Friday , 21 October 2016

Guess Papers for FSC Pre Engineering Part 2 2016

Guess Papers for FSC Pre Engineering Part 2 2016

Chemistry MCQs Guess Paper FSC 12th Class 2016
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Chemistry MCQs Guess Paper FSC 12th Class 2016

Note: (Chemistry MCQs Guess Paper FSC 12th Class 2016) All published material contains an informatory data which is only gathered for educational purpose. These guesses are prepared after detailed analysis of past five years exams. Our entire team and/or publishers are not responsible in case of variation in assumed results and outcomes. However the purposes of attempted efforts are to provide accurate and effective knowledge to the readers, in any case our entire team and/or publishers will not be responsible for the accuracy or misusage of all published material.

Guess Paper of Chemistry FSC Part 2 Important MCQs Questions

Synthetic rubber is made by polymerization of
(A) Chloroform
(B) Acetylene
(C) Divinyl acetylene
(D) Chloroprene

In the purification of potable water the coagulant used is
(A) Nickel sulphate
(B) Copper sulphate
(C) Barium sulphate
(D) Alum

Which of the following will have highest boiling point
(A) Methanol
(B) Ethanal
(C) Propanal
(D) Hexanone

Which of following sulphates is not soluble in water
(A) Sodium sulphate
(B) Potassium sulphate
(C) Zinc sulphate
(D) Barium sulphate

For which mechanism, the first step involved is the same?
(A) El and E2
(B) E2 and SN2
(C) SN and E2
(D) El and SN

Which element among the following belongs to Group A of the periodic table?
(A) Barium
(B) Iodine
(C) Lead
(D) Oxygen

Period V in modern periodic table contains how many elements
(A) 32
(B) 18
(C) 10
(D) 8

Which woody raw material is used for the manufacture of paper pulp?
(A) Cotton
(B) Bagasse
(C) Poplar
(D) Rice straw

Which one of the following enzymes brings about the hydrolysis of fats?
(A) Urzase
(B) Maltase
(C) Zymase
(D) Lipase

When sugar is treated with Conc. H2SO4 it becomes black due to
(A) Decolourization
(B) Dehydration
(C) Hydrolysis
(D) Hydration

Acetamide is prepared by
(A) Heating ammonium acetate
(B) Heating methyl cyanide
(C) Heating ethyl acetate
(D) The hydrolysis of methyl cyanide

The anhydride of HC1O4 is
(A) C103
(B) C102
(C) C1205
(D) C1207

Which compound will have the maximum repulsion with water?
(A) C6H6
(B) C2H5OH
(C) CH3-CH2-CH2-OH2
(D) CH3-O-CH3

Which one is true about melting points of halogens?
(A) Decrease down the group
(B) Increase down the group
(C) Remain same in group
(D) First increase then decrease down the group

Which halogen will react spontaneously with Au (s) to produce Au3+?
(A) Br2
(B) F2
(C) 12
(D) CC2

Amongst the following, the compound that can be most readily sulphonated is
(A) Toluene
(B) Benzene
(C) Nitrobenzene
(D) Chlorobenzene

Which is most difficult to oxidize?

Which compound is prepared by Stadeler’s process?
(A) K2Cr207
(B) KMnO4
(C) K2CrO4
(D) K2MnO4

The type of hybridization of carbon atom in methane is
(A) Svil
(B) Sp2
(C) Spa
(D) None

Keeping in view the size of atoms, which order is the correct one?
(A) Mg > Sr
(B) Ba > Mg
(C) Lr > Ce
(D) C Q > I

The state of hybridization of carbon atom in methane is
(A) Spa
(B) Sp2
(C) Sp
(D) Dsp2

Which is not an alkali metal?
(A) Francium
(B) Cacsium
(C) Rubidium
(D) Radium

Which metal is used in the thermite process because of its activity?
(A) Iron
(B) Copper
(C) Aluminium
(D) Zinc

Laughing gas-in chemically
(A) NO
(B) N20
(C) NO2
(D) N204

Which hydrogen halide is the weakest acid in solution?
(A) HF
(B) HBr
(C) HI
(D) Hee

The strength of binding energy of transition elements depends upon
(A) Number of electron pairs
(B) Number of unpaired electrons
(C) Number of neutrons
(D) Number of protons

Benzene cannot undergo
(A) Substitution reactions
(B) Addipon reactions
(C) Oxidation reactions
(D) Elimination reactions

The group that deactivates the benzene
(A) Amino
(B) Chlorine
(C) Methyl
(D) Hydroxy

During nitration of benzene, the active nitrating agent is
(A) NO3
(B) NO2
(C) NO2
(D) HNO3

When CO2 is made to react with ethyl magnesium iodide, followed by acid hydrolysis, the product formed is
(A) Propane
(B) Propanoic acid
(C) Propanal
(D) Propanol

Which compound shows hydrogen bonding?
(A) C21-16
(B) C2H5Ce
(C) CH3-0-CH3
(D) C2H5OH

Cannizzaro’s reaction is not given by
(A) Formaldehyde
(B) Acetaldehyde
(C) Benzaldehyde
(D) Trimethyl acetaldehyde

Which reagent will react with both aldehydes and ketones?
(A) Grignard’s reagent
(B) Tollen’s reagent
(C) Fehling’s reagent
(D) Benedict’s reagent

Aromatic hydrocarbons are the derivatives of
(A) Normal series of paraffins
(B) Alkene
(C) Benzene
(D) Cyclohexane

The main pollutant of leather tanneries in the waste water is due to the salt of
(A) Lead
(B) Chromium
(C) Copper
(D) Chromium

One of the following gas is not a pollutant. What is that?
(A) SO2
(B) CO
(C) NO2
(D) CO2

Which is not an alkali metal?
(A) Francium
(B) Caesium
(C) Rubidium
(D) Radium

Which is the least reactive of all the alkali metals
(A) Li
(B) Na
(C) K
(D) Cs

Which one does not belong to the alkaline earth metals?
(A) Be
(B) Ba
(C) Ra
(D) Rn

Which of the following element has lowest ionization energy
(A) Beryllium
(B) Boron
(C) Carbon
(D) Oxygen

Which element has lowest melting point
(A) Beryllium
(B) Magnesium
(C) Calcium
(D) Barium

Kaolin is a mineral of
(A) Carbon
(B) Magnesium
(C) Silicon
(D) Aluminium

Which of the following is a reddish brown gas
(A) N20
(B) NO
(C) N205
(D) NO2

Which of the following statement is correct
(A) Bond energy of F2 is less than C C2
(B) Bond energy of F2 is less than 12
(C) Bond energy of C C2 is less than F2
(D) Bond energy of C C2 is less than Br2

Choose the correct statement
(A) Na+ is smaller than Na atom
(B) Na+ is larger than Na atom
(C) CU is smaller than Cf atom
(D) cr. (ion) and Cf (atom) are equal in size

Mark the correct statement
(A) CC is smaller than CC atom
(B) CC- (ion) and CC (atom) are equal in size
(C) Na- is smaller than Na atom
(D) Na is larger than Na atom

The process used to improve quality of gasoline is called
(A) Thermal cracking
(B) Reforming
(C) Steam cracking
(D) Combustion

The catalytic oxidation of methane produces
(A) CO + H2O
(B) CO2 + H2O
(C) C + H2O
(D) H3C—OH

Toluene HNo+H “SO >
(A) Orthonitrotoluene
(B) m – nitrotoluene
(C) p-nitrotoluene
(D) 2,4,6-TNT

Decarboxylation of salicylic acid with soda lime yields
(A) Toluene
(B) Cresol
(C) Xylene
(D) Phenol

The reactivity of Grignard’s reager. is due to
(A) Polarity of Mg-X bond
(B) Polarity of C-Mg bond.
(C) Electronegativity of halogen atom
(D) Presence of Mg atom

Grignard 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) Presence of Alkyl group

Which of the following reacts with Grignard’s reagent to give primary alcohols
(A) Epoxide
(B) Peroxide
(C) Super oxide
(D) Hydrogen oxide

Alcohol obtained by fermentation is only upto
(A) 10%
(B) 12%
(C) 20%
(D) 95%

Which compound is formed, when CH3OH reacts with CH3MgBr?
(A) Ethane
(B) Methane
(C) Alcohol
(D) Acetone

Organic compounds having fruity smell are
(A) Carboxylic acids
(B) Alcohol’s
(C) Ethers
(D) Ester

Rectified spirit is
(A) 80% alcohol
(B) 95% alcohol
(C) 85% alcohol
(D) 98% alcohol

Which reagent is used to produce a carboxylic group to an alcohol
(A) H2/Ni
(B) H2/Pt
(C) H2/Pd
(D) LiA/H4

Select the following one which is alcohol
(B) CH3CH3
(D) CH3-Cf

Select from the following the one which is alcohol
(B) CH30C1-13
(D) CH3CH2Br

In t-butyl alcohol, the tertiary carbon is, bonded to
(A) Three hydrogen atoms
(B) Two hydrogen atoms
(C) One hydrogen atom
(D) No hydrogen atom

Methyl alcohol is not used
(A) As a solvent
(B) As an antifreezing agent
(C) As a substitute for petrol
(D) For denaturing of ethyl alcohol

According to Lewis concept, ethers behave as
(A) Acid
(B) Base
(C) Solvent
(D) Nucleophile

Which of the following is an addition polymer
(A) Polyester
(B) Polystyrene
(C) Nylon 6, 6
(D) Terylene

Starch is a polymer of
() Fructose
() A-D-glucose
() Sucrose
() Lactose

Which is not a calcarious material
(A) Clay
(B) Limestone
(C) Marble
(D) Chalk

The pH of unpolluted rain water should be
(A) 5.00
(B) 5.60
(C) 6.50
(D) 7.00

Elements of group IA are called
(A) Alkali metals
(B) Metalloids
(C) Alkaline earth metals
(D) Coinage metals

Chile saltpetre has the chemical formula
(A) NaNO3
(B) KNO3
(C) Na2B4O7
(D) Na2CO3 H2O

Tincal is a mineral of
(A) AC
(B) B
(C) Si
(D) C

Which is the strongest acid
(B) HC CO2
(C) HC CO3
(D) HC CO4

The colour of transition metal complexes is due to
(A) d-d transitions of electrons
(B) Par 3nagnetic nature of transition elements
(C) Ionization
(D) Loss of s-electrons

Group VI-B of transition elements contains
(A) Zn/Cd/Hg
(B) Mn/Te/Re
(C) Cr/Mo/W
(D) Fe/Ru/Os

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

Vital force theory was rejected by
(A) G.N.Lewis
(B) FriedrickWohler
(C) Scientist of 20th Century
(D) Greek Philosophers

Acetic acid is manufactured by
(A) Distillation
(B) Fermentation
(C) Ozonolysis
(D) Esterification

Which derivative cannot be prepared directly from acetic acid?
(A) Acetamide
(B) Acetyl chloride
(C) Acetyl anhydride
(D) Ethyl acetate

The reaction between fat and NaOH is called
(A) Esterification
(B) Hydrogenolysis
(C) Fermentation
(D) Saponification

SN2 reactions are
(A) Uni-molecular
(B) Stbi-molecular
(C) Tri-molecular
(D) Tetra-molecular

Elimination bimolecular reaction involves
(A) First order kinetics
(B) Second order kinetics
(C) Third order kinetics
(D) Zero order kinetics

The number of zones through which the charge passes in a rotary kiln is
(A) 4
(B) 3
(C) 2
(D) 5

Ecosystem is a smaller unit of
(A) Biosphere
(B) Lithosphere
(C) Atmosphere
(D) Hydrosphere

The brown gas formed, when metal reduces HNO3 to
(A) NO
(B) NO2
(C) N203
(D) N205

The oxides of beryllium are
(A) Acidic
(B) Basic
(C) Amphoteric
(D) None of these

Smaller the size of an ion
(A) Lesser is the degree of hydration
(B) Lesser is the polarizing power
(C) Greater is the electron affinity
(D) Greater is the degree of hydration

The newspaper can be recycled again and again as many times as
(A) 5
(B) 3
(C) 4
(D) 2

Phosphorus helps the growth of
(A) Roots
(B) Leaves
(C) Stem
(D) Seed

The fibre which is made from acrylonitrile as monomer is
(A) Acrylic fibre
(B) Polyester fibre
(D) Rayon fibre

The solution of which acid is used for seasoning of food?
(A) Benzoic acid
(B) Butanoic acid
(C) Formic acid
(D) Acetic acid

Which one of the following gases is used for artificial ripening of fruits
(A) Methane
(B) Ethene
(C) Ethane
(D) Propane

Which gas is used for artificial ripening of fruits?
(A) Ethene
(B) Methane
(C) Ethyne
(D) Propane

The chief ore of aluminium is
(A) Na3AtF6
(B) At203.2H20
(C) At203
(D) At203.H20

Which is not a calcareous material
(A) Lime
(B) Clay
(C) Marble
(D) Marine shell

Which is the strongest acid
(A) HCtO
(B) HCt02
(C) HCe03
(D) HCt04

Which enzyme is not involved in fermentation of starch
(A) Diastase
(B) Zymase
(C) Urease
(D) Invertase

Which compound is the most reactive one
(A) Benzene
(B) Ethene
(C) Ethane
(D) Ethyne

Which one of the following is not hetrocyclic compound
(A) Thiphene
(B) Anthracene
(C) Furan
(D) Pyrsole

Which compound is used as decolorizing agent
(A) Animal charcoal
(B) Concentrated H2SO4
(C) CaC12
(D) Silica gel

The compound formed in borax bead test is
(A) Boron oxide
(B) Metal boride
(C) Metallic boron
(D) Metal metaborates

Which compound is more soluble in water?
(A) C2H5OH
(B) C6H5OH
(D) n-Hexanol

Acetone reacts with HCN to form a cyanohydrin. It is an example of
(A) Electrophilic addition
(B) Electrophilic substitution
(C) Nucleophilic addition
(D) Nucleophilic substitution

Coordination number of Pt in [Pt CC (NO2)(NH3)4] is
(A) 2
(B) 4
(C) 1
(D) 6

Luminium oxide is
(A) Acidic oxide
(B) Basic oxide
(C) Amphoteric oxide
(D) None of these

Which one is perchloric acid
(A) HCtO
(B) HCfO3
(C) HCfO2
(D) HCfO4

Which of the following is a non-typical transition element
(A) Cr
(B) Mn
(C) Zn
(D) Iron

Which of the following will react with Toilen’s reagent
(A) CH3-C-H

Which one is neutral amino acid
(A) Lysine
(B) Histidine
(C) Valine
(D) Glutamic acid

The word paper is derived from the name of which reedy plant
(A) Rose
(B) Sun flower
(C) Water hyacinth
(D) Papyrus

A single chloride free radical can destroy how many ozone molecules?
(A) 100
(B) 100000
(C) 10000
(D) 10

Which element is not present in all proteins?
(A) Carbon
(B) Hydrogen
(C) Nitrogen
(D) Sulphur

The electrophile in aromatic sulphonation is
(A) H2SO4
(B) HS041
(C) SO3
(D) S031+

A mixture of an aldehyde and carboxylic acid can be separated by
(A) Na2SO4
(B) H2SO4
(C) NaHCO3
(D) NaHS03

The word paper is derived from the name of which ready plant
(A) Rose
(B) Sunflower
(C) Papyrus
(D) Water hyacinth

Which geometry would you expect for four equipment sp3 orbitals
(A) Pyramidal
(B) Square planar
(C) Trigonal
(D) Tetrahedral

Oxidation of NO in air produces
(A) N20
(B) N203
(C) N204
(D) N205

A double bond consists of
(A) Two sigma bonds
(B) One sigma and one pi bond
(C) One sigma and two pi bonds
(D) Two pi bonds

Disaffection of water by chlorine is done by the production of
(A) NH4C1
(B) NC13
(C) HOC1
(D) NHC12

Macronutrient for soil is
(A) N2
(B) Cu
(C) Zn
(D) Fe

The octane number is 100 for
(A) Neo-octane
(B) N-hexane
(C) Neo-pentane
(D) Iso-octane

The %age of nitrogen in ammonium nitrate is
(A) 46%
(B) 82%
(C) 33%
(D) 16%

Which one of the following is not a fatty acid
(A) Propanoic acid
(B) Acetic acid
(C) Pthalic acid
(D) Butanoic acid

Point out the arc of potassium
(A) Dolomite
(B) Cry lite
(C) Bounite
(D) Carriallite

Peroxy acetyle nitrate (PAN) is an irritant to human beings and it effects
(A) Eyes
(B) Ears
(C) Stomach
(D) Nose

Number of moles of CO2 which contains 8g of oxygen is
(A) 0.25
(B) 0.50
(C) 1.0
(D) 1.5

Octate rule is not followed in the formation of
(A) NF3
(B) CP4
(C) C1C4
(D) PC15

How many allotropic forms are present in carbon
(A) 2
(B) 3
(C) 4
(D) 5

How many semi-metals are present in first period
(A) 0
(B) 3
(C) 2
(D) 6

Expoxy resins are fundamentally
(A) Polyamide
(B) Polyethers
(C) Polyvinyl
(D) Polyesters

Atmosphere contains carbon dioxide
(A) 0.01%
(B) 0.02%
(C) 0.03%
(D) 0.04%

Dolomite is an arc of
(A) Strontium
(B) Magnesium
(C) Barium
(D) Potassium

Fungicides are the pesticides which
(A) Control the growth of fungus
(B) kill insects
(C) kill plants
(D) kill herbs

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