Kimyo fаnidаn tеsti 6,5 gr vinil аldеgid kmnО

24 Bob vodorod va kislarod olish reaksiyalari
1. 9 gr suv elektroliz qilinganda necha litr ( n sh) gaz hosil bo’ladi ?
A)16,8 B)14,2 C)22,4 D)11,2
2.65 gr ruh xlorid kislotadan necha gr vodorod siqib chiqaradi?
A) 4,48 B)2,24 C) 2 D) 0,2
3.3,6 gr magniy sulfat kislota bilan ta’sirlashganda necha gr tuz hosil bo’ladi?
A)18 gr B)36gr C)42gr D)40gr
4.Kaliy permanganat qizdirilganda 1,568 litr (n sh) gaz chiqdi parchalangan tuzning massasini toping?
A)22,12gr B)15,8 gr C)31,6gr D)42,16gr
5. Eng toza kislorod olish uchun 0,2 mol tuz sariflandi necha gr kislorod ajralib chiqadi
A)1,6gr B) 3,2gr C)4,8gr D)0,16 gr
6.Kaliy nitrat parchalanganda 5,6 litr gaz ajraldi reaksiya natijasida hosil bo’lgan tuzni massasini toping?
A)21,25gr B)10,1gr C)22gr D)8,5gr
7.Necha gr mis (II)nitrat parchalanganda 0,5 mol gaz ajraladi?
A)37,6gr B)18,8gr C)20gr D)16,4gr
25 Bob massa ulushni topishga oid
1.Cu SO_{4 5}H₂O tarkibidagi kislorodni massa ulushini toping?
A) 57,6 % B)44,6% C)60% D)84%
2.Tabiy silikat nefelin (Na₂ {SiHl ₂ O ₈}) tarkibidagi qumning massa ulushini toping?
A)0,211 B)0,423 C)0,253 D)0,336
3. Dalonit minerali tarkibidagi ug’lerodning massa ulushini toping?
A)14,3 % B)13,04 % C)16,05% D)20%
4.Sulfat kislota tarkibidagi kislorodning massa ulushi oltingugurtning massa ulushidan necha marta katta?
A)2 B)3 C)4 D)2,5
5.Temir qosh oksidi tarkibidagi metallning massa ulushini toping?

A)68,4% B)70,42% C)72,4% D)80,6%

6.Glouber tuzidagi suvning massa ulushini toping?
A)56% B)44% C)42% D)58%
26 Bob foiz konsentratsiyaga oid
1. 400 gr suvda 100 gr tuz eritildi eritmani C % toping?
A)25% B)20% C)40% D)35%
2.20 gr tuz 400 gr eritmada eritildi eritmani C% toping?
A)4,76% B)5% C)6,76% D)4,42%
3. 200 gr 40% va 300 gr 60% eritmalar aralashtirildi. Yangi eritmani C% toping?
A)48% B)52% C)46% D)54%
4. 28gr CaO 112 gr suvda eritildi hosil eritmani C% toping?
A)26,42% B)33,33% C)28,4% D)30%
5. 11,5 gr Natriy 400 gr suvda eritildi hosil bo’lgan eritmani C% toping?
A)6,8% B)4,86% C)5,2% D)4,2%
6. 40 gr osh tuzi 160 ml suvda eritildi. Eritmani C% toping?
A)20% B)25% C)30% D)40%
7.200 gr 20% li eritmaga 40gr tuz qo’shildi hosil bo’lgan eritmani C % toping?
A)66,67% B)33,33% C)42% D)57%