Inter (Part-II) Dera Ghazi Khan Board 2013
Chemistry
Part II (Objective Type)
Time Allowed: 20 Minutes 
Max. Marks: 17

Note: You have four choices for each objective type question as A, B, C and D. The choice which you think is correct; fill that circle in front of that question number. Use marker or pen to fill the circles. Cutting or filling two or more circles will result in zero mark in that question.

Question #1
Circle the correct option i.e. A/B/C/D. Each part carries one mark.

• Keeping in view the size of the atoms , which order is correct one

(A) Mg>Sr
(B) Ba>Mg
(C) Lu>Ce
(D) Cl>l

• Which of the following does not belong to alkaline earth metals

(A) Be
(B) Ra
(C) Ba
(D) Rn

• Tincal is mineral of

(A) Al
(B) B
(C) Si
(D) C

• The brown gas formed when metal reduces HNO₃ to

(A) NO
(B) N₂0
(C) NO₂
(D) N₂O₄

• Which is the strongest acid

(A) HCIO
(B)HC1O₂
(C)HC1O₃
(D) HCIO₄

• Which one of the following is a typical transition element

(A) Sc
(B) Y
(C) Ra
(D) CO

• Linear shape is associated with which set of Hybrid orbital

(A) SP
(B) SP²
(C) SP³
(D) dSP²

• Formula of chloroform is

(A) CH₃Cl
(B) CCl₄
(C) CH₂Cl₂
(D) CHCl₃

• Which compound is more reactive one

(A) Benzene
(B) Ethene
(C) Ethane
(D) Ethyne 

• When CO₂ is made to react with ethyle magnesium iodide followed by acid hydrolysis the product formed is

(A) Propane
(B) Propanoic acid
(C) Propanal
(D) Propanol

• Which enzyme is not involved in fermentation of starch

(A) Diastas
(B) Zymase
(C) Urease
(D) Invenase

• Which of the following reagents will react with both aldehydes and ketones

(A) Grignard's reagent
(B) Tollen's reagent
(C) Feling's reagent
(D) Benedict reagent

• Which of the following compounds will not give iodoform test with l₂/ NaOH

(A) Acetaldehyde
(B) Acetone
(C) Butanone
(D) 3 – Pentanone

• Which reagent is used to reduce a carboxylic group to an alcohol

(A) H₂/ Ni
(B) H₂/ pt
(C) NaBH₄
(D) LiAIH₄

• The reaction between fat and NaOH is called

(A) Esterification
(B) hydrogenation
(C) Fermentation
(D) Saponification

• Which one is not a calcarious material

(A) Lime
(B) Clay
(C) Marble
(D) Marine Shells

• A single chloride free radical can destroy how many ozone molecule

(A) 100
(B) 100000
(C) 10000
(D) 10

Inter (Part-I) Dera Ghazi Khan Board 2013
Chemistry
Part I (Subjective)
Time Allowed: 2.10 Hours 
Max. Marks: 83 

Section I

Q2 Write short assayers any Eight (8) questions of the following 16

• Write down any two difference between Hydrogen and alkali metals
• Why metallic character increases from top to bottom in a group of meals ?
• What happens when (i) Lithiu n carbonate is heated (ii) Lithium hydroxide is heated to red hot
• Why 2 % gypsum is added in he cement ?
• Why lime is added to an acidic soil?
• What is Aqua Regis? How it cissolves gold?
• Write down any two uses of HNO₃
• Write down two dissimilarities between oxygen and sulphur
• What is " Iodized salt "?
• What are Interstitial compounds ?
• What is Markownikov's Rule I Give one example
• How Raney Nickel is prepare ? Give one reaction M which Raney Nickel is used

Q3 Write short answers say Eight (8) questions of the following 16

• Boric acid is monobasic acid explain it.
• Compare the structure of carbon dioxide CO₂ with silicon Dioxide SiO₂
• Define cracking , name the type s of cracking
• What is Cis-tran Isomerism et plain with help den example
• Define Resonance, Draw different contributing structures of benzene
• How will you prepare m-chloro-nitrobenzene from benzene
• Define nucleophile give two examples and also tell the difference between attacking and Leaving nucleophile
• How Primary alcohol can be prepare by Grignard reagent ?
• What are alcohol how these are classify?
• Discuss the reactivity of diethyl ether
• Write the reaction mechanism when ethyl alcohol react with acetic acid
• Define amino acid , Explain Z writer ion

Q4 Write short answers any Six (6) questions of the following 12

• How formalin is prepared on the commercial scale from methyl alcohol?
• Addition of HCN on aldehydes and ketose is a base catalysed reaction
• How iodoform is prepared from ethanol and acetaldehyde?
• Tollen,s Test is also called sober mirror test Justify it
• What is condensation polymerization. Give the reaction for the formation of polyester
• What are carbohydrates? why are they called so
• Why nitrogen is important for plants
• What are commonly used bleaching agents in paper manufacture
• Which oxides of nitrogen are air pollutants. What are their sources 

SECTION II

Note: Attempt any Three questions from this section 8*3 =24

Question #5
(a) Define Ionization energy. Discuss it's variation within a group and across the period 4
(b) How sodium metal is prepared on commercial scale by Down's method 4

Question #6
(a) Explain the term Reforming of petroleum 4
(b) Explain the mechanism of the reaction of phenyl hydrazine with Acetone 4

Question #7
(a) Starting from ethyne , how would you prepare glyoxal and benzene 4
(b) Write a note on SN₂ reaction 4

Question #8
(a) What are Friedal –Craft's reaction. Give mechanism with an example of Friedal –Crafts "
(b) Write two methods for thesynthesis of amino acids

Question #9
(a) Describe galvanizing process
(b) Write a note on smog