The ratio of pure gold in 18 carat gold is 1 60% 2 75% 3 80% 4 100%

3 Answers   DSSSB-Delhi Subordinate Service Selection Board,

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Which of the following is the basis of modern periodic table? 1 Atomic mass 2 Atomic number 3 Atomic size 4 Atomic volume

1 Answers  

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The hydrogenation of the vegetables oils takes place in the presence of finely divided 1 Aluminium 2 Charcoal 3 Silica 4 Nickel

1 Answers  

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What is the Genetics?

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Atoms of an element differ from those of all other elements in 1 Atomic number and electronic configuration 2 Atomic number and number of valence electrons 3 Number of neutrons and electronic configuration 4 None of these

2 Answers  

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Epoxy resins are used as 1 Moth repellants 2 Insecticides 3 Detergents 4 Adhesives

1 Answers  

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when u step up the voltage using atransformer ,,,then what about the secondary current will it be increased or decreased ?

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why our head's weight not feel our body?

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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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why we are not measure the turbidity in mg/lit?

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PVC is obtained by the polymerization of 1 Propene 2 Vinyl chloride 3 Styrene 4 Acetylene

2 Answers  

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Chemical formula for water glass is 1 Na2Sio3 2 Al2O3 3 NaA1O2 4 CaSiO3

3 Answers  

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