801Every Day ScienceMedium
Mars will be visible skimming south of which star in Gemini?
ABetelgeuse
MCQs
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Correct answer
C. Pollux
Explanation
Mars, as it moves through the sky, occasionally passes close to bright stars in constellations. In this case: Pollux is one of the two bright stars in the constellation Gemini, the other being Castor. Mars will be seen skimming south of Pollux, not Castor. Sirius and Betelgeuse belong to other constellations — Canis Major and Orion, respectively — and are not in Gemini. So, Mars will be visible skimming south of Pollux in Gemini.
Correct answer
B. Aluminum
Explanation
Aluminum is the correct answer. Review the question and compare it with the other choices to remember this fact for future exams.
Correct answer
B. Matter
Explanation
Matter is the correct answer. Review the question and compare it with the other choices to remember this fact for future exams.
Correct answer
B. WBC
Explanation
WBC is the correct answer. Review the question and compare it with the other choices to remember this fact for future exams.
Correct answer
A. Hydrogen gas
Explanation
When metal reacts with acid, a soap bubble is formed and the bubble contains Hydrogen gas (example: HCl, H2SO4). Hydrogen gas is liberated when anacid reacts with a metal. For example, when zin cmetal reacts with dil. hydrogen is evolved and salt zinc chloride is formed as: It can be tested bybringing a burning candle near thegas.
Correct answer
D. 3
Explanation
3 is the correct answer. Review the question and compare it with the other choices to remember this fact for future exams.
Correct answer
A. Soil
Explanation
Soil is the correct answer. Review the question and compare it with the other choices to remember this fact for future exams.
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D. Metrology
Explanation
Metrology is the correct answer. Review the question and compare it with the other choices to remember this fact for future exams.
Correct answer
D. Measuring light Intensity
Explanation
A photometer is an instrument that measures the strength of electromagnetic radiation in the range from ultraviolet to infrared and including the visible spectrum. Most photometers convert light into an electric current using a photoresistor, photodiode, or photomultiplier. Photometers measure: Illuminance. Irradiance.
Correct answer
C. Vectors
Explanation
Vectors is the correct answer. Review the question and compare it with the other choices to remember this fact for future exams.