Chemistry Test ...

Consider the following statement in respect of zero order reaction.
I. The rate of the reaction is independent of reactant concentration.
II. The rate of the reaction is independent of temperature.
III. The rate constant of the reaction is independent of temperature.
IV. The rate constant of reaction is independent of reactant concentration.
Choose the correct statements/s

The main oxides formed on combustion of Li, Na and K in excess of air are respectively:

Which of the following reactions can be used to change benzaldehyde to cinnamic acid?

Which of the following is not a characteristic property of chemical equilibrium?

How many optical isomer will the tartaric acid show?

A certain metal when irradiated by light $\left(r=3.2\times {10}^{16} Hz\right)$ emits photoelectrons with twice kinetic energy as did photoelectrons when the same metal is irradiated by light $\left(r=2.0\times {10}^{16} Hz\right).$ Then of metal is

0.005 M acid solution has 5 pH. The percentage ionisation of acid is

When phenolic ether is heated with HI, it yields