I and II
I and III
I and IV
II and III
II and IV
Correct answer is B
No explanation has been provided for this answer.
The best way to distinguish between Na2CO3and NaHCO2 is by.
adding an acid.
adding an alkali.
dissolving in water.
exposing to air.
heating
Correct answer is E
No explanation has been provided for this answer.
The Kinetic theory can NOT be used to explain
allotropy
Brownian movement.
diffusion
Tyndal effect.
vaporization
Correct answer is A
No explanation has been provided for this answer.
The molar mass of a compound X is 56. its empirical formula is CH2. X is
butene
butyne
ethene
propene
propyne
Correct answer is A
\((CH_{2})x = 56\)
\((12 + 2)x = 56\)
\(14x = 56\)
\(x = \frac{56}{14}\)
\(x = 4\)
Hence, the empirical formula is \((CH_{2}) \times 4\)
= \(C_{4}H_{8}\)
Which compound will have the lowest boiling point?
CH3OH
CH3COOH
CH3CHOH
C4H10
(CH3)3CH
Correct answer is D
No explanation has been provided for this answer.