The complex used as an anti-cancer agent is
mer-[Co(NH3)3Cl3]
cis-[PtCl2(NH3)2]
cis-K2[PtCl2Br2]
Na2[CoCl4]
In the extraction of copper from sulphide ore the metal is formed by reduction of Cu2O with
FeS
CO
Cu2S
SO2
At higher temperature, iodoform reaction is given by
CH3CO2CH3
CH3CO2C2H5
C6H5CO2CH3
CH3CO2C6H5
B.
CH3CO2C2H5
Among all the given options, only CH3COOC2H5 will give ethanol, C2H5OH after hydrolysis (which can give poisitive iodoform test).
CH3COOCH3 CH3COOH + CH3OH
CH3COOC2H5 CH3COOH + CH3CH2OH
C6H5COOCH3 C6H5COOH + CH3OH
CH3COOC6H5 CH3COOH + C6H5OH
Which one of the statements given below concerning properties of solutions, describes a colligative effect?
Boiling point of pure water decreases by the addition of ethanol.
Vapour pressure of pure water decreases by the addition of nitric acid.
Vapour pressure of pure benzene decreases by the addition of naphthalene.
Boiling point of pure benzene increases by the addition of toluene.
Which of the following reactions is used to make a fuel cell?
Cd(s) + 2Ni(OH)3 → CdO(s) + 2Ni(OH)2(s) + H2O(l)
Pb(s) + PbO2(s) + 2H2SO4(aq) → 2PbSO4(s) + 2H2O(l)
2H2(g) + O2(g) →6 2H2O(l)
2Fe(s) + O2(g) + 4H+ (aq) → 2Fe2+(aq) + 2H2O(l)