Permanent hardness of water, due to sulphates of the metal, can be destroyed by the use of 1 Nitrates 2 Zeolites 3 Sulphontes 4 None of these

2 Answers  

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The combustible material at the tip of a safety match sitck is 1 Sulphur 2 Manganese dioxide 3 Phosphorus 4 Antimony sulphide

2 Answers  

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Science as a social endeavor .Explain

0 Answers   Mahatma Gandhi University,

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Which are the two reactors at the indira gandhi centre for atomic research ( igcar )?

0 Answers  

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Which synthetic fiber possesses a ‘drip-dry’ property? 1 Rayon 2 Nylon 3 Silk 4 Terylene

6 Answers  

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where the 3rd earthsummit held

3 Answers   Infosys,

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What is the Ecology ?

1 Answers  

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Which of the following is used to coagulate synthetic fibers from solution? 1 Hydrochloric acid 2 Sulphuric acid 3 Nitric acid 4 None of these

1 Answers  

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Ozone attacks 1 Mercury and silver 2 Copper 3 Silver and iron 4 None of these

2 Answers  

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Which metal is used for Galvanisation of iron?

13 Answers   ncert, TCS, TNPSC Tamil Nadu Public Service Commission,

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Which of the following roofs provide better protection against heat? 1 Cement slab 2 Asbestos sheets 3 Reinforced concrete 4 None of these

1 Answers  

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Actinides are the elements with atomic numbers from 1 36 to 43 2 89 to 103 3 97 to 114 4 101 to 115

1 Answers  

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