Emerald is ----in colour
1 Violet
2 Yellow
3 Deep green
4 Prussian blue
What is the life cycle ?
What do you understand by nutritive constituents of food ?
Water is a good solvent of ionic salts because 1 It has no colour 2 It has a high boiling point 3 It has a high dipole moment 4 It has a high specific heat
In which year the solar observatory in kodikanal founded?
Which is the most famous comet?
Brass gets discolored in air because of the presence of which of the following gases in air? 1 Carbon dioxide 2 Oxygen 3 Hydrogen sulphide 4 Nitrogen
Epoxy resins are used as 1 Moth repellants 2 Insecticides 3 Detergents 4 Adhesives
Which of the following is used in making smoke bombs? 1 Sulphur 2 phosphorus 3 Hydrogen 4 Carbon
The correct sequence of various regions I absorption spectrum is 1 Visible, ultraviolet, microwave, infra red 2 Infra red, gamma rays, ultraviolet, microwave 3 Ultra violet, visible, infra red, microwave 4 None of these
Which of the following reagents gives a silver mirror test when added to aldehydes? 1 Fehling’s solution 2 Tollen’s Reagent 3 Ebaeyer’s Reagent 4 Nessler’s Reagent
iwant to learn robotics so how can iproceed
precautions to be observed while using electrical equipment