List of practice Questions

The colour of methyl orange indicator in HCl is
Which of the following is an example for neutralization reaction?
The tarnishing of silver spoon in presence of moisture is due to formation of
One mole of \(H_2\) gas contains how many molecules? 
Lead nitrate on reaction with potassium iodide gives yellow precipitate. The yellow color is due to
\(Pb(NO_3)_2 + 2KI \rightarrow PbI_2 + 2KNO_3\)
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
The IUPAC name of IUPAC name
The first synthesized organic compound in laboratory is
Electronic configuration of C in its exited state is
Heating of carbonate ore in absence of air is called
Which of the following metals is least reactive?
Match the following
aHaematitei\(HgS\)
bCinnabarii\(Fe_3O_4\)
cHornsilveriii\(Fe_2O_3\)
dMagnetiteiv\(AgCl\)
The bond angle in H2O molecule is HO
The shape of molecule with 4 bond pairs and zero lone pair is 4
'Sigma bond' is formed by
Element 'A' forms tripositive ion and element 'B' forms dinegative ion. The chemical formula of the compound formed with A and B will be
Total number of elements in Newland's periodic table is
The orbital with highest penetration power is
Mendeleeff's periodic table is based on
According to Linus Pauling, the electronegativity values are based on
If 'a' is the thickness of the glass slab and 'b' is the vertical shift of an object through it, then refractive index of the glass slab is
When we sit at a camp fire, objects beyond the fire are seen swaying. The principle involved in it is
The magnification of an object of height 1 m using a spherical mirror is 1.5. The size of the image is
Which among the following is not a physical quantity?