1.Agar normal sharoitda 21,3 gr gaz 6,72 / hajmni egallasa,
shu gazning molekulyar massasini aniqlang?
A) 71 B) 32 C) 28 D) 64 2. Massasi 900 gr bo‘lgan suvdagi molekulalar sonini
hisoblang.
A) 3,01-W5 B) 12,04-W4 C) 3,34-W5 D) 6,02-W6 3. 3,01-1023 ta vodorod molekulasi n.sh.da qancha hajmni
(1, n.sh.) egallaydi?
A) 11,2 B) 22,4 C) 33,6 D) 44,8 4. 0,5 mol kislorodning atomlar sonini ko‘rsating?
A) 6,02-W3 B) 3,01-W3 C) 12,04-W3 D) 1 5. Tarozi pallasini o‘ng tomonida 12,04-1023 ta uglerod
atomi, chap tomonida esa 6,02-1023 ta II valentli metall
atomi mavjud, agar shu holatda tarozi pallalari muvozanatga
kelgan bo‘lsa, metallni aniqlang?
Ca B) Cd C) Mn D) Mg
6. Agar 0,5 mol silan gazi 16 / hajmni egallasa.
shunday sharoitda 16 g metan qanday hajmni
(1) egallaydi?
A) 12 B) 16 C) 24 D) 32 7. Allotropiya nima?
A) Bir element atomlaridan turli oddiy moddalar hosil bo‘lishi B) Bir molekuladan turli oddiy moddalar hosil bo‘lishi C) Bir murakkab moddadan turli oddiy moddalar hosil bo‘lishi D) Ikki element atomlaridan turli oddiy moddalar hosil bo‘lishi 8. Kimyoviy reaksiyalarda quyidagi parametrlardan qaysi
biri doimo o‘zgarmay qoladi?
A) Bosim B) Hajm C) Harorat D) Massa 9. Molekulasi uchta atomga ega bo'lgan moddani toping.
1) magiy gipoxlorit 2) natriy gipoxlorit
3) natriy xlorat 4) kalsiy perxlorat
5) perxlorat kislota 6) vodorod sulfid
A) 1,3 B) 3,6 C) 1,5 D) 2,6 10. Berilgan yo‘nalishda moddalarning tarkibidagi
elektron, proton va neytronlar yig‘indisi qanday
o‘zgarishini aniqlang?
a) kamayadi b) ortadi d) o‘zgarmaydi
S 0 2 — Si02 –– NO–– N20 ––SiH4
A) 4b, 3b, 2a, la B) 3b, 4a, la, 2a C) 2b, lb, 4b, 3a D) la, 2b, 3b, 4a 11. Suyuqlanish temperaturasi past bo‘lgan
molekulalani belgilang.
A) NaOH, C 0 2, A12Os B) H2, C 0 2, NaCl C) 0 2H2, N2 D) NaOH, A120 3, С 12. Tarkibida massa jihatidan 21,6% natriy, 33,33% xlor
va 45,07% kislorod bo‘lgan modda formulasini toping
A) NaCIO B) NaCIO, C) NaCIO3 D) NaCIO4 13. Alyuminiy sulfat kristallgidrati Al2(SO )3 nH20
tarkibida alyuminiyning massa ulushi 10,34% ga teng
boisa, n ning qiymatini toping.
A) 10 . B) 12 C) 14 D) 16 14. Tashqi elektron qavati faqat s-elektronlarga
ega boigan elementlarni aniqlang.
1) litiy; 2) azot; 3) vodorod;
4) berilliy; 5) geliy; 6) oltingugurt.
A) 1,2,3,4 B) 2,6 C) 1,3,4,5 D) 2,5,6 15. 266 100Fm—>250 94 Ри + ха + у0 -1β . Ushbu yadro reaksiyasi
natijasida 75 mg plutoniy izotopi hosil boisa, qancha
elektron ajralib chiqqan?
A) 4,816 *10 20B) 1,204*10 200 C) 2,408 *10 20D) 3,612*10 200 16. . NaCl 50°C da to'yingan 500 gramm eritmasini 20°C gacha sovutganda cho'kmaga tushadigan tuz massasini hisoblang. S50=37; S20=36 A) 1,0 B) 3,14 C) 3,65 D) 4,45