Question
She told me that she knows someone who studies the stars
and planets . Select the option that can be used as a one-word substitute for the bold group of wordsSolution
"Astronomer" is the correct one-word substitute as it refers to a person who studies celestial bodies such as stars and planets. (1) Chemist: A chemist studies chemicals and their reactions, which does not relate to the study of stars and planets. (3) Geologist: A geologist studies the Earth and its processes, including rocks and minerals, not celestial objects. (4) Biologist: A biologist studies living organisms and their interactions with the environment, not celestial bodies.
Ethane gas has a slightly _____ taste.
Which of the following isotope of hydrogen is radioactive in nature?
Acid rain is caused due to pollution of the atmosphere by:
Magnesium has atomic number as 12. Find out its valiancy.
_________is a formula for rust.
Which polymer is formed by the copolymerization of phenol and formaldehyde?
Which endocrine gland requires iodine to synthesize a particular hormone, whose deficiency may cause goitre disease?
The motion of an object under free fall is an example of which of the following?
When cathode rays strike a target of high atomic weight, they give rise to:
Anemometer is used to measure –
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