Compound with the general formula CnH2n+2 belong to the_______ group
alkanal
alkane
alkanoate
alkene
alkyne
Correct answer is B
Alkanes have the general formula of CnH2n+2 where n is the number of carbon atoms.
Alkenes have the general formula CnH2n.
The general formula for Alkynes is CnH2n-2.
The process involved in the decomposition of sugar by an enzyme is called
dehydration
esterification
fermentation
polymerization
saponification
Correct answer is C
No explanation has been provided for this answer.
Which of the following equations is NOT balanced?
CH4(g) + 202(9) → CO2(g) + 2H2O(g)
CU(S) + HNO3(aq) → Cu(NO3)2(aq) + 4H2O(I) + NO(g)
2KCIO3(s) → 2KCI(s)+ 3O2(g)
NaH(s) + H2O(1) → NaOH(aq) +H2(g)
Na2SO4(aq) + BaCl2(aq) → BaSO4(s) + 2NaCl(aq)
Correct answer is B
No explanation has been provided for this answer.
A colourless gas with characteristics odour which dissolves in water to form an alkaline solution is
ammonia
carbon(IV)oxide
hydrogen chloride
sulphur (IV) oxide
sulphur (VI) oxide
Correct answer is A
No explanation has been provided for this answer.
In which of the following equations can Le-chartelier’s principle be applied?
H2(g)+S(g) → H2(g)
2H2S(g) + O2 (g) → 2H2O(l) + 2SO2(g)
N2(g) +3H2(g) ⇌ 2NH3(g)
NaOH(aq) +CO2(g) → Na2CO3(aq) + H2O(l)
S(s) + 02(g) → SO2(g)
Correct answer is C
According to Le Chatelier's Principle, this will be favored if you lower the temperature. The system will respond by moving the position of equilibrium to counteract this - in other words by producing more heat. To get as much ammonia as possible in the equilibrium mixture, you need as low a temperature as possible