Numericals on Acceleration || Chapter Motion || Class - 9 || By Dutta Sir .
Kinds of Pollination | advantages and Disadvantages of Self Pollination | Class - 9 | By Dutta Sir
Electrical Charges || With Examples || Class 8 || By Dutta Sir.
Molecules , Atomicity , Ions and Valency || Class -9 || By Dutta Sir .
Gynoecium | Brief Explanation Of Whorls of Flower | Placenta and Placentation | Class - 9 | part - 2
Densities Of Different Substances || Numericals || Class 8 ICSE || By Dutta Sir
Density of liquid || Density Bottle || Class 8 ICSE || By Dutta Sir
Heat Energy || Rise in Temperature || Class 8 ICSE || By Dutta Sir .
The Ovule | Structure and Function | Cells contain in Embryo Sac | Class - 9 | By Dutta Sir .
Balanced Diet | Food Pyramid | CH - Nutrition | Class - 9 | By Dutta Sir
Electric power and Energy || with all formulas || Class 8 || By Dutta Sir .
Laws Of Refraction || Light Energy || Class 8 ICSE || By Dutta Sir .
Electricity || Electric charges and Electric Current || Class 8 || By Dutta Sir.
Reflection Of Light On Spherical Mirror || || Light Energy || Class 8 ICSE|| By Dutta Sir
Uniform And Non- Uniform Motion Of a Body || Class 9 || Chap: Motion || By Dutta Sir.
Respiration : In Plants | Types of Respiration | Class - 9 | By Dutta Sir .
Conductors and Insulators || Precautions with examples || Class 8 || By Dutta Sir.
Series and Parallel Circuits || Electric Fuse || Characteristics || Class 8 || By Dutta Sir .
Food Chain And Food Web | Ch - Ecosystem | Class - 9 | By Dutta Sir
Structure of Monocotyledonous Seeds | Features of Maize Grains | Class - 9 | Ch- Seeds