SARGODHA BOARD 2014
PAPER CHEMISTRY
PART-2
Time: 20 MM.
(Group-1)
Marks: 17
(Objective Part)
Note: You have four choice 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.

• Which of the following has highest melting point?

(a) Aluminium
(b) Silicon
(c) Phosphorous
(d) Sulphur

• Which of following has the highest hydration energy?

(a) Li+
(b) Na+
(c) K+
(d) Mg++

• Which metal oxide is insoluble in water?

(a) MgO
(b) CaO
(c) SrO
(d) BaO

• Which is used in the leather industry?

(a) Borax
(b) Boric acid
(c) Boric oxide
(d) Tetra Boric acid

• Which metal is rendered passive by HNO3 due to formation of a film of metal oxide over the metal.

(a) Pt
(b) Sn
(c) Co
(d) Mn

• Which is second most abundant element in the universe?

(a) H
(b) He
(c) O
(d) C

• Which of the following is non typical transition metal?

(a) Fe
(b) Mn
(c) Zn
(d) Ni

• Ethers show the phenomenon of:

(a) Position isomerism
(b) Functional group isomerism
(c) Metamerism
(d) Chain isomerism

• In tertiary butyl alcohol, the tertiary Carbon is banded to:

(a) One H atom
(b) Two H atoms
(c) Three H atoms
(d) No H atom

• Which of the following is ortho and para directing group.

(a) -1
(b) -CHO
(c) -+NR3
(d) -COOH

• The most reactive alkyl halide is:

(a) Alkyl fluoride
(b) Alkyl Bromide
(c) Alkyl Chloride
(d) Alkyl iodide

• The most reactive alcohol when O-H bond break is:

(a) Tertiary alcohol
(b) Secondary alcohol
(c) Primary alcohol
(d) Methyl alcohol

• Cannizzaro reaction is not given by:

(a) Methanol
(b) Ethanol
(c) Benzaldehyde
(d) Trimethyl acetaldehyde

• The nature of lysine amino acid is:

(a) Acidic
(b) Basic
(c) Neutral
(d) Amphoteric

• Starch is:

(a) Monosaccharide
(b) Oligosaccharide
(c) Polysaccharide
(d) Protein

• The macronutrients are required in quantities ranging from

(a) 4 -40 kg per acre
(b) 10 -100 kg per acre
(c) 5 - 100 kg per acre
(d) 5 - 200 kg per acre

• Hard water contains:

(a) Ca and Mg salts
(b) Carbonates of Na & K
(c) Chlorides of Na & K
(d) Sulphates of al

SARGODHA BOARD 2014
PAPER CHEMISTRY
PART-2
Time: 3:10 Hours
(Group-1)
Marks: 83
(Subjective Part)
Section-I

Q.2 Attempt any EIGHT short questions.

• Why Ionization energy decreases down the group and increases along a period?
• The second electron affinity of an element is positive. Discuss.
• Why 2% gypsum is added in cement?
• Write the reaction of borax with H2SO4
• Write two uses of Silicones.
• Write the reaction of NaOH with Al2O3.
• Mention any four uses of Sulphuric acid.
• Enlist two similarities of Oxygen and Sulphur.
• What is aquaregia? How does it dissolve gold?
• Mention any four uses of bleaching powder.
• Why iodine has metallic lusture?
• What are freons and Teflon.

Q.3. Attempt any EIGHT short questions.

• Define coordination number and give two example.
• Write down the names and formulae of two ores of iron.
• Reforming is very important process in petroleum industry. Comment.
• What are hetrocyclic compounds? Give two examples.
• Alkanes are less reactive than alkenes; justify.
• Staring from ethyne, how will you prepare Acetaldehyde.
• How aldehyde reacts with Ammonia derivative? Give its general mechanism.
• How iodoform is prepared from acetaldehyde and ethyl alcohol.
• Write four important uses of acetaldehyde.
• Define saponification number and Iodine number.
• What are oligosacchrides? Give an example.
• Write down the importance of proteins.

Q.4. Attempt any SIX short questions.

• How acylation of Benzene takes place? Give its mechanism.
• Write equation for reactions of C2H5OH with (a) PBr3 (b) PCI5
• What is Lucas test?
• How ether is prepared by Williamson's method?
• Why nitrogen is necessary for plants? Give names of two nitrogen fertilizers.
• Explain reactions taking place in first 24-hours during setting of cement.
• Give names of pulping processes in paper industry. Which process is adopted in Pakistan?
• What do you mean by aeration during purification of water?
• How detergents are responsible to pollute water?

SECTION II:
Attempt any THREE questions. 

Q.5
(a) What are the improvements made in the Mendeleev's periodic table?
(b) Write a short note on the role of Gypsum in agriculture.
Q.6
(a) Define four types of isomerization with one example each.
(b) Write reactions of Grignard reagent with (i) CO2 (ii) HCHO
Q.7
(a) Give any two methods of preparation of alkene (ethene) and also mention two test to establish double bond in alkene.
(b) What do you understand by essential and non-essential amino acids? Write down one typical tests of amino acids.
Q.8
(a) Describe Industrial preparation of ethanol. How will you distinguish between ethanol and methanol.
(b) Expalin structure of benzene on the basis of atomic orbital treatment.
Q.9
(a) Give two methods for the preparation of Potassium chromate and Potassium dichromate in each case.
(b) Write a note on recycling of waste.

SECTION-III:
Attempt any THREE questions.

Q.10
(a) (i) Write down any to confirmatory tests for Nitrate radical.
(ii) How sulhite and thiosulphate can be differentiated?
(b) (i) Give Any to confirmatory tests for Al3+
(ii) How Charcoal cavity test is performed.
(c) (i) Write down any two confirmatory tests for Mg2+ radicall.
(ii) How Ba2+ is indicated?
(d) Write down material required, chemical equation and procedure for the preparation of Aspirin.
(e) How will you identify phenolic group in an organic compound? Give its two confirmatory tests.