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ENERGY: Action of electricity on materials
ENERGY: Action of heat on materials
MATTER - PROPERTIES AND TRANSFORMATION: Chemical Reactions And Equations
MATTER - PROPERTIES AND TRANSFORMATION: Chemical Symbols, Formulae And Valency
MATTER - PROPERTIES AND TRANSFORMATION: Effect Of Heat On Substances
MATTER - PROPERTIES AND TRANSFORMATION: Introduction To Chemistry - Symbols
MATTER - PROPERTIES AND TRANSFORMATION: Mixtures And Pure Substances
MATTER - PROPERTIES AND TRANSFORMATION: Periodic table - Families of elements and Relative reactivity
MATTER - PROPERTIES AND TRANSFORMATION: Reaction With Oxygen of air
MATTER - PROPERTIES AND TRANSFORMATION: The Atom And Sub-Atomic Particles
5/50 MCQs for:
ENERGY: Action of heat on materials
Which traditional fuel contributes significantly to indoor air pollution in many developing countries?
Fuelwood and dung.
Natural gas.
Petroleum.
Coal (for power plants).
A disadvantage of relying heavily on fossil fuels is:
They are difficult to transport.
They are too expensive.
They are renewable.
They produce greenhouse gases contributing to climate change.
Which of the following is a key characteristic of a renewable energy source?
It is only used for electricity generation.
It is available in limited quantities.
It produces no pollution.
It can be replenished naturally over a relatively short period.
What is the balanced equation for the thermal decomposition of copper(II) carbonate?
CuCO₃(s) → Cu(s) + C(s) + O₂(g).
CuCO₃(s) → CuO(s) + CO₂(g).
CuO(s) + CO₂(g) → CuCO₃(s).
CuCO₃(s) → Cu(s) + CO₂(g).
Which fuel source is considered non-renewable despite being non-fossil?
Wind.
Solar.
Nuclear (uranium).
Biomass.
