While cooking, if the bottom of the vessel is getting blackened on the outside, it means that

A molecule of ammonia (NH₃) has

Oils on treating with hydrogen in the presence of palladium or nickel catalyst form fats. This is an example of

The soap molecule has a

Chlorine reacts with saturated hydrocarbons at room temperature in the

Pentane has the molecular formula C₅H₁₂ . It has

Which of the following does not belong to the same homologous series?

Which of the following represents saponification reaction?

The first member of alkyne homologous series is

The correct electron dot structure of a water molecule is

Draw the structure of ethanol molecule.

Write the name and formula of the 2ndmember of homologous series having general formula CnH_2n-2

Which element exhibits the property of catenation to maximum extent and why?

Name the process by which unsaturated fats are changed to saturated fats.

Write the formula of functional group:
(i) aldehyde, (ii) alcohol

Why is the conversion of ethanol to ethanoic acid an oxidation reaction?

How can ethanol and ethanoic acid can be differentiated on the basis of their physical and chemical properties?

In electron dot structure, the valence shell electrons are represented by crosses or dots.
a) The atomic number of chlorine is 17. Write its electronic configuration
b) Draw the electron dot structure of chlorine molecule

An organic compound 'A' is an essential constituent of wine and beer. Oxidation of 'A' yields an organic acid 'B' which is present in vinegar. Name the compounds 'A' and 'B' and write their structural formula. What happens when 'A' and 'B' react in the presence of an acid catalyst? Write the chemical equation for the reaction. 

What are isomers? Draw the structures of two isomers of butane, C₄H₁₀. Why can't we have isomers of first three members of alkane series?

An organic compound A on heating with concentrated H₂SO₄ forms a compound B which on addition of one mole of hydrogen in presence of Ni forms a compound C. One mole of compound C on combustion forms two moles of CO₂ and 3 moles of H₂O. Identify the compounds A, B and C and write the chemical equations of the reactions involved.

State the reason why carbon can neither form C⁴⁺ cations for C^4- anions, but forms covalent compounds. Also state reasons to explain why covalent compounds:
(a) are bad conductors of electricity?
(b) have low melting and boiling points