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
The element found on the surface of the moon is 1 Tin 2 Tungsten 3 Tantalum 4 Titanium
Where Meson particles are found in ?
Who is the first female cosmonaut?
What are the important factors of cosmic rays?
What is one light second?
Combustion is the process in which 1 Heat is produced 2 Light is produced 3 Heat and light are produced 4 None of these
The type of glass used in making lenses and prisms is 1 Soft glass 2 Pyrex glass 3 Jena glass 4 Flint glass
Who is the oldest cosmonaut?
What is a nuclear triad?
Photosynthesis is 1 An exothermic process 2 An endothermic process 3 A neutral process 4 A thermostatic process
Which of the following gases is obtained by the reaction of copper with dilute nitric acid is 1 NO2 2 N2O5 3 O2 4 NO
What is practical frequency. ? How create a frequency band?