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Merit Science Academy Faisalabad: Chemistry 2 Year

Merit Science Academy chemistry exam for 2nd year students covering topics on alkanes, alkenes, alkynes, and their reactions. The exam consists of multiple choice questions testing the students' knowledge of product identification and reaction types. It also includes short answer questions requiring explanations of acidity, reactivity, preparation methods, and reaction mechanisms of various organic compounds.

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78 views1 page

Merit Science Academy Faisalabad: Chemistry 2 Year

Merit Science Academy chemistry exam for 2nd year students covering topics on alkanes, alkenes, alkynes, and their reactions. The exam consists of multiple choice questions testing the students' knowledge of product identification and reaction types. It also includes short answer questions requiring explanations of acidity, reactivity, preparation methods, and reaction mechanisms of various organic compounds.

Uploaded by

Shakaib
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
Available Formats
Download as DOCX, PDF, TXT or read online on Scribd
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Merit Science Academy Chemistry

Faisalabad 2ndYear
Marks 40 Time 45 min.

1: Tick the correct option. (10)

Sr # Question (A) (B) (C) (D)


When isopropyl chloride is treated with Propane Propene Propyne Isobutene
1 Zn/HCl the product obtained is
Decarboxylation is carried out by Alcoholic KOH Zn dust Soda lime Ni catalyst
2
Kolb’s reaction involves the electrolysis Sodium acetate Sodium succinate Sodium maleate All
3 of
Reaction not given by ethene . Addition Polymerization Substitution Combustion
4
The product obtained by heating CH4 CH3- CH3 CH2=CH2 C2 H2
5 CH3COOH with soda lime
Formula of chloroform is.
6 CH3Cl CCl4 CH2Cl2 CHCl3
Preparation of vegetable ghee
7 Halogenation Hydrogenation Hydroxylation Dehydrogenation
involves.
Synthetic rubber is made by
8 Chloroform Acetylene Divinylacetylene Chloroprene
polymerization of.
Ethyne has odour.
9 Onion like Garlic like Mustard like None
Ozone reacts with ethene to form.
10 Glycol Alkanes Chloroform Ozonoid
2: Write short answers of any 10 of the following questions. (20)

i. Write a short note on acidity of ethyne.


ii. How does ethyne alkaline KMnO4?
iii. How may ethene be converted into ethyl alcohol?
iv. Describe different methods for the preparation of alkenes.
v. Why alkanes are called parafins?
vi. How will you convert aldehydes and ketones into corresponding alkanes?
vii. What is Markonikov’s rule?
viii. Why alkenes are more reactive than alkanes?
ix. Why acetylene is acidic in nature?
x. How mustard gas is prepared? Give its uses.

3: Give the mechanism for addition of halogens to alkanes. (05)

4: Write the reactions of followings with alkynes (a) KMnO4 (b) water (c) ammonia (d) HBr (05)

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