Earth is divided into following three layers?

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‘Black holes’ refers to_______________?

A. Holes occurring in heavenly bodies B. Bright spots on the sun C. Collapsing object of high density D. Collapsing object of low density...

What is Formula of “laughing gas”?

CH4 N2O H2SO4 HNO3...

Symptoms of vitamin b7 deficiency are known to ______________.

A. Pellagra B. Hair Loss C. Muscle weakness D. Xerophthalmia...

Who discovered the law of attraction and repulsion in electric charges ?

A: Newton B: Gullelio C: Coulumb D: Einstein GK Forum@Fb.com...

Development of calf muscles in ladies who wear high heel sandals is common example of ?

A: Natural selection B: Artificial selection C: Use & disuse of organ D: Inheritance of acquired character...