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For measuring large distances ___________ is used as a unit.
Concept: undefined >> undefined
The speed of light is __________ km/s
Concept: undefined >> undefined
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Give scientific reason.
Atom is electrically neutral.
Concept: undefined >> undefined
Stars are born out of _________ clouds.
Concept: undefined >> undefined
Stars are spheres of ______ gas.
Concept: undefined >> undefined
Draw a neat labelled diagram.
Thomson's atomic model
Concept: undefined >> undefined
Light takes ______ to reach us from the Sun while it takes ______ to reach us from the moon.
Concept: undefined >> undefined
Give scientific reasons.
Plants in an ecosystem are called producers.
Concept: undefined >> undefined
Give scientific reasons
Rhinos were restored in Dudhwa forest.
Concept: undefined >> undefined
Differentiate between evergreen forests and grasslands.
Concept: undefined >> undefined
Why indicator does not get affected by salt?
Concept: undefined >> undefined
Main constituent of base is ______.
Concept: undefined >> undefined
Oxides of metals are acidic in nature.
Concept: undefined >> undefined
Metal corrodes due to salts.
Concept: undefined >> undefined
Salts are neutral.
Concept: undefined >> undefined
Who is telling the truth?
The temperature of a substance is measured in joules.
Concept: undefined >> undefined
Who is telling the truth?
Heat flows from an object at higher temperature to an object at lower temperature.
Concept: undefined >> undefined
Temperature is the measures of the ______ Kinetic energy of the atoms in a substance.
Concept: undefined >> undefined
What is the difference between heat and temperature? What are their units?
Concept: undefined >> undefined
