Kimyo 7-sinf test monitoring.
-
K2CO3 moddadagi C ning % miqdorini aniqlang ?
-
9.3 % B) 8,7 % C) 10.2% D) 15 %
-
Al (OH)3 + H2SO4Al2(SO4)3 + H2O .Ushbu reyaksiada suvning oldidagi koyfitsentni aniqlang.
-
3 B) 6 C) 1 D) 10
-
Modda massasining saqlanish qonunini qaysi olim ifodalab bergan.
-
Boyl B) Lomonosov C) Dalton D) Avogadro
-
Atomlarni o’lchami qancha atrofida bo’ladi. (Angstrem)
-
1 A B) 10 A C) 100 A D ) 50 A
-
Avogadro doimiysini aniqlang.
-
6.02 *1023 B) 1.5*1023
-
C) 12.04 *1023 D) 9.03*1023
-
Modda tarkibini doimiylik qonunini qaysi olim kashf etgan .
-
Lomonosov B) Prust C) Dalton D ) Avogadro
-
1,5 mol O3 ning massasini gramlarda hissoblang.
-
48 B) 72 C) 24 D) 32
-
Har qanday gazning 1 moli normal sharoitda ………….. litr hajimni egallaydi.
-
5.6 litr B) 33.6 litr
-
C) 22.4 litr D) 11.2 litr
-
2 mol suvning H2O massa sini gramlarda hissoblang.
-
18 B) 36 C) 54 D) 8
-
Na2SO4 tarkibidagi S oltingugurt ni % miqdorini aniqlang.
-
12.5 % B) 22.5 %
-
C) 14.2 % D) 18 %
-
6.4 gram SO2 dagi modda miqdori molini toping.
-
0.5 mol B) 0.3 mol
-
C) 0.4 mol D) 0.1 mol
-
Ca(OH)2 +H3PO4Ca3(PO4)2 +H2O reaksiyadagi suvni H2O oldidagi koifitsentni aniqlang.
-
1 B) 4 C) 6 D) 2
-
H3PO4 ning molekulyar massasini Mr hissoblang.
-
98 gr/mol B) 68 gr/mol C) 88 gr/mol D) 74 gr/mol
-
Na va Al ning valentligini belgilang.
-
1 va 4 B) 1 va 3
-
C) 2 va 5 D) 3 va 6
-
Quyidagilardan eng yengil massali gazlarni belgilang.
-
SO2 va NH3 B) SO3 va H2S
-
C) O2 va N2 D) H2 va He
Do'stlaringiz bilan baham: |