រំលឹកមេរៀនថ្នាក់ទី១២ (២)
Quiz
•
Chemistry
•
12th Grade
•
Hard
Seng Rom
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10 questions
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1.
MULTIPLE SELECT QUESTION
1 min • 1 pt
តើសមាសធាតុណាខ្លះដែលមិនរលាយក្នុងទឹក?
CaCO3
AgNO3
FeCl3
Fe(OH)3
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
រូបមន្ត បាសឆ្លាស់ របស់អាស៊ីត HPO42- គឺ H2PO4-
ត្រឹមត្រូវណាស់
មិនត្រឹមត្រូវ
លើសដែនកំណត់នៃការគិត
3.
MULTIPLE SELECT QUESTION
1 min • 1 pt
សូដ្យូមប៉ាល់មីតាត មានរូបមន្តគីមីៈ CH3 -(CH2)14-COONa
សមាសធាតុនេះជា..............................
អេស្ទែ
សាប៊ូ
អំបិល
អាស៊ីតសរីរាង្គ
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
សមីការគីមីៈ Ba(NO3)2 + H2SO4 -> BaSO4 + 2HNO3
បើគេប្រើ Ba(NO3)2 ចំនួន 0.8mol ចូរគណនាកំហាប់អាស៊ីត H2SO4 ដែលមានមាឌ 600mL។
0.48M
1.33M
13.33M
0.048M
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
រូបមន្តស្ទើរលាតនៃ ប្រូពីលផម្ញ៉ាត គឺ
CH3 -COO -C2H5
H -COO -CH2 -CH3
គ្មានចម្លើយ
H -COO -CH2 -CH2 -CH3
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
សមីការគីមីៈ 2NaOH + H2SO4 -> Na2SO4 + 2H2O
សមីការអុីយ៉ុងសម្រួលនៃប្រតិកម្មៈ
H+ + OH- > H2O
Na+ + SO42- -> Na2SO4
គ្មានចម្លើយ
មិនដឹងទេ
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
pH គឺជាទំហំផ្ទុយនឹងលោការីតគោលដប់នៃកំហាប់ អុីយ៉ុងអុីដ្រុកស៊ីត។
ពិតជាត្រឹមត្រូវ
មិនត្រឹមត្រូវ
មិនដឹង
អត់យល់
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