MAH-MHT CET (PCM/PCB) entrance exam Question Bank Solutions

The equation that represent general van't Hoff equation is ______.

An element having electronic configuration 1s² 2s² 2p⁶ 3s² 3p⁶ 4s¹ forms ______.

High concentration of which of the following in the atmosphere leads to stiffness of flower buds which eventually fall off from plants?

Mark the oxide which is amphoteric in character.

Identify the invalid equation.

For which among the following equimolar aqueous solutions Van't Hoff factor has the lowest value?

\[\ce{A -> B}\], ∆H = −10 kJ mol⁻¹, E_a(f) = 50 kJ mol⁻¹, then E_a of \[\ce{B -> A}\] will be ______.

What is the amount of water formed by the combustion of 1.6 g methane?

Identify the element that forms amphoteric oxide.

What is the energy associated with first orbit of Li²⁺ (R_H = 2.18 × 10^-18)?

In hydrogen atom, transition from the state n = 6 to n = 1 results in ultraviolet radiation. Infrared radiation will be obtained in the transition ______.

How many moles of helium gas occupies 22.4 Lat 0°c and at 1 atmospheric pressure?

When the enthalpy of combustion of carbon to carbon dioxide is - 360 kJ mol^-1, then the enthalpy change for the formation of 18 g of CO₂ from carbon and dioxygen at the same temperature in kJ will be ______.

The ratio between the root mean square velocity of H₂ at 50 K and that of O₂ at 800 K is ______.

What is enthalpy of formation of NH₃ if bond enthalpies as (N ≡ N) = - 941 kJ/mol.

\[\ce{(H - H)}\] = 436 kJ/mol and \[\ce{(N - H)}\] = 389 kJ/mol?

The enthalpy change that accompanies a reaction in which 1 mole of its standard state is formed from its elements in their standard states

Solubility product of AgBr is 4.9 × 10^-13. What is its solubility?

What is the energy of an electron in stationary state corresponding to n = 2?

What will be the formula of an oxide of iodine (atomic mass = 127) which contains 25.4 g of iodine and 8g of oxygen?

When 0.5 gram of sulphur is burnt to form SO₂, 4.6 kJ of heat liberated. Calculate enthalpy of formation of SO₂(g). (Atomic mass : S = 32, O = 16)