Oil rises up to wick in a lamp because_____________?
A. Oil is very light B. Oil is volatile C. Diffusion of oil through the wick D. Capillary action phenomenon
Stethoscope was invented by _______ ?
A. Rene Laennec B. Steven Sasson C. Martin Cooper D. Dave Hyatt
What is the molecular formula for Nitric acid ________ ?
A. HNO2 B. HNO3 C. HN2O2 D. H2NO4
The medical branch of science that deals with the study of skin, its functions, diseases, & treatment is ________ ?
A. Dermatology B. Dormatology C. Deontology D. Dermatoglyphics
The scientific study of fingerprints is called _________ ?
A. Dactylography B. Dactylology C. Dactyliology D. Dialectology
The discovery of neutron became very late because _______ ?
A. It does not carry any charge B. It does not move C. It is a fundamental particle D. It is present in nucleus
The absolute value of charge on electron was determined by ________ ?
A. J.J.Thomson B. Chadwick C. Rutherford D. Robert Millikan
What is the molecular weight of Ammonia (NH3) ________ ?
A. 17.031 g/mol B. 18.031 g/mol C. 19.031 g/mol D. 27.033 g/mol
What is the molecular formula for Ammonia?
A. NH B. NH2 C. NH3 D. NH4
What is the third most common gas found in the air we breathe ________ ?
A. Hydrogen B. Neon C. Carbondioxide D. Argon