'which country has 6 months night and 6 months day'
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whate is the difference b/w aflatoxions&ocharatoxions
who design the intelligent designer of the so called Intellegent design???
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
Which of the following is not a compound? 1 Silica 2 Red lead 3 Slaked lime 4 Black lead
The property of a substance to absorb moisture from the air on exposure is called 1 Osmosis 2 Dessication 3 Efflorescence 4 Deliquescence
What are soaps? 1 Salts of silicates 2 Esters of heavy fatty acids 3 Sodium or potassium salts of heavier fatty acids 4 Mixture of glycerol and alcohols
The first synthetic fiber made by man was 1 Rayon 2 Nylon 3 Polyester 4 Terycott
Which are the units of functioning in vssc?
Quartz crystals normally used in quartz clocks etc. is chemically 1 Sodium silicate 2 Germanium oxide 3 Silicon dioxide 4 None of these
atoms are composed of Electrons & Protons or Electrons & Protons ?
Please can someone tell me, how many times during a 12 hour period, do the hands of a clock face opposite each other? I believe its 11. Also, would this be the same, no matter WHAT the starting time? i.e. if the 12 hour period started at 6 o clock, would it still be 11 times? Many thanks for your help.
Potassium nitrate is used in 1 Salt 2 Glass 3 Fertilizer 4 Medicine