Science (English Medium) इयत्ता १२ - CBSE Question Bank Solutions for Chemistry

Give the IUPAC name of the following compound:

\[\ce{ClCH2C ≡ CCH2Br}\]

Classify the following as primary, secondary and tertiary alcohol:

H₂C = CH – CH₂OH

Classify the following as primary, secondary and tertiary alcohol:

CH₃ – CH₂ – CH₂ – OH 

Classify the following as primary, secondary and tertiary alcohol:

Classify the following as primary, secondary and tertiary alcohol:

Classify the following as primary, secondary and tertiary alcohol:

Write the structure of 3-methyl butanal

What happens if external potential applied becomes greater than E°cell of electrochemical cell?

Account for the following : Nitrogen does not form pentahalide.

Write the structure of 2-methylbutanal.

Why are solids rigid?

Why do solids have a definite volume?

Classify the following as amorphous or crystalline solids:

Polyurethane, naphthalene, benzoic acid, teflon, potassium nitrate, cellophane, polyvinyl chloride, fibre glass, copper.

Why is glass considered a super cooled liquid?

Refractive index of a solid is observed to have the same value along all directions. Comment on the nature of this solid. Would it show cleavage property?

Define the term ‘amorphous’.

What makes a glass different from a solid such as quartz? Under what conditions could quartz be converted into glass?

‘Stability of a crystal is reflected in the magnitude of its melting points.’ Comment. Collect melting points of solid water, ethyl alcohol, diethyl ether and methane from a data book. What can you say about the intermolecular forces between these molecules?

Can you store copper sulphate solutions in a zinc pot?

Arrange the following metals in the order in which they displace each other from the solution of their salts.

\[\ce{Al, Cu, Fe, Mg}\] and \[\ce{Zn}\]