Download App

Haloalkanes and Haloarenes — Chemistry STD 12 Science — Question

Gujarat BoardEnglish MediumSTD 12 ScienceChemistryHaloalkanes and Haloarenes2 Marks
Question
Write down physical state, colour and ordour of halogen compound.
✓

Answer

→ Alkyl halides are colourless when pure.
→ However, bromides and iodides develop colour when exposed to light.
→ Many volatile halogen compounds have sweet smell.
→ Methyl chloride, methyl bromide, ethyl chloride and some chlorofluoromethanes are gases at room temperature. Higher members are liquids or solids.

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Explore more

More "2 Marks Questions" from Haloalkanes and Haloarenes→Haloalkanes and Haloarenes — all question types→Chemistry STD 12 Science question papers→Gujarat Board STD 12 Science question papers→Gujarat Board question paper generator→

Similar questions

Explain giving reason:

Transition metals and their many compounds act as good catalyst.

→
Predict the products of electrolysis in each of the following:
An aqueous solution of AgNO3 with platinum electrodes.
→
Note: In the following questions a statement of assertion followed by a statement of reason is given. Choose the correct answer out of the following choices.
  1. Both assertion and reason are true and the reason is the correct explanation of assertion.
  2. Both assertion and reason are true and the reason is not the correct explanation of assertion.
  3. Assertion is true but the reason is false.
  4. Both assertion and reason are false.
  5. Assertion is false but reason is true.
Assertion: Cu is less reactive than hydrogen.
Reason: $\text{E}^{\ominus}_{\text{Cu}^{2+}/\text{Cu}}$ is negative.
→
Give examples and suggest reasons for the following features of the transition metal chemistry:
A transition metal exhibits highest oxidation state in oxides and fluorides.
→
Amino acids behave like salts rather than simple amines or carboxylic acids. Explain.
→
Which metal in the first series of transition metals exhibits +1 oxidation state most frequently and why?
→
Compare the chemistry of actinoids with that of the lanthanoids with special reference to:
Oxidation state
→
Nitric oxide, NO, reacts with oxygen to produce nitrogen dioxide.
$\text{2NO(g)+O}_2(\text{g)}\rightarrow\text{2NO}_2\text{(g)}$
The rate law for this reaction is:
$\text{Rate = k}[\text{NO]}^2[\text{O]}_2$
Propose a machanism for the reaction.
→
The molar mass of a volatile substance cannot be determined from boiling point elevation. Why?
→
In a reaction if the concentration of reactant A is tripled, the rate of reaction becomes twenty seven times. What is the order of the reaction?
→