HSC Science (Electronics) इयत्ता १२ वी - Maharashtra State Board Important Questions

If unit of rate constant is mol dm⁻³s⁻¹, the order of reaction would be ______.

For the reaction A + B → P.

If [B] is doubled at constant [A], the rate of reaction doubled. If [A] is triple and [B] is doubled, the rate of reaction increases by a factor of 6. Calculate the rate law equation.

The half-life period for the first order reaction is 1.7 hrs. How long will it take for 20% of the reactant to disappear?

Describe anomalous behaviour of oxygen as compared with other elements of group 16 with reference to -
(a) Magnetic property                                        
(b) Oxidation state
(c) Hydrides

Describe anomalous behaviour of fluorine with the other elements of group 17 wilh reference to :

(a) Hydrogen bonding

(b) Oxidation state

(c) Polyhalide ions

Arrange the following oxyacids of chlorine - HClO, HClO₂, HClO₃, and HClO₄ with respect to increasing order of thermal stability.

What happens when thin copper leaves are thrown in jar containing chlorine?

What is the action of chlorine (Cl) on the following:

Cold and dilute caustic soda

What is the action of chlorine (Cl) on the following:

Hot and concentrated caustic soda

What is the action of chlorine (Cl) on the following:

Potassium bromide solution

Write electronic configuration and two uses of neon. (Z = 10)

Write any two uses of Chlorine.

Write the electronic configuration of the following element:

Krypton (Z = 36)

What is the action of chlorine on CS₂

Answer the following.

What is the action of chlorine on Excess NH₃.

Write any ‘four points’ of difference between fluorine and other halogens.

Which of the following compounds of chlorine is used as refrigerant? 

Which of the following has the highest electron gain enthalpy?

Ozone layer is depleted by ______.

In interhalogen compounds, which of the following halogens is never the central atom?