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MATTER ITS PROPERTIES & ITS TRANSFORMATION: Change of state
MATTER ITS PROPERTIES & ITS TRANSFORMATION: Heat & Thermal Insulation
MATTER ITS PROPERTIES & ITS TRANSFORMATION: Temperature
Matter: Its Properties & Transformation
THE WORLD OF SCIENCE: Base Physical Quantities, SI Units & Measuring Instruments
THE WORLD OF SCIENCE: Measurement of Density
THE WORLD OF SCIENCE: Measurements of Speed
THE WORLD OF SCIENCE: Scientific Method
THE WORLD OF SCIENCE: Simple application of measurements
The Science World
5/30 MCQs for:
MATTER ITS PROPERTIES & ITS TRANSFORMATION: Heat & Thermal Insulation
Which of the following materials is used to insulate refrigerators?
Copper sheet.
Steel.
Foam.
Aluminum foil.
Why do train tracks have gaps?
To reduce friction.
To prevent expansion from bending or breaking tracks.
For decoration.
To allow trains to move smoothly.
Which effect of heat is used in electric irons?
Heating clothes.
Melting.
All are correct.
Expansion.
Which effect of heat is used in cooking food?
Expansion.
Heating.
All are correct.
Conduction.
Heat flows naturally from:
Cold to hot.
Both directions.
Neither.
Hot to cold.
