When and where was the first experimental atomic explosion took place?
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Which of the following is used in making smoke bombs? 1 Sulphur 2 phosphorus 3 Hydrogen 4 Carbon
The Indian variety of which of the following plant has been proved to be the greatest pollution fighter in India: 1) Tea 2) Jute 3) Mustard 4) Groundnut
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Which of the following types of photons has the highest energy? 1 Visible radiations 2 Radio waves 3 Gamma rays 4 X-rays
What is practical frequency. ? How create a frequency band?
is there any instrument to convert mechanical energy into electrical energy
What is the life cycle ?
What is range of sagarika?
difference between typewriter and computer?
The recent atomic weight scale is based on 1 1H1 2 1H2 3 6C12 4 8O16
Soda-acid fire extinguisher involves the reaction between 1 Sodium hydroxide and nitric acid 2 Sodium bi carbonate and sulphuric acid 3 Sodium sulphate and carbonic acid 4 Sodium carbonate and hydrochloric acid
Rubber is coagulated from latex by adding 1 Hydrochloric acid 2 Acetic acid 3 Sulphuric acid 4 Carbonic acid