donating lone pair of electrons
gaining an electron
losing an electron
sharing an electron
sharing a lone pair of electrons.
Correct answer is B
Chlorine is a non-metal and non-metals ionize by gaining electron(s)
Avogadro’s
Boyle’s
Charles’
Faraday’s
Graham’s
Correct answer is B
No explanation has been provided for this answer.
The type of reaction ethyne mainly undergoes is
addition
carboxylation
esterification
saponification
substitution
Correct answer is A
No explanation has been provided for this answer.
1
0.25
0.05
0.025
0.01
Correct answer is D
no of mole in 250\(cm^3\) of its solution is about molar concentration.
using n = cv
c = \(\frac{n}{v}\)
where c = molar concentration, n = number of moles and v = volume in \(dm^3\)
number of mole of NaHCO3 = mass of NaHCO3 / molar mass of NaHCO3 = \(\frac{8.4}{84}\) = 0.1moles
but v = 250\(cm^3\) = 250/1000 = 0.25\(dm^3\)
therefore c = 0.25 x 0.1 = 0.025mol\(dm^3\)
In the reaction 2H2S(g) + SO2(g) → 2H2SO(I)+3S(s)SO2is acting as _agent
a bleaching
a dehydrating
an oxidizing
a precipitating
a reducing
Correct answer is C
No explanation has been provided for this answer.