Which of the following is the basis of modern periodic table?
1 Atomic mass
2 Atomic number
3 Atomic size
4 Atomic volume
The Contact Process is involved in the manufacture of 1 Nitric acid 2 Sulphuric acid 3 Ammonia 4 Caustic soda
Chemical formula for water glass is 1 Na2Sio3 2 Al2O3 3 NaA1O2 4 CaSiO3
What is the work of a patent engineer? Does the experience in working as patent engineer helps in finding a job in a refinery?
why ammonia cylinder getting icing outside of cylinder when it approx half or less than it...??
Where is the biggest solar telescope in india situated?
What is the significance of international geo - physical year?
Which of the following is not a chemical reaction? 1 Burning of paper 2 Digestion of food 3 Conversion of water into steam 4 Burning of coal
In which year was the meteorology department founded?
The metallic constituents of hard water are 1 Magnesium, calcium and tin 2 Iron, tin and calcium 3 Calcium, ,magnesium and iron 4 None of these
How many colours the sunlight spectrum has ? 1 Five 2 Three 3 Seven 4 Nine
Photosynthesis is 1 An exothermic process 2 An endothermic process 3 A neutral process 4 A thermostatic process
Which of the following alloys is used for making magnets? 1 Duralumin 2 Stainless steel 3 Alnico 4 Magnalium