List of practice Questions

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

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

a	Haematite	i	\(HgS\)
b	Cinnabar	ii	\(Fe_3O_4\)
c	Hornsilver	iii	\(Fe_2O_3\)
d	Magnetite	iv	\(AgCl\)

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

The orbital with highest penetration power is

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?

A clock shows 3 hr 5 min. When seen through a plane mirror, the time appears to be

If T₁ and T₂ are the temperatures of the hotter and colder water samples respectively and Tis the final temperature of their mixture, then

Condensation is a change of phase from

Which among the following statements on temperature is false?