List of top Science Questions

Describe the process of Photosynthesis and write its balanced chemical equation.
Explain the Reactivity Series of metals and its importance in extraction.
Describe the structure of a Neuron and explain Reflex Action.
Write the chemical names, formulas, and uses of Baking Soda, Washing Soda, and Bleaching Powder.
State Ohm’s Law and describe its V-I graph.
State Fleming’s Left-Hand Rule and explain the principle of an electric motor.
Explain Myopia and Hypermetropia with their causes and correction methods.
Define Oxidation and Reduction with suitable examples.
State the Laws of Reflection and Laws of Refraction of light.
Define Power of a Lens and state its S.I. unit.
What is Biological Magnification, and how does it affect different trophic levels?
How is the sex of a child determined in human beings?
Explain the role of Thyroxin and Insulin hormones in the human body.
What is Transpiration, and how does it help in the upward movement of water in plants?
Explain how gaseous exchange occurs in plants through stomata and lenticels.
Define Reflex Action and explain the pathway of a Reflex Arc with an example.
What is the importance of DNA copying in reproduction?
Describe the process of Double Fertilization in flowering plants.
Describe the mechanism of Respiration in humans, including the role of alveoli.
Distinguish between Sexual and Asexual reproduction with examples.
Explain the neutralisation reaction with an example and its utility in daily life.
What are amphoteric oxides? Give two examples.
Differentiate between metals and non-metals based on their chemical properties.
Explain the formation of Ionic Compounds (e.g., \(NaCl\) or \(MgCl_2\)) and state their properties.
Explain the mechanism of cleaning action of soap (micelle formation).