2018 yil 10-sinf KIMYO OLIMPIADA
III tur.
10sinf. KIMYO. TEST.
I variant
1
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A
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2
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B
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3
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D
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4
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B
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5
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B
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6
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A
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7
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A
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8
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B
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9
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A
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10
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B
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11
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B
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12
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C
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13
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A
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14
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D
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15
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C
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16
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C
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17
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B
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18. 336,33g.
19. Marganes.
20. Insektisid.
21. Koks gazi.
22. M.N. Nabiyev.
23. S. V. Lebedov.
24. 4 mol.
25. K2Cr2O7 +6KJ + 7H2SO4 = 3J2+ Cr2(SO4)3 + 4K2SO4 + 7H2O; yig’indi - 15
2018 10 sinf I I variant
1
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B
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2
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A
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3
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A
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4
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B
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5
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B
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6
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D
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7
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B
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8
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C
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9
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A
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10
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A
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11
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B
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12
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B
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13
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C
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14
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A
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15
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A
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16
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A
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17
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D
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18. CaSO4 ;CaCl2 ; MgSO4; MgCl2
19. Gazdan polimer materiallar – polietilen, polivinilxlorid olish mumkin.
20. Tarkibida, asosan, suyuq uglevodorodlar bo’ladigan neft - parafin asosli, qattiq uglevodorodlar bo’ladigan neft esa asfalt asosli neft deb ataladi.
21.Inson tanasining 99,4% ini H; O; C; N; Ca tashkil etadi. Ularning barchasi makrobiogen elementlar deb ataladi
22. X.T.Sharipov.
23. Kauchukni oltingugurt bilan qizdirib, rezinaga aylantirish jarayoni.
24. 4mol.
25. 10NaCl + 2KMnO4 + 8H2SO4 = K2SO4 + 5Na2SO4 + 2MnSO4+ 5Cl2 + 8H2O; yig’indi – 41.)
2020 yil Kimyo 9-sinf Javoblar 1-variant
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3
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4
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5
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6
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7
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8
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9
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10
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11
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12
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13
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14
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15
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C
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B
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A
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B
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D
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D
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D
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A
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A
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C
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A
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C
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B
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A
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B
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16
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17
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|
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C
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C
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18. Mishyak
19. 4
20. 4NH3 + 5O2 = 4NO+6 H2O 2NO+O2 =2NO2 4NO2+O2+2H2O =4HNO3 21. V2O5 22. 9:18 23. Abu Bakr Muhammad ibn Zakariyo ar-Roziy. 24. 1,6 va 38,4
25. K2Cr2O7 +6KJ + 7H2SO4 = 4K2 SO4 + Cr2(SO4)3 + 3J2+7H2O (15)
Kimyo 9-sinf Javoblar 2-variant
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2
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3
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4
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5
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6
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7
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8
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9
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10
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11
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12
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13
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14
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15
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A
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B
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B
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D
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B
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A
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D
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C
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B
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A
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D
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A
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B
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D
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D
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16
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17
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C
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B
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18. Сu
19. CrCl2 va H2
20. 196
21. 66,336x10-24g
22. S-oksidlovchi, oksidlanish darajasi 0 dan -2 kamayadi
23.Flotatsiya - qattiq jismlarni suyuqlik sirtiga qalqib turishi
24. Zn, CaO, Cu(OH)2, Na2S
25. 3H2O2+2CrCl3+10KOH2K2CrO4+6KCl+8H2O (yig’indi-15)
2020 yil 10-sinf KIMYO OLIMPIADA
III tur.
10-sinf. KIMYO. TEST.
I variant
1
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2
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3
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4
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5
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6
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7
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8
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9
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10
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11
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12
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13
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14
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15
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16
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17
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B
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D
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B
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C
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A
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B
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B
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C
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A
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D
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A
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C
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A
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A
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C
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A
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C
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18. CaSO4 ;CaCl2 ; MgSO4; MgCl2
19. Gazdan polimer materiallar – polietilen, polivinilxlorid olish mumkin.
20. Tarkibida, asosan, suyuq uglevodorodlar bo’ladigan neft - parafin asosli, qattiq uglevodorodlar bo’ladigan neft esa asfalt asosli neft deb ataladi.
21.Inson tanasining 99,4% ini H; O; C; N; Ca tashkil etadi. Ularning barchasi makrobiogen elementlar deb ataladi
22. X.T.Sharipov.
23. Kauchukni oltingugurt bilan qizdirib, rezinaga aylantirish jarayoni.
24. 4mol.
25. 10NaCl + 2KMnO4 + 8H2SO4 = K2SO4 + 5Na2SO4 + 2MnSO4+ 5Cl2 + 8H2O; yig’indi – 41.)
2020 yil 10 sinf 2- variant
1
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2
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3
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4
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5
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6
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7
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8
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9
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10
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11
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12
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13
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14
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15
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16
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17
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B
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B
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A
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A
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B
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A
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B
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C
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C
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A
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C
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D
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A
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C
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A
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A
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B
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18. MnO2.
19. Marganes.
20. Insektisid.
21. 9,03 ∙1023.
22. M.N. Nabiyev.
23. 49
24. Ebonit.
25. K2Cr2O7 +6KJ + 7H2SO4 = 3J2+ Cr2(SO4)3 + 4K2SO4 + 7H2O; yig’indi - 15
2020 yil 11-sinf . KIMYO. TEST.
I variant.
1
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2
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3
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4
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5
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6
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7
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8
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9
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10
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11
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12
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13
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14
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15
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16
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17
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D
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C
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D
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A
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B
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A
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A
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B
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A
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D
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D
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D
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A
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B
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C
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B
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D
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18. trietilselluloza
19. 24
20. 1,75
21. Amalgamalar .
22. 50,4 г
23. Chumoli kislota. Муравьиная кислота
24. 1:2,4
25. 10.
II variant
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2
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3
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4
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5
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6
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7
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8
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9
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10
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11
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12
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13
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14
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15
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16
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17
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B
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C
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D
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A
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C
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D
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B
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B
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D
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B
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C
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B
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B
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A
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B
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D
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A
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18. 40%
19. MnO2
20. K4[Fe(CN)6] Markaziy atom Fe. Valentligi. VI Oksidlanish darajasi +2
21. Selluloza. Целлюлоза
22. С2H4
23. Aldegid. Альдегид.
24. ………. ikki molekula glukoza. …….. две молекулы глюкозы
25. 2
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