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
Quartz crystals normally used in quartz clocks etc. is chemically 1 Sodium silicate 2 Germanium oxide 3 Silicon dioxide 4 None of these
When did the most luminous nova appear?
what is the smallest fish?
Brass is an alloy of 1 Nickel and copper 2 Zinc and copper 3 Nickel and zinc 4 Nickel and silver
Which of the following is a chemical change? 1 Oxidation 2 Reduction 3 Sublimation 4 Decomposition
When and by whom was the meteorological unit founded in bangalore science institute?
How many naval staffs can occupy arihant?
What is the percent of plazma in blood?
Permanent hardness of water may be removed by the addition of 1 Alum 2 Sodium carbonate 3 Lime 4 Potassium permanganate
Activity of an enzyme can be modulated by change of [a] pH [b] Light [c] Humidity [d] Rainfall
In modern science, what is 'fourth dimension'?
What are vitamins ? describe different kinds of vitamins