List of top Chemistry Questions asked in TS POLYCET

Law of octaves was proposed by

Which one of the following atoms is smaller in size?

Number of bond pairs and lone pairs in the valence shell of nitrogen in NH\(_3\)

If the hydrogen atom of -COOH gets replaced by 'R' (alkyl group) _______________ are obtained.

The hydrocarbons containing only single bonds between carbon atoms are called

Maximum no. of electrons in a subshell is equal to

In smelting the ore it is

Which one of the following is used for disinfecting drinking water?

Galena is an ore of

The process of conversion of starches and sugars to C2H5OH is called

Which of the following is an unsaturated compound?

The colour of methyl orange indicator in basic solution is

Quantum mechanical model of the atom was developed by

Number of unpaired electrons present in carbon atom is

Double bond present in

The metal that occurs in the free form (native) is

The total number of inner transition elements in the modern periodic table is

Identify the correct ascending order of energies of forbitals.

What is the molar ratio of hydrogen and oxygen in the formation of water ?

How many molecules of hydrogen are present in 10 g of hydrogen ?

Which one of the following pair belongs to same homologous series?

"Pairing of electrons in orbitals starts only when the available degenerate orbitals are singly filled" is stated by

General formula of alkynes

The gas liberated when metallic sodium reacts with ethanol

Which of the following quantum numbers describes the spatial orientation of orbitals?