Answer / sankar

iron is not radioactive because it does not emit neutrons.
this is because of the strong nuclei force between the
protons and neutrons.

A substance which changes readily into vapor without heating is called 1 Efflorescent 2 Synthetic 3 Volatile 4 Effervescent

1 Answers   HLL,

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The element found on the surface of the moon is 1 Tin 2 Tungsten 3 Tantalum 4 Titanium

4 Answers   RRB,

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The two elements that are frequently used for making transistors are 1 Boron and aluminium 2 Silicon and germanium 3 Iridium and tungsten 4 Niobium and columbium

2 Answers  

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Why sun seems to be a red colour while sun-rising and sun- setting?

1 Answers  

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Explain about the methods of sterilization of DMEM?

1 Answers  

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What is one light hour?

0 Answers  

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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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When was the first american rocket launched?

0 Answers  

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Which of the following substances undergoes chemical change on heating? 1 Sodium chloride 2 Silica 3 Lead nitrate 4 Platinum wire

2 Answers  

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what would be the fate of life on earth 10 yrs down the lane.

0 Answers  

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The gas usually filled in the eletric h\bulb is 1 Hydrogen 2 Oxygen 3 Nitrogen 4 Carbon dioxide

2 Answers  

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Which of the following elements is not-radioactive? 1 Uranium 2 Thorium 3 Plutonium 4 zirconium

3 Answers   ACC,

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