Chemistry Question Bank

Which of the following compound is covalent?

Find out the correct Lewis symbol for the atom carbon among the following options.

The group valence of the element is generally equal to the

Lewis introduced simple notations to represent valence electrons in an atom called.

The number of dots around the Lewis symbol represents:

The important condition(s) for Lewis dot structure of covalent compounds is/are

The Lewis dot structures can be written by adopting the following steps : I. The total number of electrons required for writing the structure are obtained by adding the valence electrons of the combining atoms. II. Kn…

According to Lewis and Kossel approach, which of the following molecules has complete octet of the central atom?

Match the following species of Column I with information given in Column II choose the correct option from the codes given below. Column I Column II A. BCl3 1. Odd electron molecules B. SF6 2. Incomplete octet C. NO2 …

Atoms can combine either by transfer of valence electrons from one atom to another or by sharing of valence electrons in order to have an octet in their valence shells. This is called.

Lewis postulated that atoms achieve the stable octet when they are linked by

According to Kossel and Lewis approach, the outer shell can accommodate a maximum of …X… electrons. Here, X refers to

Kossel and Lewis approach was based on the

The attractive force which holds various constituents (atoms, ions etc.) together in different chemical species is called a

In esterification, OH ion for making H2O comes from:

Consider the following acids : (i) F3C –– COOH, (ii) CH3COOH, (iii) C6H5COOH, (iv) CH3CH2COOH Correct order of pKa value is (AIIMS 2019)

The reaction that does not give benzoic acid as the major product is (NEET 2019) (a) (b) (c) (d) Ans. (c) Sol. Primary aromatic alcohols on reaction with pyridinium chlorochromate (PCC) (a mid oxidising agent) forms a…

The product of acid hydrolysis of (P) and (Q) can be distinguished by (JIMPER 2017)

Which of the following reagents is used to distinguish phenol and benzoic acid? (AIIMS 2017)

The correct order of strengths of the carboxylic acids (NEET 2016) Is

In the following reaction, LiAlH H O C H COOCH A B -> A and B are respectively (CPMT 2016)

i NH NaOBr ii Δ C H COOH P -> -> i Conc.H SO ii Heat to460K Q R -> , R is (KCET 2014)

Identify the compound D in the above mentioned series of reactions. (MHCET 2014) (a) Carboxylic Acid and Its Derivatives (b) (c) (d) Ans. (b) Sol. The complete series of reaction can be represented as :

Write the IUPAC name of the following compounds. (MHCET 2014)

Methyl acetate will be obtained by reacting CH3OH with (Manipal 2014)