Define equivalent mass.

Distinguish between oxidation and reduction.

Calculate the molar mass of the following compounds. 
i) urea [CO(NH₂)₂]
ii) Acetone [CH₃ COCH₃]
iii) Boric Acid [H₃ BO₃]
iv) Sulphuric  Acid [H₂ SO₄]

Calculate the molar mass of the following compounds.
Boric Acid [H₃ BO₃]

Calculate the average atomic mass of naturally occurring magnesium using the following data.

Isotope	Istopic atomic mass	Abundance(%)
Mg24	23.99	78.99
Mg25	24.99	10.00
Mg26	25.98	11.01

Balance the following equations by ion electron method.
\({ Na }_{ 2 }{ S }_{ 2 }{ O }_{ 3 }+{ I }_{ 2 }\longrightarrow { Na }_{ 2 }{ S }_{ 4 }{ O }_{ 6 }+NaI\)

Balance the following equations by oxidation number method - \({ K }Mno_{ 4 }+{ Na }_{ 2 }{ So }_{ 3 }\longrightarrow { MnO }_{ 2 }+{ Na }_{ 2 }{ So }_{ 4 }+KOH\)

Balance the following equations by oxidation number method - \(Cu+{ HNO }_{ 3 }\longrightarrow Cu\left( { No }_{ 3 } \right) _{ 2 }+{ No }_{ 2 }+{ H }_{ 2 }O\)

Calculate the oxidation number of underlined atoms of the following:
ClO₃^-

What is the equivalence factor (n) for K₂Cr₂O₇

The density of carbon dioxide is equal to 1.977 kg m^-3 at 273 K and 1 atm pressure. Calculate the molar mass of CO₂

Calculate the relative molecular mass of the following
(i) Ethanol(C₂H₅OH)
(ii) Potassium permanganate (KMnO₄)
(iii) Potassium dichromate (K₂Cr₂O₇)
(iv) Sucrose (C₁₂H₂₂O₁₁)

What do you understand by the terms acidity and basicity ?

Define matter. What are the types of matter?

What is meant by Plasma state? Give an example.

Distinguish between a molecule and a compound.

Calculate the number of moles present in 60 g of ethane.

How many moles of hydrogen is required to produce 20 moles of ammonia?

Calculate the amount of water produced by the combustion of 32 g of methane.

If 10 volumes of H₂ gas react with 5 volumes of O₂ gas, how many volumes of water vapour would be produced?

Define orbital ? what are the n and 1 values for 3p_x and 4d_x²-y² electron ?

The stabilisation of a half filled d - orbital is more pronounced than that of the p-orbital why?

How many radial nodes for 2s, 4p, 5d and 4f orbitals exhibit? How many angular nodes

Which quantum number reveal information about the shape, energy, orientation and size of orbitals?

How fast must a 54g tennis ball travel in order to have a de Broglie wavelength that is equal to that of a photon of green light 5400\(\overset { 0 }{ A } \) ?

For each of the following, give the sub level designation, the allowable m values and the number of orbitals
(i) n = 4, l = 2
(ii) n = 5, l = 3
(iii) n = 7, l = 0

Give the electronic configuration of Mn²⁺ and Cr³⁺

Consider the following electronic arrangements for the d⁵ configuration.
(a)

\(\upharpoonleft \downharpoonright \)

\(\upharpoonleft \downharpoonright \)

\(​​\upharpoonleft \)

(b)

\(​​\upharpoonleft \)

\(​​\upharpoonleft \)

\(​​\upharpoonleft \)

\(\upharpoonleft \downharpoonright \)

(c)

\(​​\upharpoonleft \)

\(​​\upharpoonleft \)

\(​​\upharpoonleft \)

\(​​\upharpoonleft \)

\(​​\upharpoonleft \)

which of these represents the ground state

Write a note on Thomson's plum pudding model of an atom.

What did Rutherford's alpha ray scattering experiment prove

An atom of an element contains 35 electrons and 45 neutrons. Deduce
(i) the number of protons
(ii) the electronic configuration for the element
(iii) All the four quantum numbers for the last electron

Why Pauli exclusion principle is called exclusion principle?

Bring out the similarities and dissimilarities between a 1s and 2s orbital.

What is the angular momentum of an electron in
(i) 2s orbital
(ii) 4f orbital?

Draw the shapes (boundary surfaces) for the following orbitals.
(i) 2p_x
(ii) 3d_z2 
(iii) 3d_x2_y2

Energy of an electron in hydrogen atom in ground state is -13.6 eV. What is the energy of the electron in the second excited state?

Explain about theory of electromagnetic radiation.

How many orbitals are possible in the 3^rd energy level?

Calculate the total number of angular nodes and radial nodes present in 4p and 4d orbitals.

What are degenerate orbitals?