Phenol was isolated by Runge from________________?
Phenol was isolated by Runge from________________?
A. vegetable oil
B. coaltar
C. wood
D. none of these
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The absolute value of charge on electron was determined by ________ ?
The absolute value of charge on electron was determined by ________ ?A. J.J.Thomson
B. Chadwick
C. Rutherford
D. Robert MillikanThe easy way of balancing the chemical equation is_________?
The easy way of balancing the chemical equation is_________?A. according to atom’s atomic number.
B. According to atom’s atomic mass.
C. First we balance Metal than non-metal than Hydrogen than Oxygen.
D. None of the aboveNucleic acids were first demonstrated in_________________?
Nucleic acids were first demonstrated in_________________?A. Pus cells
B. Sperm heads
C. 1872
D. all of the aboveBoiling point elevations can be measured by__________________?
Boiling point elevations can be measured by__________________?A. Beckmanns method
B. Landsbergers method
C. Linds method
D. none of the aboveOne of the outstanding features of boron is its ability to form__________________?
One of the outstanding features of boron is its ability to form__________________?A. Molecular addition compounds
B. Molecular crystals
C. Semiconductors
D. Ionic compoundsCrystallization does not involve_______________?
Crystallization does not involve_______________?A. heating
B. sublimation
C. cooling
D. vaporization