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Detergents dissolved in water help in cleaning clothes by_________?
A. Increasing the temperature of water
B. Reacting chemically with dirt
C. Reducing the surface tension of water
D. Dissolving dirt
The absorption of ink by blotting paper involves__________?
A. Viscosity of ink
B. Capillary action phenomenon
C. Diffusion of ink through the blotting
D. Siphon action
Materials for rain-proof coats and tents owe their water proof properties to________?
A. Surface tension
C. Specific gravity
A. An accelerated motion
B. No acceleration at all
C. Uniform acceleration
D. Uneven acceleration
For being able to see three-dimensional pictures we have to use_________?
A. A binocular
B. A camera
C. An epidiascope
D. A stereoscope
C. 4° K
The theory of Expanding Universe was first propounded by____________?
An instrument to detect the purity of milk is____________?
Coulomb is the scientific unit to measure?
D. None OF These
Who proposed this concept “All motion is relative”?
A. Albert Einstein
B. John Kepler
C. Galileo Galilei
The field of specialization of famous Muslim scientist Abu Usman Aljahiz was?
A satellite moving round the earth with a uniform speed has, Coulomb is the scientific unit to measure?, An instrument to detect the purity of milk is