Tuesday, October 19, 2021
10:51 PM (GMT +5)

Go Back   CSS Forums > CSS Optional subjects > Group II > Chemistry

Reply Share Thread: Submit Thread to Facebook Facebook     Submit Thread to Twitter Twitter     Submit Thread to Google+ Google+    
 
LinkBack Thread Tools Search this Thread
  #1  
Old Monday, October 10, 2011
Rashadbunery's Avatar
Junior Member
 
Join Date: Jul 2011
Location: Village koz chanar,teh and p.o daggar ,buner,kpk
Posts: 16
Thanks: 32
Thanked 1 Time in 1 Post
Rashadbunery is on a distinguished road
Thumbs down chemistry MCQS

AOA , dear brothers if any one have chemistry MCQS plz share ,all the chemistry aspirants would take advantage and will give a lot of prayers for ur success ,
regards
__________________
TRUST IN GOD AND DO THE RIGHT
Reply With Quote
  #2  
Old Monday, October 10, 2011
sumyra's Avatar
40th CTP (OMG)
CSP Medal: Awarded to those Members of the forum who are serving CSP Officers - Issue reason: CE 2011 - Merit 174
 
Join Date: Sep 2010
Location: punjab
Posts: 124
Thanks: 118
Thanked 139 Times in 60 Posts
sumyra will become famous soon enoughsumyra will become famous soon enough
Default

MCQs of chemistry paper 1 2010

Q.1. Select the best option/answer and fill in the appropriate box on the Answer Sheet (20)

(i) When an electron is brought from infinite distance close to the nucleus of the atom, the energy of Electron-nucleus system?
(a) increases to a smaller negative value
(b) decreases to a greater negative value
(c) decreases to a smaller positive value
(d) increases to a greater positive value

(ii) The probability of finding the electron in the nucleus is:
(a) 100% due to forces of attraction
(b) finite for all orbitals
(c) Zero for all orbitals
(d) Zero for some orbitals and finite for others

(iii) When Zn metal is kept in CuSO4 solution, copper is precipitated and ZnSO4 is formed because:
(a) Atomic number of Zinc is smaller than copper
(b) Atomic number of Zinc is larger than copper
(c) Standard reduction potential of Zinc is more than that of copper
(d) Standard reduction potential of Zinc is less than that of copper

(iv) Electrolytes when dissolved in water, dissociate into their constituent ions, the degree of dissociation of an electrolyte increases with the:
(a) Presence of a substance yielding common ion
(b) Decreasing temperature
(c) Decreasing concentration of electrolyte
(d) Increasing concentration of electrolyte

(v) There is a large positive entropy change for an exothermic reaction. It means that the reaction will be:
(a) possible at high temperatures only
(b) impossible at all temperatures
(c) possible at low temperatures only
(d) possible at all temperatures

(vi) Which of the following statement is false?
(a) the temperature of the system will fall if an exothermic reaction is isolated from its surroundings
(b) Energy is absorbed when one compound is converted into another with higher heat content
(c) the temperature of the system is likely to fall if heat is absorbed during the course of a reaction
(d) None of these

(vii) The H_____ bond is strongest in:
(a) S__H ……O
(b) O_H …….S
(c) F_H ……..O
(d) F_H ……..S

(viii) Heavy water contains:
(a) Large amount of salts
(b) Deuterium
(c) O18
(d) O16

(ix) pH + pOH of a solution is:
(a) 7
(b) Zero
(c) 14
(d) -14

(x) The compound that is not Lewis acid:
(a) BF3
(b) BaCl2
(c) SnCl4
(d) AlCl3

(xi) Strongest acid having Ka:
(a) 104
(b) 10-4
(c) 1
(d) 10-2

(xii) Ore of Aluminium:
(a) Calamine
(b) Dolomite
(c) Bauxite
(d) Limestone

(xiii) Oxidation number of S in sulphuric acid:
(a) Four
(b) Six
(c) Two
(d) Eight

(xiv) d-block elements form coordination compounds because of:
(a) Small Cationic size
(b) Large ionic Charge
(c) Unfilled d-orbitals
(d) Filled d-orbitals

(xv) Brass is an alloy of:
(a) Cu and Zn
(b) Cu, Ni, Zn
(c) Cu and Ni
(d) Cu, Al, Zn

(xvi) Urea is a high quality nitrogenous fertilizer with:
(a) 76% nitrogen
(b) 46% nitrogen
(c) 66% nitrogen
(d) 26% nitrogen

(xvii) Diamond is:
(a) Good conductor of electricity
(b) Bad conductor of electricity
(c) Bad conductor on heating
(d) Good conductor on heating

(xviii) Carbon monoxide is poisonous gas because it:
(a) replaces oxygen from lungs
(b) forms carboxy haemoglobin
(c) Forms carbon dioxide with oxygen
(d) has a sweet smell

(xix) Rust is:
(a) FeO + Fe(OH)2
(b) Fe2O3 + Fe(OH)2
(c) Fe2O3
(d) Fe2O3 + Fe(OH)3

(xx) Calcium Carbide reacts with water to give:
(a) Methane
(b) Ethylene
(c) Acetylene
(d) Ethane

corrections are welcome..
__________________
“The greatest barrier to success is the fear of failure.”
Reply With Quote
The Following 2 Users Say Thank You to sumyra For This Useful Post:
Naqash Fatima (Saturday, January 28, 2012), Rashadbunery (Tuesday, October 11, 2011)
  #3  
Old Monday, October 10, 2011
sumyra's Avatar
40th CTP (OMG)
CSP Medal: Awarded to those Members of the forum who are serving CSP Officers - Issue reason: CE 2011 - Merit 174
 
Join Date: Sep 2010
Location: punjab
Posts: 124
Thanks: 118
Thanked 139 Times in 60 Posts
sumyra will become famous soon enoughsumyra will become famous soon enough
Default

MCQs of chemistry paper 2 2010


Q.1. Select the best option/answer and fill in the appropriate box on the Answer Sheet. (20)

(i) Which of the following substituent deactivates benzene ring and is o, p-directing?
(a) __ NH2
(b) __ Cl
(c) __ OCH3
(d) __ OH

(ii) Which of the following is most readily nitrated?
(a) Toluene
(b) Benzaldehyde
(c) Nitrobenzene
(d) Benzoic Acid

(iii) Ketones can be prepared by reaction of Grignard reagent with:
(a) Acid Amides
(b) Acid Chloride
(c ) Carboxylic Acid
(d) Epoxides

(iv) Which of the following statements about the order of reaction is true?
(a) The order of a reaction can only be determined by experiment.
(b) A second order reaction is also bimolecular
(c) The order of reaction must be a positive integer
(d) The order of reaction increases with increasing temperature.

(v) Polysaccharides yield many monosaccharides on:
(a) Hydration
(b) Oxidation
(c) Reduction
(d) Hydrolysis

(vi) Which of the following is not aromatic?
(a) Benzene
(b) cyclooctatetraene
(c) Pyridine
(d) Phenol

(vii) Which of the following is most basic?
(a) H2O
(b) NH3
(c) CH3 NH2
(d) CH3OH

(viii) Which of the following has lowest pH?
(a) CH3COOH
(b) CF3COOH
(c) ClCH2COOH
(d) Cl3C COOH

(ix) The equilibrium of two readily interconvertible isomers is called:
(a) Stereoisomerism
(b) Metamerism
(c) Tautomerism
(d) Polymorphism

(x) Which of the following compounds exhibit geometrical isomerism?
(a) 1-Pentene
(b) 2-Pentene
(c) 2-methyl –2-Pentene
(d) 2-methyl –2-Butene

(xi) Which of the following gives a tertiary alcohol when treated with Grignard reagent:
(a) HCHO
(b) CH3CHO
(c) C3H5CHO
(d) CH3COCH3

(xii) Which of the following tests is not used to identify aldehydes?
(a) Tollen’s test
(b) Benedict solution test
(c) Fehling solution test
(d) Ammonia test

(xiii) Which is incorrect about alkaloids?
(a) Naturally Occuring
(b) Possess a hetrocyclic ring
(c) Exhibit biological action
(d) acidic in nature

(xiv) Which of the followings will not give iodoform test:
(a) Acetone
(b) Ethylacohol
(c) Benzaldehyde
(d) Acetaldehyde

(xv) The reaction of aniline with bromine water gives:
(a) o-bromoaniline
(b) p-bromoaniline
(c) 2,4-dibromoaniline
(d) 2,4,6-tribromoaniline

(xvi) The reaction of tripalmitin, with sodium hydroxide is called:
(a) Hydrolysis
(b) Saponification
(c) Esterification
(d) Combustion

(xvii) Which one is not Petrochemical?
(a) Napthalene
(b) Mineral Oil
(c) Wax
(d) Table Salt

(xviii) Chemical adsorption:
(a) is exothermic
(b) is irreversible
(c) takes place at high temp.
(d) All of these

(xix) The most commonly used absorbent for chromatographic separation of organic compound is:
(a) Activated charcoal
(b) Fuller’s Earth
(c) Alumina
(d) Silica gel

(xx) Grignard reagent is:
(a) Organo Zinc halide
(b) Organo cadmium bromide
(c) n-Butyl Lithium
(d) Organo Magnesium halide

corrections are required
__________________
“The greatest barrier to success is the fear of failure.”
Reply With Quote
The Following 5 Users Say Thank You to sumyra For This Useful Post:
Ayesha Chemist (Sunday, March 24, 2013), Hadi Bakhsh (Thursday, June 12, 2014), Naqash Fatima (Saturday, January 28, 2012), Patras Arain (Wednesday, October 26, 2011), Rashadbunery (Tuesday, October 11, 2011)
  #4  
Old Friday, October 21, 2011
Junior Member
 
Join Date: May 2011
Location: Gujranwala
Posts: 27
Thanks: 0
Thanked 9 Times in 6 Posts
naila cheema is on a distinguished road
Default

thanks for sharing Mcqs. plz do post the solved mcqs of any of the last chemistry papers u have. seniors plz share the name of any good book having solved chemistry papers.
Reply With Quote
  #5  
Old Friday, October 21, 2011
sumyra's Avatar
40th CTP (OMG)
CSP Medal: Awarded to those Members of the forum who are serving CSP Officers - Issue reason: CE 2011 - Merit 174
 
Join Date: Sep 2010
Location: punjab
Posts: 124
Thanks: 118
Thanked 139 Times in 60 Posts
sumyra will become famous soon enoughsumyra will become famous soon enough
Default

Quote:
Originally Posted by naila cheema View Post
thanks for sharing Mcqs. plz do post the solved mcqs of any of the last chemistry papers u have. seniors plz share the name of any good book having solved chemistry papers.
dear i solved chemistry past papers of css myself and i think so there is no book for solved papers ....i will post other solved mcqs as well in the time being...and i request other members having chemistry as optional to contribute
__________________
“The greatest barrier to success is the fear of failure.”
Reply With Quote
The Following 3 Users Say Thank You to sumyra For This Useful Post:
Asif Ayub (Tuesday, September 24, 2013), Ayesha Chemist (Sunday, March 24, 2013), Chintoo2010 (Wednesday, December 14, 2011)
  #6  
Old Saturday, January 28, 2012
Junior Member
 
Join Date: Jan 2012
Location: Mardan city
Posts: 3
Thanks: 2
Thanked 0 Times in 0 Posts
Scholar is on a distinguished road
Default

(x) Which of the following compounds exhibit geometrical isomerism?
(a) 1-Pentene
(b) 2-Pentene
(c) 2-methyl –2-Pentene
(d) 2-methyl –2-Butene

(v) There is a large positive entropy change for an exothermic reaction. It means that the reaction will be:
(a) possible at high temperatures only
(b) impossible at all temperatures
(c) possible at low temperatures only
(d) possible at all temperatures

(vi) Which of the following statement is false?
(a) the temperature of the system will fall if an exothermic reaction is isolated from its surroundings
(b) Energy is absorbed when one compound is converted into another with higher heat content
(c) the temperature of the system is likely to fall if heat is absorbed during the course of a reaction
(d) None of these

(xvii) Which one is not Petrochemical?
(a) Napthalene
(b) Mineral Oil
(c) Wax
(d) Table Salt

Last edited by Shooting Star; Sunday, April 08, 2012 at 05:08 PM. Reason: merged
Reply With Quote
  #7  
Old Saturday, January 28, 2012
Junior Member
 
Join Date: Jan 2012
Location: Mardan city
Posts: 3
Thanks: 2
Thanked 0 Times in 0 Posts
Scholar is on a distinguished road
Default

Dear, i am not doing the exam but still wana help you and other members in Bio and chem.
so you can share your questions, i will try to find out the most appropriate answer.
Reply With Quote
  #8  
Old Tuesday, August 25, 2020
Abdul Mueez's Avatar
Junior Member
 
Join Date: May 2017
Posts: 1
Thanks: 0
Thanked 0 Times in 0 Posts
Abdul Mueez is on a distinguished road
Default

Quote:
Originally Posted by Scholar View Post
(x) Which of the following compounds exhibit geometrical isomerism?
(a) 1-Pentene
(b) 2-Pentene
(c) 2-methyl –2-Pentene
(d) 2-methyl –2-Butene

(v) There is a large positive entropy change for an exothermic reaction. It means that the reaction will be:
(a) possible at high temperatures only
(b) impossible at all temperatures
(c) possible at low temperatures only
(d) possible at all temperatures

(vi) Which of the following statement is false?
(a) the temperature of the system will fall if an exothermic reaction is isolated from its surroundings
(b) Energy is absorbed when one compound is converted into another with higher heat content
(c) the temperature of the system is likely to fall if heat is absorbed during the course of a reaction
(d) None of these

(xvii) Which one is not Petrochemical?
(a) Napthalene
(b) Mineral Oil
(c) Wax
(d) Table Salt
Thanks

Sent from my ONEPLUS A3000 using Tapatalk
Reply With Quote
Reply

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
which portion can be left miss shiss Chemistry 9 Wednesday, October 26, 2011 11:17 AM
PMS Syllabus Last Island PCS / PMS Syllabus 35 Friday, April 22, 2011 05:51 PM


CSS Forum on Facebook Follow CSS Forum on Twitter

Disclaimer: All messages made available as part of this discussion group (including any bulletin boards and chat rooms) and any opinions, advice, statements or other information contained in any messages posted or transmitted by any third party are the responsibility of the author of that message and not of CSSForum.com.pk (unless CSSForum.com.pk is specifically identified as the author of the message). The fact that a particular message is posted on or transmitted using this web site does not mean that CSSForum has endorsed that message in any way or verified the accuracy, completeness or usefulness of any message. We encourage visitors to the forum to report any objectionable message in site feedback. This forum is not monitored 24/7.

Sponsors: ArgusVision   vBulletin, Copyright ©2000 - 2021, Jelsoft Enterprises Ltd.