In fireworks, the green flame is produced because of
1 Mercury
2 Sodium
3 Potassium
4 Barium
Marsh gas is 1 Hydrogen 2 Nitrogen 3 Methane 4 Ethane
What is super nova?
In which year was the meteorology department founded?
WHAT IS AMBER
What is one light minute?
Which is india’s largest nuclear research reactor?
WHATE COLOUR OF STAR;SIZE;
Water is neither acidic nor alkaline because 1 It cannot accept or donate protons 2 It boils at a high temperature 3 It can dissociate into equal number of hydrogen ions 4 It cannot donate or accept electrons
Which is the largest comet?
The major constituents of Portland cement include 1 Lime, silica and iron oxide 2 Lime, silica and magnesia 3 Silica, alumina and magnesia 4 Lime, silica and alumina
Terls was dedicated to u.n as an international institution?
Which of the following fertilizers leaves acidic residue? 1 Urea 2 Ammonium phosphate 3 Ammonium sulphate 4 None of these