Ge C)Sn D)Si
3. 40 gr marmarni modda miqdorini hisoblang
A)0,6 B)0,4 C)0,67 D)0,71
4. Taxir tuzi deb ataluvchi modda tarkibida 22,76% Mg va S bo’lsa, shu tuz tarkibida necha molekula suv bo’ladi.
A)7 B)6 C)8 D)4
5. Amfoter oksidlar qatorini toping.
A)CaO, ZnO B)Al₂O₃, MnO₂ C)K₂O, Na₂O D)SO₂, CO₂
6. 3-guruh elementining yuqori oksidi tarkibida 31,43% E bo’lsa, elementni toping.
A)Al B)Fe C)Ga D)B
7. 15,68 l quruq muz tarkibidagi kislorod atomlari sonini hisoblang.
A)8,428∙10²³ B)4,214∙10²³ C)6,321∙10²³ D)8,6∙10²³
8. 8,5 gr nomalum modda yonganda 16 gr sulfit angidrid va 4,5 gr vodorod oksid hosil bo’lsa, nomalum modda formulasini toping.
A)NH₃ B)H₂S₂ C)H₂SO₃ D)H₂S
9. 336 l (n.sh da) NH₃ dagi azotning massasini gr toping.
A)255 B)210 C)240 D)170
10. 10 gr Ca qancha so’ndirilgan ohak tarkibida bo’ladi.
A)18.5 B)14 C)25 D)20
11. 0.336 l suvni modda miqdorini toping.
A)0.015 B)0.1 C)18.67 D)55.55
12. 28 gr Fe va 28 gr S o’zaro reaksiyaga kirishganda necha gr FeS hosil bo’ladi.
A)44 B)77 C)60 D)52.5
13. 100 l gaz balonda 40 l vodorod, 30 l vodorod sulfid qolgani is gazidan iborat. Shu gazlarning geliyga nisbatan zichligini toping.
A)19.4 B)4.85 C)9.7 D)5.1
14. Qo’sh tuzni toping.
A)K₂SO₄ B)Cu(OH)₂∙CuCO₃ C)KCl∙NaCl D)Ca(HCO₃)₂
15. 1,8 gr Me 1,6 gr kislorodda oksidlandi. Nomalum metalni toping.
A)Be B)Al C)Cr D)B

8- sinflar uchun test. II – Variant.


1. Anorganik birikmalarning muhim siniflari nechta sinfga bo’linadi.
A)5 B)8 C)3 D)4
2. 40,8 gr H₂S ni hajmini hisoblang. Bosim 120,5 kPa, temperature 57 ^oC ga teng.
A)22,4 B)27,3 C)26,88 D)28,3
3. Glauber tuzi tarkibida 5,59% H bo’lsa,shu tuz tarkibida suv molekulalar sonini toping.
A)10 B)7 C)9 D)8
4. Murakkab modda tarkibida N-35%, H-5%, O-60% bo’lsa, shu birikmani empirik formulasini toping.
A)NH₄NO₃ B)HNO₃ C)NH₄NO₂ D)HNO₂
5. 336 ml (n.sh da) gazning massasi 0,96 gr bo’lsa, shu gazning massasini gr toping.
A)63 B)80 C)64 D)44
6. Hajmi 340 l bo`lgan gazning bosimi 120 kPa ga teng. O`zgarmas temperaturada gazning hajmini 400 l ga keltirish uchun qanday bosim kerak bo`ladi?
A) 102 kPa B) 104 kPa C) 120 kPa D) 90 kPa
7. Geliyga nisbatan zichligi 7 va 8 bo’lgan moddalarni ko’rsating.
1) uglerod(II)oksid, 2) azot(II)oksid, 3) azot, 4) ammiak, 5) uglerod(IV)oksid
6) azot(IV)oksid, 7) kislorod
A) 3,5,7 B) 1,3,7 C) 1,3,5 D) 2,4,6
8. Azot va vodoroddan iborat aralashmadagi azotning hajmiy ulushi 10,5% bo’lsa, 25 g shunday aralashmadagi vodorodning massasini hisoblang.
A) 9,5 B) 22,4 C) 15,5 D) 2,6
9. Oltingugurt (IV)-oksidning normal sharoitdagi zichligini hisoblang.
A) 3,15 B) 2,857 C) 4,569 D) 1,29
10. Geliyga nisbatan zichligi 11 bo’lgan gazning molyar massasini hisoblang.
A) 44 B) 36 C) 64 D) 29
11. 4,015 gr vodorod xloridni 50°C dagi hajmi 10 l bo’lsa bosimni toping.
A) 22,4 B) 101,325 C) 29,5 D) 30,78
12. 20 l CO ning 130°C va 210 kPa da (n.sh) hajmini toping.
A) 22,4 B) 6,72 C) 28 D) 56
13. Modda miqdori teng bo’lgan vodorod va kislorod aralashmasining havoga nisbatan zichligini aniqlang.
A) 0,29 B) 0,586 C) 2,126 D) 1,32
14. 17 gr PH3 ni 140 kPa bosim va 227 °C dagi hajmini (l) toping.
A) 16,7 B) 14,84 C) 10,96 D) 11,2
15. 2,09 gr gaz 95,7402 kPa va 42°C da 950 ml hajmni egallaydi. Shu gazning havoga nisbatan zichligini va molеkulyar massasini hisoblang.
A) 2,07 ; 60 B) 3,6 ; 80 C) 1,05 ; 20 D) 2,28 ; 64