Chemistry

• Chapter 1: Fundamentals of Chemistry. Notes and past questions on Fundamentals of Chemistry for NEB Class 11 Chemistry.
• Chapter 2: Stoichiometry. Notes and past questions on Stoichiometry for NEB Class 11 Chemistry.
• Chapter 3: Atomic Structure. Notes and past questions on Atomic Structure for NEB Class 11 Chemistry.
• Chapter 4: Classification of Elements. Notes and past questions on Classification of Elements for NEB Class 11 Chemistry.
• Chapter 5: Chemical Bonding. Notes and past questions on Chemical Bonding for NEB Class 11 Chemistry.
• Chapter 6: Oxidation and Reduction. Notes and past questions on Oxidation and Reduction for NEB Class 11 Chemistry.
• Chapter 7: States of Matter. Notes and past questions on States of Matter for NEB Class 11 Chemistry.
• Chapter 8: Chemical Equilibrium. Notes and past questions on Chemical Equilibrium for NEB Class 11 Chemistry.
• Chapter 9: Chemistry of Non-Metals. Notes and past questions on Chemistry of Non-Metals for NEB Class 11 Chemistry.
• Chapter 10: Chemistry of Metals. Notes and past questions on Chemistry of Metals for NEB Class 11 Chemistry.
• Chapter 11: Bio-Inorganic Chemistry. Notes and past questions on Bio-Inorganic Chemistry for NEB Class 11 Chemistry.
• Chapter 13: Fundamental Principles. Notes and past questions on Fundamental Principles for NEB Class 11 Chemistry.
• Chapter 14: Hydrocarbons. Notes and past questions on Hydrocarbons for NEB Class 11 Chemistry.
• Chapter 15: Aromatic Hydrocarbons. Notes and past questions on Aromatic Hydrocarbons for NEB Class 11 Chemistry.
• Chapter 17: Modern Chemical Manufactures. Notes and past questions on Modern Chemical Manufactures for NEB Class 11 Chemistry.
• Chapter 18: Fundamentals of Applied Chemistry. Notes and past questions on Fundamentals of Applied Chemistry for NEB Class 11 Chemistry.
• Chapter 19: Practical Work. Notes and past questions on Practical Work for NEB Class 11 Chemistry.

• Which of the following contains maximum number of molecules and why? i) 0.5 g of H2 or 5 litres of N2 at STP ii) 15 litres of H2 at STP o... (model)
• State the law of conservation of mass. (model)
• Why does the boiling point of a liquid remain constant even though the heating is continued? (model)
• Write down the dimensional characteristics and an example of the cubic crystal system. (model)
• State Hund's rule of maximum multiplicity. (model)
• Write down the values of quantum numbers n, l, m and s for the 11th electron of sodium (Na). (model)
• What is meant by a nuclear fusion reaction? Give one important application. (model)
• Write down the Lewis structure of i) HNO3 ii) O3 (model)
• Distinguish between polar and non-polar covalent bonds, giving an example of each. (model)
• What are s-block elements? Write an important feature of such elements. (model)
• Calculate the oxidation number of i) N in Zn(NO3)2 ii) P in H3PO2 (model)
• Mention the most favourable conditions for the better yield of the product SO3 in the equilibrium: 2SO2(g) + O2(g) <=> 2SO3(g) + 47 K.cal (model)
• Write down the chemical reaction for the preparation of ozone from oxygen. What happens when ozone is treated with mercury? (model)
• Name the isotopes of hydrogen. Which isotope is the least abundant on the earth? Write its one application. (model)
• Define the terms i) phosphorescence ii) photochemical smog. (model)

Frequently asked questions

Based on the official syllabus.