Fizika 7- sinf I- chorak i-variant

2. Ideal gaz haroratining 2 marta ko`tarilishi xajm birligidagi molekulalar sonining
2 marta kamayishiga olib kelgan bo`lsa, uning bosimi qanday o`zgaradi?
A) o`zgarmaydi B) 2 marta kamayadi C) 4 marta ortadi D) 4 marta kamayadi E) 2 marta oshadi
3. 0⁰C temperaturadagi 9 kg suvga 0⁰ C temperaturadagi 7 kg muz solinsa,
muzning qancha qismi eriydi?
A) umuman erimaydi B) xammasi eriydi C) 1 kg eriydi D) 2 kg eriydi E) 3 kg eriydi
4. Rasmda qanday jarayon aks ettirilgan, bosimlar munosabatini ko`rsating
A) izobarik P₁ < P₂ < P₃ B) izoxorik P₁ < P₂ > P₃ C) izotYermik P₁ > P₂ < P₃ D) izobarik P₁ > P₂ > P₃
E) izoxorik P₁ < P₂ < P₃
5. Quyidagi keltirilgan formulalardan Mendeleyev Klayperon tenglamasini ko`rsating?
1 2
A) PV = RT B) PV = m/MRT C) pv/t=const D) p=−− nm₀ u² E) p= − n E _k
2 3
6. Kislorodning 1 ta molekulasining massasini hisoblang.
A) 32∙10^-26kg B) 32∙10^-26g C) 5,3 ∙10 ^-26kg D) 5,3∙10 ^-26g E) 6, 02 ∙ 10^-26kg
7. Ochiq idishdagi 20⁰ C temperaturali gazning zichligini 2 marta kamaytirish uchun uning temperaturasini qanchaga orttirish kerak?
A) 293 ⁰ C B) 193 ⁰ C C) 273 ⁰ C D) 253 ⁰ C E) 20 ⁰ C
8. Molekular kinetik nazariyaning asosiy tenglamasini ko`rsating
A) p = 1/3 n m ₀ u B) p=2/3n E_k C) p= 1/3p v ² D) n=N/V E) E = mv²/2
9. Rasmda qanday jarayon aks ettirilgan. hajmlar munosabatini ko`rsating?
A) Izobarik V₁ > V₂ < V₃ B) izoxarik V₁ > V₂ > V₃
C) izotermik V₁ < V₂ < V₃ D) izobarik V₁ < V₂ >V₃
E) izoxorik V₁ < V₂ < V₃