A mixture containing the following four compounds is extracted with 1 M HCl. The compound that goes to aqueous layer is :
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The area (in sq. units) of the quadrilateral formed by the tangents at the end points of the latera recta to the ellipse 9x2+5y2=1, is:
Let C be the circle with centre at (1, 1) and radius = 1. If T is the circle centred at (0, y), passing through origin and touching the circle C externally, then the radius of T is equal to
The angle between the lines whose direction cosines satisfy the equations l+m+n=0and l2=m2+n2is
In the reaction : the product E is
Higher order (>3) reactions are rare due to :
A complex number z is said to be unimodular if . Suppose z1and z2are complex numbers such that 2−z1z2z1−2z2is unimodular and z2is not unimodular. Then the point z1lies on a :
In which of the following reactions H2O2 acts as a reducing agent ?
A compound with molecular mass 180 is acylated with CH3COCl to get a compound with molecular mass 390. The number of amino groups present per molecule of the former compound is: