The neutral atom’s two isotopes differ in the number of
1 Electron shells
2 Protons
3 Valence electrons
4 Neutrons
HELPS IN PROPAGATING RADIO SIGNALS
What is the Organic Evolution ?
in earth 1degree equals how many kilo meters?
What do you understand by nutritive constituents of food ?
0.005M K2Cr2O7 solution for calibration of UV.why 0.005M K2Cr2O7?
Which of the following is a chemical change? 1 Oxidation 2 Reduction 3 Sublimation 4 Decomposition
Why is ice wrapped in gunny sacks to prevent it from melting
Why cMadurai is hotter than chennai?
Which of the following is commonly called a ‘polyamide’? 1 Rayon 2 Orlon 3 Terylene 4 Nylon
What are luminous irregular nebulae?
The wavelength of X-ray is of order of 1 1 cm 2 1m 3 1 Angstrom 4 10 micron
Caustic soda is 1 NaC1 2 Na2CO3 3 NaOH 4 NaHCO3