Q. The names of the scientists, Newlands, Mandeleev and Meyer are associated with the development of
1) atomic structure
2) metallurgy
3) periodic table of elements
4) discovery of elements
Q. The most malleable metal is
1) platinum
2) silver
3) iron
4) gold
Q. The most inexpensive and commonly used variety of glass is called soda glass. it is called so because it
1) was used initially for making bottles for soda(Carbonated drink)
2) is made using soda(Sodium carbonate)
3) was initially used for storing sodium carbonate
4) is made using soda lime
Q. The most important ore of aluminium is
1) bauxite
2) magnetite
3) haematite
4) monazite
Q. The most electropositive elements among the following is
1) Na
2) Ca
3) K
4) Cs
Q. The most electronegative element among sodium, bromium, fluorine and oxygen is
1) sodium
2) bromium
3) fluorine
4) oxygen
Q. The most commonly used bleaching agent is
1) alcohol
2) carbon dioxide
3) chlorine
4) sodium chloride
Q. The molecular formula of phosphorus is
1) p1
2) p2
3) p3
4) p4
Q. The method that cannot be used for removing permanent hardness of water is
1) adding sodium carbonate
2) distillation
3) adding caustic soda
4) boiling
Q. The method of concentrating the ore which makes use of the difference in density between ore and impurities is called
1) Liquation
2) Leaching
3) Levigation
4) Magnetic Separation
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