A battery converts ________ into electrical energy.
1.Potential energy
2.Chemical energy
3.Nuclear energy
4.Mechanical energy
Absolute zero, which is the lower limit of the thermodynamic temperature scale, is equivalent to ________ on the Celsius scale.
1.273 °C
2.0 °C
3.100 °C
4.973 °C
Battery was invented by
1.Volta
2.Hero
3.Fermi
4.Maiman
Between the melting point and boiling point of a substance, the substance is a?
1.Solid
2.Liquid
3.Gas
4.Crystal
Bronze is an alloy of
1.Iron, Carbon
2.Copper, Tin
3.Nickel, Zinc
4.Mercury, Lead
Current is the flow of
1.Electrons
2.Protons
3.Neutrons
4.Voltage
Electrons were discovered by
1.James Chadwick
2.J.J. Thomson
3.F.W. Aston
4.Rutherford
Energy can be converted from one form to another, but all energy ends up as
1.Kinetic energy
2.Potential energy
3.Heat energy
4.Chemical energy
he average salinity of the Earths oceans in 1 kilogram of sea water is about ________ grams of salt.
1.90
2.25
3.30
4.35
he Earths atmosphere is divided into ________ main layers.
1.4
2.5
3.6
4.1
Marble and slate are examples of
1.igneous rocks
2.metamorphic rocks
3.sedimentary rocks
4.crystals
Mass Spectrograph was invented by
1.Einstein
2.James Chadwick
3.F.W. Aston
4.Rutherford
Molecules with identical molecular formulae but with different structural formulae are called
1.Isotopes
2.Isomers
3.Electrode
4.Compound
Molten rock above the surface of the Earth is called?
1.Lava
2.Magma
3.Crystals
4.Granite
Molten rock below the surface of the Earth is called?
1.Lava
2.Magma
3.Crystals
4.Granite
Neutrons were discovered by
1.Einstein
2.James Chadwick
3.F.W. Aston
4.Rutherford
Nucleus was discovered by
1.Einstein
2.James Chadwick
3.F.W. Aston
4.Rutherford
One way of transfer of heat energy is convection which occurs in
1.Liquids only
2.Gasses only
3.Liquids and gasses
4.Liquids, gasses and solids
Rocks which are formed by high temperature and pressure on existing rocks over a period of time are called ________ rocks.
1.igneous
2.metamorphic
3.sedimentary
4.crystal
Salty water can be made pure by the method of
1.filtration
2.evaporation
3.chromatography
4.distillation
Sandstone and limestone are examples of
1.igneous rocks
2.metamorphic rocks
3.sedimentary rocks
4.crystals
The boiling point of alcohol is
1.78 °C
2.86 °C
3.94 °C
4.100 °C
The diameter of the Earths equator is larger than the pole-to-pole diameter by
1.40 km
2.43 km
3.46 km
4.49 km
The Earths atmosphere is divided into ________ layers.
1.4
2.5
3.6
4.7
The entropy of the universe is
1.Increasing
2.Decreasing
3.Constant
4.None of these
The fresh water on the Earth is ________ of the total water.
1.2.50%
2.5%
3.7.50%
4.10%
The key factor in determining the weather is the quantity of ________ in the atmosphere
1.Water vapour
2.Oxygen
3.Carbon dioxide
4.Hydrogen
The mass is highly concentrated form of
1.Weight
2.Energy
3.Force
4.Momentum
The metal which is liquid at room temperature is?
1.Zinc
2.Nickel
3.Lead
4.Mercury
The most abundant element in the earths crust is oxygen. The second most abundant element in the earths crust is
1.Hydrogen
2.Nitrogen
3.Brass
4.Silicon
The most abundant substance that constitutes the mass of the Earth is?
1.Iron
2.Oxygen
3.Nitrogen
4.Silicon
The nearest planet to the Sun is
1.Mercury
2.Venus
3.Mars
4.Jupiter
The ozone layer is at height of ________ kilometers from the surface of the Earth.
1.10 to 20
2.20 to 30
3.30 to 40
4.40 to 50
The Ozone Layer lies in the
1.troposphere
2.stratosphere
3.mesosphere
4.thermosphere
The ozone layer was discovered by
1.F.W. Aston and J.J Thomson
2.Albert Einstein
3.Rutherford
4.Charles Fabry and Henri Buisson
The Tectonic Plates of the Earth lies in
1.Inner Core
2.Outer Core
3.Lithosphere
4.Asthenosphere
The unit of current is
1.Volt
2.Ampere
3.Ohm
4.Watt
The unit of efficiency is
1.Volt
2.Watt
3.Joules
4.None of these
The visible cloud of dust and gas in space is called?
1.White Dwarf
2.Supernova
3.Nebula
4.Galaxy
The whole Earth can be covered by ________ geo-stationary satellites.
1.3
2.4
3.5
4.6
There are ________ major tectonic plates.
1.45
2.5
3.6
4.7
To prevent electric shocks, a/an ________ is placed in the circuit.
1.Ammeter
2.Voltmeter
3.Fuse
4.Diode
When molten rock cools and solidifies, the ________ are formed.
1.igneous rocks
2.sedimentary rocks
3.metamorphic rocks
4.none of these
Which from the following is incompressible?
1.Solids
2.Liquids
3.Gasses
4.All are compressible
Which from the following is NOT a non-renewable energy resource?
1.Coal
2.Natural gas
3.Nuclear
4.Geothermal
Which from the following is NOT a renewable energy resource?
1.Geothermal
2.Biomass
3.Solar
4.Nuclear
Which from the following is NOT a stored energy?
1.Thermal
2.Gravitational
3.Elastic potential energy
4.Chemical
Which from the following methods of heat transfer can take place in a vacuum?
1.Conduction
2.Convection
3.Radiation
4.All of the above
Which is the process of science?
1.Observation > Experiments > Hypothesis
2.Hypothesis > Observations > Experiments
3.Observation > Hypothesis > Experiments
4.Experiments > Observations > Hypothesis
Which type of rock may contain fossils?
1.Igneous
2.Metamorphic
3.Sedimentary
4.Crystals