why nitrogen is about 70%(i.e.)highest percentage in environment

1 Answers  

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Write about recreational function of Science

0 Answers   Mahatma Gandhi University,

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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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WHAT IS THE FUNCTION OF NIKEL IN CHEMICAL REACTION

2 Answers   Cadila,

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The isotope of uranium capable of sustaining chain reactions is 1 U-235 2 U-238 3 U-239 4 None of these

1 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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‘No two electrons in an atom can have the same set of four quantum numbers’ is 1 Bohr’s law 2 Aufbau principle 3 Newton’s law 4 Pauli’s exclusion principle

1 Answers   Pipe Corporation,

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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 metallic constituents of hard water are 1 Magnesium, calcium and tin 2 Iron, tin and calcium 3 Calcium, ,magnesium and iron 4 None of these

1 Answers  

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the basic approach to science was established by:

0 Answers   APPSC, Government,

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Describe the evolution of science and its impact on society

0 Answers   Mahatma Gandhi University,

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Which of the following metals can displace hydrogen from dilute acids? 1 Zinc 2 Gold 3 Copper 4 Silver

1 Answers   Petit Seminaire,

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