In which year, physical laboratory in ahmedabad was founded?
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precautions to be observed while using electrical equipment
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
What is the colouring matter in plants called
What is the Movement ?
Marsh gas is 1 Hydrogen 2 Nitrogen 3 Methane 4 Ethane
Water gas is prepared by passing 1 Steam over white-hot coke 2 Air over red-hot coke 3 Methane over red-hot coke 4 Steam over heated sulphur
Which among the following is a positively charged particle emitted by a radioactive element? 1 Alpha ray 2 Beta ray 3 Gamma ray 4 Cathode ray
What is the life cycle ?
Detergents used for cleaning clothes and utensils contain 1 Nitrates 2 Bicarbonates 3 Sulphonates 4 Bismutnates
Galvanized iron sheets have a coating of 1 Tin lead 2 Zinc 3 Chromium 4 Lead
What is the Ecology ?
Which of the following was to be discovered first in the chromo sphere of the sun? 1 Xenon 2 Helium 3 Neon 4 Krypton