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What are the examples of radiation hazards
When a result of barium nitrate and a solution of copper(II) sulphate are mixed a chemical reaction produces solid barium sulphate which sinks to the bottom and a solution of coppe
Anomalous behaviour of aluminium
The first use of quantum theory to explain the structure of atom was made by: (1) Heisenberg (2 )Bohr (3) Planck (4) Einstein Ans: Bohr
what will you observe if you freeze water at 4 degree celcious
Bohr's radius can have: (1) Discrete values (2) +ve values (3) - ve values (4) Fractional values Ans: +ve values
In early Greece, water was considered one of the four basic "elements" (earth, wind, and fire as the others) in the universe. With the discovery of more basic constituents, the ter
Cast iron is not appreciably malleable at any temperature as cast. The carbon in cast irons may be present in the form of iron carbide or free graphite. White cast iron contains ce
Charectaristic of covalent bond
What are the various types of point defects? How are they caused? (i) Vacancies: This refers to a missing atom or a vacant atomic site because of absence of a matri
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