what are some important questions in science class 10
Answers
refraction
hypermetropia
myopia
chapter 1: Chemical Reactions and Equations
all the reactions in the ncert textbook with the reactions in practicals are also exepected to come
Details of some very important chemical reactions:
• Action of water on quick lime
• Action of heat on ferrous sulphate crystals
• Iron nails kept in copper sulphate solution
• Reaction between sodium sulphate and barium chloride solutions
Questions on Corrosion & Rancidity are also expected in the paper.
Chapter 2: Acids, Bases and Salts
Preparation, Reactions, Uses of the following substances:
• Sodium Hydroxide
• Bleaching Powder
• Baking Soda
• Washing Soda,
• Plaster of Paris (Most Important)
Some important portion from the syllabus of practical
Studying the properties of acids and bases (HCl & NaOH) on the basis of their reaction with:
(a) Litmus Solution (Blue/Red)
(b) Zinc Metal
(c) Solid Sodium Carbonate
Chapter 3: Metals and Non-Metals
• Properties of Metals and Non-Metals: Physical & Chemical
• Formation and Properties of Ionic Compounds (NaCl, MgCl2),
• Basic Terms Used in Metallurgy: Calcination, Roasting etc.
• Activity Series
• Corrosion and its prevention
Chapter 4: Carbon and its Compounds
• Covalent Bonding in Carbon Compounds
• Main Reasons for Forming Large Number of Compounds: Catenation , Tetra-Valency
• Homologous series:
• Nomenclature of Carbon Compounds Containing Functional Groups
(Halogens, Alcohol, Ketones, Aldehydes, Alkanes and Alkynes)
• Saturated & Unsaturated hydrocarbons:
• Chemical Properties of Carbon Compounds
• Ethanol and Ethanoic acid
• Soaps & Detergents
Chapter 5: Periodic Classification of Elements
• Gradation in Properties: Valency, Atomic number, Metallic and Non-metallic properties.
Chapter 6: Life Processes
• Photosynthesis
• Digestion
• Respiration
• Transportation in Animals
• Transportation in Plants
• Excretion
• Important Diagrams
→ Human Respiratory System
→ Human Heart
→ Cross Section of A Leaf
→ Nutrition in Amoeba
→ Excretory System
Chapter 7: Control and Coordination
• Control and Co-ordination in Animals & Plants
• Tropic Movements in Plants
• Plant & Animal Hormones
• Control and Co-ordination in Animals
• Nervous system
• Voluntary, Involuntary and Reflex Action
• Chemical Co-ordination
• Important Diagrams
→ Structure of Neuron
→ Human Brain
Chapter 8: How do Organisms Reproduce?
• Reproduction in Animals and Plants (Asexual and Sexual)
• Safe Sex vs HIV/AIDS
• Important Diagrams
→ Germination of Pollen on Stigma
→ Budding in Hydra
→ Binary fission in Amoeba
→ Longitudinal section of flower
Chapter 9: Heredity and Evolution
• Heredity
• Mendel’s Contribution
• Laws for Inheritance of Traits
• Sex Determination
• Basic Concepts of Evolution
Chapter 10: Light – Reflection and Refraction
• Basic Terms: Centre of Curvature, Principal Axis, Principal Focus, Focal Length,
• Images Formed by Spherical Mirrors
• Mirror formula & Magnification (Numerical, No Derivation)
• Refractive index (Numerical)
• Refraction & Laws of refraction
• Refraction of Light by Spherical Lens
• Image Formed by Spherical Lenses
• Lens Formula & Magnification (Numerical)
• Power of a lens (Numerical)
Chapter 11: Human Eye and Colourful World
• Functioning of a Lens in Human Eye
• Power of Accommodation
• Defects of Vision and Their Corrections
• Applications of Spherical Mirrors & Lenses
• Refraction of Light through a Prism
• Dispersion & Scattering of Light (Daily Life Examples)
Chapter 12: Electricity
• Ohm’s law, Resistance, Resistivity
• Factors on Which the Resistance of a Conductor Depends
• Series & Parallel Combination of Resistors and Its Applications in Daily Life
• Heating Effect of Electric Current and Its Applications in Daily Life
• Electric Power
• Interrelation between P, V, I and R
Chapter 13: Magnetic Effects of Electric Current
• Magnetic Field, Magnetic Field Lines
• Magnetic Field Due to A Current Carrying Conductor
• Magnetic Field Due to Current Carrying Coil or Solenoid
• Force on current carrying conductor
• Fleming’s Left & Right Hand Rule
• Induced Potential Difference & current
• Electric Motor & Generator
• AC vs DC
• Domestic Electric Circuits