Which radioactive pollutant has recently drawn the attention
of the public, due to its occurrence in the building material?
1 Radium
2 Radon
3 Thorium
4 Plutonium
Which of the following gases is used as an illuminant in lamps used by hawkers? 1 Methane 2 Ethylene 3 Acetylene 4 Hydgrogen
‘Saponification involves the hydrolysis of fats and oils by 1 Water 2 Washing soda 3 Stearic acid 4 Caustic soda
Which of the following is a protein? 1 Wool 2 Starch 3 Natural rubber 4 Cellulose
Caustic soda is 1 NaC1 2 Na2CO3 3 NaOH 4 NaHCO3
In an atomic explosion, enormous energy is released which is due to the 1 Conversion of neutrons into protons 2 Conversion of chemical energy into nuclear energy 3 Conversion of mass into energy 4 None of these
What vendors does Ameber Recommed?
how the Adams bridge was formed?
Heavy water is 1 Sea water (H2O+Salt) 2 D2O 3 H2O2 4 None of these
Which of the following is the basis of modern periodic table? 1 Atomic mass 2 Atomic number 3 Atomic size 4 Atomic volume
Monazite is an ore of 1 Iron 2 Titanium 3 Thorium 4 Zirconium
Which gas is used for preparation of soda water? 1 Ammonia 2 carbon dioxide 3 Hydrogen 4 Nitric oxide
What is voltage? ?? What type of of show voltage. ?? Practillay how's voltage?