List of top Chemistry Questions asked in Andhra Pradesh Polytechnic Common Entrance Test

Which of the following set of quantum numbers is not correct?
The possible I values for a given n value are
The rule which describes the electron distribution in degenerate orbitals of an atom is
The Quantum mechanical model of atom was proposed by
The correct order of energies for the electromagnetic spectrum is
The chemical name of plaster of Paris is
One mole of\(H_2\) gas contains how many molecules? 
The tarnishing of silver spoon in presence of moisture is due to formation of
Which of the following is an example for neutralization reaction?
The colour of methyl orange indicator in HCl is
Which of the following is an example of acid?
Electrolysis of aqueous NaCl solution produces
The first synthesized organic compound in laboratory is
The IUPAC name of IUPAC name
The organic compound with R---- COO-----R' functional group is prepared from
For extraction of highly reactive metal compounds from their ores, some impurities are added during the electrolysis process. The role of impurity is
Electronic configuration of C in its exited state is
The value of x in the following chemical reaction is
\(C_3H_8 + xO_2 \rightarrow YCO_2 + zH_2O\)
Lead nitrate on reaction with potassium iodide gives yellow precipitate. The yellow color is due to
\(Pb(NO_3)_2 + 2KI \rightarrow PbI_2 + 2KNO_3\)
Match the following
aHaematitei\(HgS\)
bCinnabarii\(Fe_3O_4\)
cHornsilveriii\(Fe_2O_3\)
dMagnetiteiv\(AgCl\)
Heating of carbonate ore in absence of air is called
Element 'A' forms tripositive ion and element 'B' forms dinegative ion. The chemical formula of the compound formed with A and B will be
'Sigma bond' is formed by
The shape of molecule with 4 bond pairs and zero lone pair is 4
Which of the following metals is least reactive?