Download App

Organic Chemistry — Chemistry STD 10 — Question

ICSE BoardEnglish MediumSTD 10ChemistryOrganic Chemistry1 Mark
MCQ
Halogenation of alkane can be carried out in :
  • A
    Dark
  • B
    Bright light
  • ✓
    UV light
  • D
    Diffused sunlight
✓

Answer

Correct option: C.
UV light
(c) UV light
Explanation: The halogenation of alkanes is typically carried out in the presence of UV (ultraviolet) light. The ultraviolet light or sunlight provides the energy needed to break the chlorine-chlorine bond (in the case of chlorination) or the bromine-bromine bond (in the case of bromination), allowing the halogen to react with the alkane. This process is initiated by the energy from light, and it proceeds through a free radical mechanism. The presence of light is essential for initiating the reaction.
For example, halogenation of methane with chlorine is given as
$CH_4+Cl_2 \xrightarrow{\text { diffused sunlight}} CH_3 Cl+HCl$

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 "MCQ" from Organic Chemistry→Organic Chemistry — all question types→Chemistry STD 10 question papers→ICSE Board STD 10 question papers→ICSE Board question paper generator→

Similar questions

How many of the following compounds will give black spongy mass on reaction with concentrated sulphuric acid?
Glucose, cellulose, table salt, cane sugar, baking soda, fructose, starch, DNA
→
The following reactions occur in Hall and Heroult's experiment. The $X, Y$, and $Z$ here respectively are:
$Na_3 AlF_6-3 Na^{+}+Al^{3+}+X$
$CaF_2-Y+2 F^{-}$
$Al_2 O_3 \square 2 Al^{3+}+Z$
→
A metal which does not react with dil. sulphuric acid, but forms sulphur dioxide when heated with conc. sulphuric acid is :
→
What are the constituent elements of duralumin?
→
A mixture of ammonia and oxygen gas at 900°C reacts in the presence of platinum to form ________ gas and water.
→
The electrolyte used during silver plating of copper article is:
→
Nitric acid on standing develops brownish colour which may be attributed to the presence of
→
The chemical name of bauxite ore is.
→
Which of the following compounds reacts with dilute sulphuric acid and produces a colourless gas with a rotten egg-like smell?
→
Four grams of caustic soda contains :
→