A. of adhesion
B. of the gravitational force
C. of the pressure from all sides
D. the liquid tends to have minimum surface area due to surface tension
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A. estrangement between newly-wed couples-
B. planes travelling at certain speeds
C. sealing of diplomatic buildings against outside listening
D. the banning of the use of horns
A. gravitational force
B. cosmic attraction
C. energy or heat
D. polar attraction
A. atoms of hydrogen
B. atoms of uranium
C. atoms of any substance
D. atoms of oxygen
A. Highly penetrating X-rays
B. A beam of fast moving neutron rays
C. A beam of monochromatic coherent light
D. A beam of monochromatic incoherent light
A. green plants build up carbohydrates from oxygen and water
B. green or non-green plants build up carbohydrates from oxygen and carbon dioxide
C. green plants build up carbohydrates from carbon dioxide and water
D. None of above
A. it reduces visibility and harms eyes
B. when breathed, it causes diseases
C. it obstructs ultraviolet rays good for health
D. it damages property and vegetation
E. All of above
A. average of a country’s temperature
B. the time when days and nights appear to meet
C. the date when the days and nights have an equal duration
D. the days of temperate climate
A. sunny weather
B. storms
C. fair weather
D. windy weather
A. something foggy
B. an ancient Egyptian king
C. a group of stars in galaxy
D. an African tribe on the eastern coast
