MCQs
Read every question, see the correct answer, and understand the explanation at your own pace. Study mode has no timer and no negative marking.
Correct answer
C. Plants
Explanation
Plants is the correct answer. Review the question and compare it with the other choices to remember this fact for future exams.
Correct answer
A. Thomas Alva Edison
Explanation
Thomas Alva Edison is the correct answer. Review the question and compare it with the other choices to remember this fact for future exams.
Correct answer
D. Evaporation (mixing) fog
Explanation
Evaporation (mixing) fog is the correct answer. Review the question and compare it with the other choices to remember this fact for future exams.
Correct answer
B. Water
Explanation
Water is the correct answer. Review the question and compare it with the other choices to remember this fact for future exams.
Correct answer
B. 3
Explanation
Since the invention of refrigerators there are three main gases have been used for freezing process i.e. Ammonia, Freon and Tetrafluoroethane.
Correct answer
A. Rainfall
Explanation
A pluviometer is a rain gauge, an instrument that is used to measure the amount of precipitation in the form of rainfall that has fallen at a given location over a specified period of time. … Rainfall is measured as the height, usually expressed in millimeters or inches, of the liquid collected in the cylinder.
Correct answer
D. J.J Thomson
Explanation
J.J Thomson is the correct answer. Review the question and compare it with the other choices to remember this fact for future exams.
Correct answer
A. Gravity is great and temperature of atmosphere is low
Explanation
Gravity is great and temperature of atmosphere is low is the correct answer. Review the question and compare it with the other choices to remember this fact for future exams.
Correct answer
B. Emphysema
Explanation
Emphysema is the correct answer. Review the question and compare it with the other choices to remember this fact for future exams.
Correct answer
D. 100’C
Explanation
100’C is the correct answer. Review the question and compare it with the other choices to remember this fact for future exams.