List of top Chemistry Questions asked in TS POLYCET

Which of the following pair of atomic numbers indicates the s-block elements?

4f elements are called as

Washing Soda is used in ____ .

Compound formed when excess \(CO_2\) is passed through lime water

\(A Na+BHO→ C NaOH + DH2,\) in this equation the values of \(A, B, C \) and \(D\) are 

Maximum number of electrons present in an orbital of atom is

In endothermic reaction, heat is

Identify an acidic flux among the following.

Identify the salt in the following.

Bases can give _____ ions in water.

Which one of the following metal occurs in the native form?

The more reactive metal in the activity series is

Which of the following process is used for the purification of crude metal?

Which of the following is a non metal?

Which is the least electronegative element among the following?

Solution with pH less than 7 is

The carbonate ore among the following is

The total number of atomic orbitals in third shell of an atom

The classification of elements which is based on atomic number is

Which one of the following electromagnetic radiation has more frequency?

Order of energy of orbitals

Four quantum numbers of valence electron of sodium

Mixing acid to water is

Bleaching Powder is formed from

Colour of anhydrous \(CuSO_4\) is