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The following has zero valency:
(1) Sodium
(2) Beryllium
(3) Aluminium
(4) Krypton
Ans: Krypton
1.First find the maximum number of carbons chain.Give it to as a parent name. 2.Next find functional groups and give numbering.(Functional group must get minimum number) 3.Ne
An adiabatic air compressor is to be powered by a direct-coupled adiabatic steam turbine that is also driving a generator. Steam enters the turbine at 12.5 MPa and 500oC at a rate
There are 13 electrons in an element whose nucleus comprise 14 neutrons. Obtain atomic number and atomic weight of this element. If atomic weight of the isotope of above element is
The radius of electron in the first excited state of hydrogen atom is: (1) a 0 (2) 4a 0 (3) 2a 0 (4) 8a o
What are the basic physical and chemical properties of this group
comprision between velocity constant constant
define
Uses of Alkenes (i) Alkenes are used for the manufacture of polythene - a plastic material; (ii) Alkenes are used for artificial ripening of fruits; (iii) Alkenes are us
The radius of which of the following orbit is same as that of the first Bohr's orbit of hydrogen atom: (1) He + (n= 2) (2) Li 2+ ( n= 2) (3) Li 2
what is fehlings test and its reagent?
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