Which type of fire extinguisher is used for petroleum fire? 1 Foam type 2 Soda acid type 3 Powder type 4 None of these

8 Answers   CADD, SSC,

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Diamond is harder than graphite because of 1 Difference of layers of atoms 2 Tetrahedral structure of diamond 3 Difference of crystalline structures 4 None of these

3 Answers  

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if appointed at aryabhatt school for how long should we expect you work with us

0 Answers  

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atoms are composed of Electrons & Protons or Electrons & Protons ?

3 Answers  

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Which one of the following is the petroleum wax? 1 Bees wax 2 Carnauba wax 3 Paraffin wax 4 Jojoba wax

1 Answers  

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methane is not present in

3 Answers   Stenographer,

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Water is neither acidic nor alkaline because 1 It cannot accept or donate protons 2 It boils at a high temperature 3 It can dissociate into equal number of hydrogen ions 4 It cannot donate or accept electrons

2 Answers   ACIO,

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The Purest form of water can be obtained from:- I) a deep tube well II) a running stream III) a hot water spring IV) a heavy shower of rain

0 Answers  

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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.

0 Answers   Logica CMG,

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In an atomic explosion, enormous energy is released which is due to the 1 Conversion of neutrons into protons 2 Conversion of chemical energy into nuclear energy 3 Conversion of mass into energy 4 None of these

2 Answers   AHH, CMRL,

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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

2 Answers  

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is there any device to convert to mechanical energy into electrical energy

3 Answers  

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