A liquid was mixed with ethanol and a drop of concentrated H2SO4 was added. A compound with a fruity smell was formed. The liquid was:
CH3OH
HCHO
CH3COCH3
CH3COCH3
In which of the following arrangements, the sequence is not strictly according to the property written against it?
CO2< SiO2< SnO2< PbO2: increasing oxidising power
HF< HCl < HBr < HI : increasing acid strength
NH3< PH3< AsH3< SbH3: increasing basic strength
NH3< PH3< AsH3< SbH3: increasing basic strength
Identify the incorrect statement among the following
Ozone reacts with SO2 to give SO3
Silicon reacts with NaOH(aq) in the presence of air to give Na2SiO3 and H2O
Cl2 reacts with excess of NH3 to give N2 and HCl
Cl2 reacts with excess of NH3 to give N2 and HCl
Which of the following statements is true?
H3PO3 is a stronger acid than H2SO3
In aqueous medium HF is a stronger acid than HCl
HClO4 is a weaker acid than HClO3
HClO4 is a weaker acid than HClO3
What products are expected from the disproportionation reaction of hypochlorous acid?
HClO3 and Cl2O
HClO2 and HClO4
HCl and Cl2O
HCl and Cl2O
The molecular shapes of SF4, CF4 and XeF4 are
the same with 2,0 and 1 lone pairs of electrons on the central atom, respectively
the same with 1, 1 and 1 lone pair of electrons on the central atoms, respectively
different with 0, 1 and 2 lone pair of electrons on the central atoms, respectively
different with 0, 1 and 2 lone pair of electrons on the central atoms, respectively
The number of hydrogen atom(s) attached to phosphorus atom in hypophosphorous acid is
zero
Two
one
one
The correct order of the thermal stability of hydrogen halides (H – X) is
HI > HBr > HCl > HF
HF > HCl > HBr > HI
HCl < HF > HBr < HI
HCl < HF > HBr < HI
B.
HF > HCl > HBr > HI
Heating an aqueous solution of aluminium chloride to dryness will give
AlCl3
Al2Cl6
Al2O3
Al2O3