List of practice Questions

CH3COOH is an organic
Which one of the following compound hydrocarbons can show isomerism?
C2H5OH on oxidation with alkaline KMnO4 gives the compound A, which on further oxidation gives the compound B. The names of A, B respectively are
The IUPAC name of the compound CH3---CH2--CH=CH2 is
The molecular formula of cyclopentane is
Graphite is a good conductor of electricity because of
The name of complex ion formed when Ag2S is dissolved in KCN solution is
The most suitable method for concentration of sulphide ore is
Match the following :
Ore  Formula
AFe3O4IMagnesite 
BMgCO3IIMagnetite
CZnSIIICinnabar
DHg2SIVZinc Blende
Which of the molecules has highest bond length ('A')?
The shape of methane molecule is
The type of hybrid orbital exist at Be atom in BeCl2 is
The covalent bonds present in nitrogen molecule are
An element \(\\_{12} M^{24} \) forms ionic compound with another element 'Y. Then the charge on the ion formed by M is 
The element with highest electron affinity value among halogens is
The non-metal present in IVA (carbon family) is
The number of elements present in period 4th of long form of periodic table are
The correct order of electronegativity values of the following elements is
If the atomic weights of lithium and potassium respectively are 7 and 39, then the atomic weight of sodium as per Dobereiner's law of triads is
The maximum number of electrons that can be accommodated in the shell of an atom is
A double concave lens of refractive index 1.5 with its two spherical surfaces of radii R1 = 30 cm and R2 = 45 cm is kept in air. Its focal length is
A convex lens has a focal length of 10 cm. If u is the object distance, then the image distance is given by
The angle between the paraxial rays and principal axis is
A bird is flying vertically downwards the surface of water of a lake with constant speed. For a fish inside the water exactly below the bird, the bird appears to be
To examine the internal organs of a human body through light, the doctors use