Question
Each sentence below has a blank. Choose the most
appropriate word that best fits the context of the sentence. Coral reefs are highly sensitive ecosystems that can ______ rapidly when exposed to rising ocean temperatures and pollution.Solution
The sentence talks about harmful effects (temperature + pollution) → so negative word needed.  Correct → deteriorate (to worsen or decline) Option meanings: Flourish – grow well (opposite) Deteriorate – become worse (correct) Stabilize – become steady Expand – increase in size
The splitting up of white light into seven colours on passing through a glass prism is called as
Smog is a combination of –
The blades of a moving jet engine are an example of:
The apparatus used in the refrigeration is
Sound and light waves both have ___________ .
What is the SI unit of power?
The motion of a freely falling body is an example of ______________ accelerated motion.
Among the following materials, which is not an insulator?
Heat stored in water vapour is –
Which of the following is the time taken for one complete oscillation of a sound wave in the density of the medium?
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