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Test-Chimie
Quiz
•
Chemistry
•
10th Grade
•
Practice Problem
•
Hard
DraAn Ra
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25 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
Formula generala a alcanilor este...
CnHn+2
CnH2n
CnH2n+2
CnH2n-2
CnH2n+1
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Oxidarea completa/totala se mai numeste...
SATURARE.
ARDERE.
OXIGENARE.
DEHIDROGENARE.
3.
MULTIPLE SELECT QUESTION
45 sec • 1 pt
Bifati afirmatiile corecte. (nu e numai una)
Omologii C2H6 formeaza la monohalogenare amestec de derivati monohalogenati izomeri.
Punctele de fierbere/topire cresc cu cresterea numarului de atomi de C.
Alcanii au de 3 ori mai multi atomi de H decat alchenele.
CH3-Cl este clorura de metilen.
4.
MULTIPLE SELECT QUESTION
45 sec • 1 pt
Bifati afirmatiile false. (nu e numai una)
Reactivitatea alcanilor este mare.
Halogenarea consta in introducerea halogenului in molecula unei substante.
CH3-CH=CH2 se numeste 2-propena.
Alcanii cu un numar de cel putin 17 atomi de C sunt solizi.
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
1 Kcal (Kilo-calorie)=...
4,5 KJ (Kilo-Joule)
4,125 KJ
4,185 KJ
5 KJ
0 KJ
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
In ce interval/conditii de temperatura are loc cracarea?
200-400 grade Celsius
400-600 grade Celsius
260-870 grade Celsius
400-650 grade Celsius
7.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
In urma cracarii se obtin...
alcani+alchene
alchene+CO2
alchene+H2
alchene
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