atomic number of elements increases
atomic mass of elements increases
electropositive character of elements increases
electronegative character of elements increases
number of electrons in the outermost orbits of element increases
Correct answer is C
No explanation has been provided for this answer.
When a piece of charcoal enclosed in a cylinder containing air is ignited
the toatl volume of air is increased
the relative amount of oxygen present is increased
the relative amount of nitrogen present is decreased
the relative amount of carbondioxide present is increased
the ratio of oxygen to nitrogen in the system is increased
Correct answer is D
No explanation has been provided for this answer.
N2O2
NO
NO2
N2O
N2O3
Correct answer is C
No explanation has been provided for this answer.
Sulphur hydrogen
Hydrogen oxygen
Oxygen Hydrogen
Hydrogen sulphate ions
Sulphur oxygen
Correct answer is C
Dissociation of sulfuric acid,
\(H_2SO_4→2H^+_{(aq)}+SO^{−2}_{4(aq)}\)
Dissociation of water,
\(H_2O→H^+_{(aq)} + OH^−_{(aq)}\)
At Anode : \(4OH^−→2H_2O_{(l)} + O_{2(g)} + 4e_{−}\)
At Cathode : \(2H^+_{(aq)} + 2e^− → H_{2(g)}\)
66
33
10
20
30
Correct answer is E
solubility = \(\frac{solute x 100}{solvent}\)
The solubility of KClO3 at 66oC will be \(\frac{12}{40} \times \frac{100}{1}\)
= 30