List of practice Questions

If the radius of a sphere is tripled, then its volume will become
If two circles touch internally, then the number of their common tangents is
The length of tangent from a point 15 cm away from the centre of a circle of radius 9 cm is
If \( z = x + iy \), then the equation \( |z + 1| = |z - 1| \) represents: 
\(△ABC∼△PQR;\) \(\frac {AB}{PQ}=\frac {BC}{QR}=\frac {AC}{PR}=k\), then \(k\) value
As per Moeller chart, the correct ascending order of their energies of the following orbitals is
The names of the sub-shells present in M shell (n= 3) are
The number of water molecules present in one formula unit of gypsum is
Which one of the following types of medicine is used for treating indigestion?
The colour of methyl orange in alkaline medium (basic) is
The chemical name of baking soda is
A thin layer of 'X' metal is used as galvanizing on iron surface to protect from rusting of iron. The name of X metal is
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