CHEMISTRY
OBJECTIVE PAST PAPER BISE SARGODHA BOARD 2019 GROUP II
|
Chemistry
|
Sargodha
Board 2019
|
Group II
|
|
Maximum Marks: 17
|
Objective
Type
|
Time Allowed: 20 Minute
|
(1) Which of these polymers is an
addition polymer?
(A) Nylon-6,6 (B) Polystyrene (C)
Terylene (D) Epoxy resin
(2) The reaction between fat and
NaOH is called:
(A) Esterification (B) Hydrogen lysis (C) Fermentation (D)
Saponification
(3) Which three elements are needed
for the healthy growth of plants?
(A) N,S,P (B) N, Ca, P (C)
N, P, K (D) N, K, C
(4) Newspaper can be recycled again
and again by how many times?
(A) 5 (B) 4 (C)
3 (D) 2
(5) Mark the correct statement.
(A) Na is smaller than Na atom (B) Na+ is larger than Na
atom
(C) Cl (ion) is smaller (D) Cl
(ion) and Cl atom are equal in size
(6) Which ion will have the maximum
value of heat of hydration?
(A) Na (B) Cs2+ (C) Ba2+ (D) Mg2+
(7) Tincal is a mineral of
(A) Al (B) B (C)
Si (D) C
(8) Laughing gas is chemically:
(A) NO (B) N2O (C) NO2 (D) N2O4
(9) Which is the strongest acid?
(A) HClo (B) HClo2 (C) HClo3 (D) HClo4
(10) The total number of transition
elements is
(A) 10 (B) 14 (C)
40 (D) 58
(11) Ethers show the phenomenon of
(A) Position isomerism (B) Cis-trans isomerism (C) Metamerism (D) Functional group isomerism
(12) Formula of Chloroform is
(A) CH3Cl (B) CCl4 (C) CH2Cl2 (D) CHCl3
(13) Which compound is the most
reactive one?
(A) Benzene (B) Ethene (C)
Ethane (D) Ethyne
(14) Grignard’s reagent is reactive
due to:
(A) The presence of halogen atom (B) The presence
of Mg atom
(C) The polarity of C-Mg bond (D) The
polarity of Mg-X bond
(15) According to Lewis concept
ethers behave as
(A) Acid (B) Base (C)
Acid as well as base (D) Neutral
(16) Cannizzaro’s reaction is not
given by
(A) Formaldehyde (B) Acetaldehyde (C) Benzaldehyde (D)
Trimethyl
(17) The solution of which acid is
used for the seasoning of food?
(A) Formic acid (B) Acetic acid (C) Benzoic acid (D) Butanoic acid
CHEMISTRY SUBJECTIVE PAST PAPER BISE SARGODHA BOARD 2019 GROUP II
|
Chemistry
|
Sargodha
Board 2019
|
Group II
|
|
Maximum Marks: 68
|
Objective Type
|
Time Allowed: 2:40 Hours
|
Q.2 Write
short answers to any Eight (8) questions: (16)
(i) Why alkali metals give ionic
hydrides?
(ii) Write down similarities of
hydrogen with group IV A elements.
(iii) Give justification for the use
of potassium superoxide to breathing equipment’s of space crafts.
(iv) Write down the chemical formula
of minerals (a) Kaolin (b) Cryolite
(v) Write down the effect of heat on
Boric acid.
(vi) How kaolin differes from
ordinary clay?
(vii) Write two methods of
preparation of NO2.
(viii) How nitrous acid reacts with
CO(NH2)2 and C6H5NH2?
(ix) How orthophosphoric Acid is
prepared on large scale?
(x) Write down the names of two
enzymes used in the diagnosis of diseases.
Q.3 Write
short answers to any Eight (8) questions: (16)
(i) What is vital force theory, why
it was rejected?
(ii) Write structural formulas for
the following compounds:
(a)
But-I-ene-3-yne (b) divinely acetylene
(iii) What is Raney Nickel. How it
is prepared.
(iv) Write down the formulas of the
followings:
(a)
Anthracene (b)
Phenanthrene
(v) How will you prepare 2,4,6-
Trinitroluene from benzene in two steps.
(vi) What are primary and tertiary
alkyl halides? Give one example each.
(vii) Write reaction of ethyl
magnesium chloride with methanol.
(viii) Write structural formulas of
the following compounds.
(a)
Carbolic acid (b)
Glycerol
(ix) How ether is prepared by
Williamson synthesis.
(x) Write structural formulas of the
following compounds.
(a)
Oxalic acid (b)
Malonic acid
(xi) Write any four uses of Acetic
acid.
(xii) What are amino acids, give
their general formula.
Q.4 Write
short answers to any SIX (6) questions: (12)
(i) Write any two applications of a
noble gas Argon.
(ii) Justify that HF is a weaker
acid than HCl.
(iii) What Teflon. Give its any two
uses.
(iv) Why transition elements exhibit
variable valency.
(v) Complete the following reactions
(a) Formaldehyde + NaHSO3 (b) Acetone + NaHSO3
(vi) Write industrial method for the
preparation of formaldehyde.
(vii) Write any two points of
different between DNA and RNA.
(viii) What is Glycogen?
(ix) Write down difference between
polypeptide and protein.
BISE Sargodha Chemistry Paper, SECTION-II
Note: Attempt any Three questions.
Q.5 (a) What are the improvements made in the
Mendeleev’s periodic table?
(b) What is the function of calcium in plant
growth?
Q.6 (a) State the different rules for naming the
co-ordination complexes according to IUPAC system.
(b) What is acid rain? How does it affect
our environment?
Q.7 (a)
Discuss cis-trans isomerism, giving
two examples.
(b) Describe the stability of benzene on the
basic of heat of hydrogenation.
Q.8 (a) Write down the reaction with mechanism
for the preparation of alkene by Kolbe’s Electrolytic method.
(b) How methanol is prepared on industrial
scale? Why is it called wood spirit?
Q.9 (a)
Describe SN2 mechanism
in detail.
(b) What is aldol condensation? Discuss its
mechanism.
No comments:
Post a Comment