⭐ Chapter 1: Crop Production & Management
- Which process is used for turning and loosening the soil?
A. Irrigation
B. Tilling
C. Weeding
D. Harvesting
Answer: B - The tool used for sowing seeds is:
A. Hoe
B. Seed drill
C. Shovel
D. Plough
Answer: B - Removing unwanted plants is called:
A. Threshing
B. Weeding
C. Harvesting
D. Manuring
Answer: B
⭐ Chapter 2: Microorganisms – Friend and Foe
- Which of the following is NOT a microorganism?
A. Bacteria
B. Virus
C. Algae
D. Mushroom
Answer: D - The microorganism used in making curd is:
A. Yeast
B. Lactobacillus
C. Rhizobium
D. Virus
Answer: B - Which microorganism causes measles?
A. Bacteria
B. Virus
C. Fungus
D. Protozoa
Answer: B
⭐ Chapter 3: Synthetic Fibres and Plastics
- Which of the following is a synthetic fibre?
A. Cotton
B. Wool
C. Nylon
D. Silk
Answer: C - Which plastic can be recycled?
A. Thermoplastics
B. Thermosetting plastics
C. Both
D. None
Answer: A - Bakelite is an example of:
A. Thermoplastic
B. Thermosetting plastic
C. Fibre
D. Natural polymer
Answer: B
⭐ Chapter 4: Materials – Metals & Non-Metals
- Which is a metal?
A. Sulphur
B. Carbon
C. Iron
D. Oxygen
Answer: C - The property of metals to be beaten into sheets is called:
A. Ductility
B. Malleability
C. Conductivity
D. Elasticity
Answer: B - Which non-metal is used for disinfecting water?
A. Nitrogen
B. Carbon
C. Chlorine
D. Sulphur
Answer: C
⭐ Chapter 5: Coal & Petroleum
- Coal is formed from:
A. Dead animals
B. Forests buried under soil
C. Sand and clay
D. Rocks
Answer: B - Which is a natural fossil fuel?
A. LPG
B. CNG
C. Petroleum
D. Kerosene
Answer: C - The slow process by which dead plants become coal is called:
A. Carbonisation
B. Decomposition
C. Condensation
D. Combustion
Answer: A
⭐ Chapter 6: Combustion & Flame
- A substance that burns in air is called:
A. Flame
B. Fuel
C. Combustible
D. Non-combustible
Answer: C - The hottest part of a flame is:
A. Outer zone
B. Inner zone
C. Middle zone
D. Yellow zone
Answer: A - LPG is a:
A. Solid fuel
B. Liquid fuel
C. Gas fuel
D. None
Answer: C
⭐ Chapter 7: Conservation of Plants & Animals
- Cutting of trees on a large scale is called:
A. Reforestation
B. Deforestation
C. Afforestation
D. Plantation
Answer: B - A protected area for animals is called:
A. Sanctuary
B. Zoo
C. Garden
D. Park
Answer: A - The Red Data Book contains:
A. Endangered species
B. Fossils
C. Food chains
D. Minerals
Answer: A
⭐ Chapter 8: Cell — Structure & Functions
- The basic unit of life is:
A. Tissue
B. Organ
C. Cell
D. System
Answer: C - Which cell part controls all activities?
A. Cytoplasm
B. Membrane
C. Nucleus
D. Wall
Answer: C - Plant cells have an extra layer called:
A. Cell wall
B. Protein coat
C. Capsule
D. Chloroplast
Answer: A
⭐ Chapter 9: Reproduction in Animals
- The mode of reproduction in humans is:
A. Asexual
B. Sexual
C. Budding
D. Fragmentation
Answer: B - A fertilised egg is called:
A. Foetus
B. Embryo
C. Zygote
D. Gamete
Answer: C - Which animal lays eggs?
A. Cow
B. Cat
C. Hen
D. Dog
Answer: C
⭐ Chapter 10: Reaching the Age of Adolescence
- Adolescence begins around:
A. 5 years
B. 10–19 years
C. 2 years
D. 20 years
Answer: B - The hormone responsible for growth spurt is:
A. Thyroxine
B. Insulin
C. Growth hormone
D. Estrogen
Answer: C - Voice change in boys is due to:
A. Estrogen
B. Testosterone
C. Insulin
D. Thyroxine
Answer: B
⭐ Chapter 11: Force & Pressure
- Force is a:
A. Push
B. Pull
C. Push or Pull
D. None
Answer: C - Pressure =
A. Force × Area
B. Force ÷ Area
C. Area ÷ Force
D. Mass × Area
Answer: B - Liquids exert pressure on:
A. Upward
B. Downward
C. All directions
D. Only sideways
Answer: C
⭐ Chapter 12: Friction
- Friction acts:
A. In direction of motion
B. Opposite to motion
C. At 90°
D. Upwards only
Answer: B - Friction can be reduced by:
A. Making surfaces rough
B. Using oil/grease
C. Increasing weight
D. Increasing pressure
Answer: B - Which surface has least friction?
A. Concrete
B. Grass
C. Ice
D. Rubber
Answer: C
⭐ Chapter 13: Sound
- Sound is produced by:
A. Vibrations
B. Movement
C. Friction
D. Heat
Answer: A - High pitch means:
A. Slow vibration
B. Fast vibration
C. No vibration
D. Random vibration
Answer: B
⭐ Chapter 14: Chemical Effects of Electric Current
- The liquid that conducts electricity is called:
A. Distilled water
B. Electrolyte
C. Metal
D. Plastic
Answer: B - Electric current produces:
A. Heating
B. Lighting
C. Magnetic effect
D. All
Answer: D
⭐ Chapter 15: Some Natural Phenomena
- The electric discharge between clouds is:
A. Thunder
B. Lightning
C. Fire
D. Cyclone
Answer: B - Earthquakes are measured by:
A. Barometer
B. Thermometer
C. Richter scale
D. Anemometer
Answer: C
⭐ Chapter 16: Light
- A mirror that curves inward is:
A. Plane
B. Convex
C. Concave
Answer: C - Which mirror is used in cars as rear-view mirrors?
A. Plane
B. Convex
C. Concave
Answer: B
⭐ Chapter 17: Stars & The Solar System
- The nearest star to Earth (after the Sun) is:
A. Sirius
B. Proxima Centauri
C. Polaris
D. Vega
Answer: B - The biggest planet in the solar system:
A. Earth
B. Mars
C. Jupiter
D. Saturn
Answer: C