11. 1 kg massali suvni 1 ̊ C ga isitish uchun qanday miqdorda issiqlik sarfalnadi ?
A) 4200 kJ B) 4200 J C) 2100 J D) aniqlab bo’lmaydi
12. 1 J/kg – qanday kattalikning o’lchov birligi ?
A) moddaning issiqlik sig’imi B) moddaning solishtirma issiqlik sig’imi
C) issiqlik miqdori D) yoqilg’ining solishtirma yonish issiqligi
13. Qancha toshko’mir yonganda 5 800 000 J issiqlik ajraladi ? Toshko’mir uchun solishtirma yonish issiqligi 2,9∙107 J/kg.
A) 2 kg B) 200 kg C) 20 g D) 200 g
14. Gaz molekulalarining tezliklarini kim birinchi bo’lib tajribada o’lchagan ?
A) J. Maksvell B) Klapeyron C) Mendeleyev va Klapeyron D) O. SHtern
15. Adiabatik jarayon uchun termodinamikaning I – qonuni qanday ko’rinishga ega ?
A) U1=U2+A B) U2=U1+A C) A=ΔU D) ΔU=U2-U1 16. Moddaningsolishtima issiqlik sig’imini aniqlashda qaysi asbobdan foydalaniladi ?_________
17. Termodinamikaning birinchi qonuni formulasini yozing ____________________
18. Gazlarning universal doimiysiqanchaga teng ? ____________________ J/K∙mol
19. Gazning temperaturasini o’zgartirmagan holda bosimini 3 marta oshirish uchun hajmini qanday o’zgartirish kerak ? ____________________________
20. 297 K temperaturani ̊ C hisobida ifodalang ___________________
Javoblar:
№
№
№
1
A
8
C
15
A
2
C
9
B
16
Kalorimetr
3
B
10
C
17
Q=A+ΔU
4
D
11
B
18
8,31
5
D
12
D
19
3 marta kamaytirish
6
B
13
D
20
24
7
A
14
D
II – variant 1. Yoqilg’ining solishtirma yonish issiqligi xalqaro birliklar sistemasida qanday birlikda o’lchanadi ?
A) K B) J/K∙mol C) J/K D) J/kg
2. Ideal gazning hajmi 2,25 marta izobarik kamaytirilsa, uning temperaturasi necha marta o’zgaradi ?
A) 1,5 marta kamayadi B) 2,25 marta kamayadi C) 1,5 marta ortadi D) 2,252 marta kamayadi
