Old-written material, which cannot be read easily, can be
read by
1 Cosmic rays
2 Ultraviolet rays
3 Infra red rays
4 None of these
example for navigation satellite?
What is the colouring matter in plants called
what does the haversian central canal in each osteon contains?
What are luminous irregular nebulae?
the place where maximum sunlight is present in december . 1. chennai 2.koimbatur 3.banglore 4. kanyakumari
Which of the following is used as a coolant in nuclear reactors? 1 Heavy water 2 Cadmium 3 Liquid sodium 4 None of these
2 Answers WBCS West Bengal Civil Service,
Caustic soda is 1 NaC1 2 Na2CO3 3 NaOH 4 NaHCO3
Which of the following is in liquid form at room temperature? 1 Cerium 2 Sodium 3 Francium 4 Lithium
Rubber is coagulated from latex by adding 1 Hydrochloric acid 2 Acetic acid 3 Sulphuric acid 4 Carbonic acid
Which of the following is a protein? 1 Wool 2 Starch 3 Natural rubber 4 Cellulose
Which of the following alloys is used for making magnets? 1 Duralumin 2 Stainless steel 3 Alnico 4 Magnalium
Which of the following is called a strategic metal? 1 Silicon 2 Germanium 3 Titanium 4 Uranium