Chemistry Mcqs – (Science) MCQs Latest For FPSC, PPSC, NTS, KPPSC, SPSC & Other Tests

Chemistry Mcqs – (Science) MCQs Latest For FPSC, PPSC, NTS, KPPSC, SPSC & Other Tests

Chemistry Mcqs - (Science) MCQs Latest For FPSC, PPSC, NTS, KPPSC, SPSC & Other Tests
Chemistry Mcqs

Chemistry Mcqs “. Tab this page to check “Latest Chemistry MCQs” for the preparation of competitive mcqs, FPSC mcqs, PPSC mcqs, SPSC mcqs, KPPSC mcqs, AJKPSC mcqs, BPSC mcqs, NTS mcqs, PTS mcqs, OTS mcqs, Atomic Energy mcqs, Pak Army mcqs, Pak Navy mcqs, CTS mcqs, ETEA mcqs and others. The most occurred mcqs of Chemistry in past papers. Past papers of Chemistry mcqs. Past papers of Chemistry MCQs. Chemistry Mcqs are the necessary part of any competitive / job related exams. The Chemistry mcqs having specific numbers in any written test. It is therefore everyone have to learn / remember the related Chemistry mcqs. The Important series of Chemistry Mcqs are given below:

Which of the following shows inert pair effect ?

A. carbon
B. boron
C. silicon
D. tin

Tincal is a mineral of___________________?

A. Si
B. A1
C. B
D. C

Which one of the following is not a semiconductor ?

A. Ge
B. Si
C. Se
D. Sn

The process of aluminium extraction is called__________________?

A. Hall process
B. Haber process
C. Thermite process
D. Contact process

Aqueous solution of borax above 62°C gives crystals of________________?

A. Na2B4O7.2H2O
B. Na2B4O7.5H2O
C. Na2B4O7.4H2O
D. Na2B4O7.10H2O

Which of the following is not a use of silicon ?

A. Hydraulic brakes
B. Lubricants
C. Antifreeze
D. Water repellent

CO2 is gas while SiO2 is solid at room temperature?

A. Silicon has all sigma bonds
B. CO2 is an independent molecule while SiO2 has network covalent structure
C. CO2 forms multiple bond while silicon does not form multiple bonds
D. carbon is non-metal while silicon is semi-metal

Identify the correct statement regarding CO_______________?

A. it is powerful oxidizing agent
B. it reacts with red blood cells of haemoglobin
C. it combines with H2O to form carbonic acid
D. it is used to prepare aerated drinks

Boric acid cannot be used__________________?

A. For washing eyes
B. As antiseptic in medicine
C. In soda bottles
D. For enamel and glazes

Which element can form tripositive ion ?

A. Carbon
B. Beryllium
C. Silicon
D. Aluminium

Which of the following is different with respect to physical appearance ?

A. Antimony
B. Phosphorus
C. Arsenic
D. Bismuth

Compounds of nitrogen and phosphorus are mostly________________?

A. polar
B. covalent
C. ionic
D. all varieties are possible

SO3 is not absorbed in water directly because__________________?

A. Reaction is exothermic
B. Dilute acid is produced
C. It is insoluble in water
D. All of above

Which of the following will give phosphoric acid one reaction with water_________________?

A. P2O3
B. PCI5
C. P2O5
D. All of the above

Phosphorus is a Greek word and it means_________________?

A. Light bearing
B. Impure
C. Fire
D. Tetrahedral

Allotropic form of phosphorus that is poisonous is___________________?

A. White
B. Black
C. Red
D. Violet

Acetic anhydride can be obtained by treating ethyl alcohol with___________________?

A. H2SO4
B. P2O5
C. Both A and B
D. PCI5

Phosphorous acid upon thermal decomposition yields phosphoric acid and____________________?

A. Phosphine
B. Water
C. Phosphorus
D. Phosphorus pentoxide

P2O5 is a hygroscopic powder which sublimes at______________?

A. 630°C
B. 360°C
C. 260°C
D. 620°C

Phosphoric acid is a weak acid and its basicity is____________________?

A. zero
B. 3
C. 1
D. 2

All the elements in group VIA are ___________________ in nature?

A. metals
B. hygroscopic
C. polymeric
D. all of above

Which allotropic form of phosphorous is the most stable ?

A. red
B. black
C. White
D. Violet

The chemical composition of cinnabar is__________________?

A. PbS
B. ZnS
C. HgS
D. FeS

Oxygen and sulphur resemble in all except________________?

A. Show allotropy
B. Electronic conviguration of valence shell electrons
C. Polymeric
D. Show same oxidation state

Arsenic oxides are removed by passing through_________________?

A. Ferric hydroxide
B. Calcium hydroxide
C. Sodium hydroxide
D. Aluminium hydroxide

Chemistry Mcqs

When sulphuric acid is treated with ethanol sulphuric acid behaves like________________?

A. an oxidizing agent
B. a dehydrating agent
C. an acid
D. as sulphonating agent

Which one of the followings possesses melting point below 0°C?

A. Nitrogen
B. Carbon
C. Phosphorus
D. Bismuth

The most electronegative element among the following is_________________?

A. As
B. N
C. Sb
D. P

Phosphene gas will be produced if phosphorous acid is subjected to___________________?

A. Reduction
B. Oxidation
C. Decomposition
D. Both b & c

Which one of following is not a property of pure quartz ?

A. Coloured solid
B. Hard
C. Brittle
D. All of above

Which of the following does not contain phosphorus ?

A. Bone
B. Yolk of egg
C. Nerves
D. Steel

Which one of the following is not the use of graphite ?

A. Lubricant
B. Abrasive
C. Lead pencils
D. Electrode of electrolytic cell

The composition of brown ring in nitrate test is_________________?

A. FeSO4.No
B. FeSO4.No3
C. FeSO4.No2
D. FeSO4.N2o

Which one of the following compounds usually smells like garlic ?

A. P2O3
B. H3PO3
C. P2O5
D. All have same smell

The element of group VIA which is a non-metal is________________?

A. S
B. Te
C. Se
D. Po

Which of the elements show passivity when treated with conc. HNO3?

A. A
B. Fe
C. Cr
D. All of the above

The gas which cannot be dried by conc. H2SO4 ?

A. CO2
B. H2S
C. SO2
D. C2H4

FeSO4 forms brown ring with________________?

A. NO2
B. N2O3
C. NO
D. N2O

Oxygen does not react with all except_________________?

A. Acid
B. Alkali
C. Water
D. Metals

In which compound nitrogen has maximum oxidation state____________________?

A. NO2
B. N2O
C. HNO2
D. HNO3

Among the halogens the rare element is________________?

A. Chlorine
B. Fluorine
C. Astatine
D. Iodine

Vander Waals forces are stronger in_______________?

A. Cl2
B. F2
C. Br2
D. I2

The most powerful oxidizing agent among the halogens is__________________?

A. F2
B. Br2
C. Cl2
D. I2

The halogen which reacts spontaneously with gold (Au) to form Au+3 is ________________?

A. Br2
B. Cl2
C. F2
D. I2

The halogen which reacts very slowly with halogen is________________?

A. Chlorine
B. Fluorine
C. Bromine
D. Iodine

The halogen having highest electron affinity is_____________________?

A. Bromine
B. Chlorine
C. Fluorine
D. Iodine

Bromine can be liberated from KBr solution by the action of _______________?

A. NaCl
B. Chlorine
C. Iodine solution
D. Ki

Consider the following reaction- 2KCIO3 + H2C2O4 + H2SO4 ? K2SO4 + 2H2O + 2CO2 + Oxide Which oxide of chlorine is produced in the above reaction ?

A. Cl2O6
B. ClO2
C. Cl2O
D. Cl2O7

Consider the following reaction- 3Cl2 + 6NaOH ? NaClO3 + 5NaCl + 3H2O This reaction is_______________?

A. Double displacement reaction
B. Displacement reaction
C. Disproportionation reaction
D. Reduction reaction

Which of the halogen can displace other three elements ?

A. Flourine
B. Iodine
C. Chlorine
D. Bromine

Chemistry Mcqs

The chemical formula of sodium hypochlorite is________________?

A. NaCLO
B. NaClO3
C. NaClO2
D. NaClO4

Bleaching powder is not used for bleaching________________?

A. Linen
B. Costly fabrics
C. Cotton
D. Paper pulb

Which of the following is not use of compounds of Fluorine________________?

A. SbF3 is used for manufacture of pottery
B. Cu F2 is used in ceramic industry
C. Sodium fluoroacetate is a rat poison
D. None of the above

Photographic plates are coated with a thin film of _________________?

A. AgI
B. AgNO3
C. AgCl
D. AgBr

Indicate the correct statement__________________?

A. Br2 is more reactive than Cl2
B. I2 is a volatile solid
C. Cl2 is the strongest oxidizing agent
D. Cl2 is insoluble in water

Which one of the following halogens is present in Teflon________________?

A. I2
B. Cl2
C. Br2
D. F2

Which is the paramagnetic oxide of chlorine ?

A. Cl2O6
B. Cl2O7
C. ClO2
D. all

The colour of chlorine gas is_______________?

A. reddish brown
B. freenish yellow
C. pale yellow
D. grayish black

Which of the following statements is incorrect about fluorine_______________?

A. fluorine is restricted to -1 oxidation state
B. fluorine has lowest dissociation energy among the halogens
C. fluorine follows octet rule and as well as extended octet rule
D. both B and C

Which one of the following is the weakest acid in water__________________?

A. HF
B. HBr
C. HCI
D. HI

Which of the following represents the correct electronic configuration of VII A group elements in the ground state ?

A. ns2p4
B. ns2p2
C. ns2p5
D. ns2p6

Which is the strongest acid ?

A. HCIO2
B. HCIO
C. HCIO3
D. HCIO4

Bleaching powder is an example of________________?

A. Double salt
B. Normal salt
C. Mixed salt
D. Complex

Which of the following oxides of iodine is used for quantitative analysis of CO ?

A. I4O2
B. I2O4
C. I2O5
D. All are equally useful

Which of the halogen has highest electronegativity ?

A. Fluorine
B. Bromine
C. Chlorine
D. Iodine

Which of the following statements is incorrect about halogens ?

A. All the halogens have electronic conviguration ns2p5
B. All are non-metals
C. They have high electron attinity and ionization energy
D. All the halogens react with noble gases to form their halides

Fluorine can react with_________________?

A. Kr
B. Xe
C. Rn
D. All of the above

Which of the following is the weakest reducing agent ?

A. HF
B. HC
C. HBr
D. HI

In which compound of Xenon the oxidation state of Xenon is + 6?

A. XeOF2
B. XeOF4
C. XeF4
D. Na4XeO6

The anhydride of HCIO4 is_________________?

A. Cl2O6
B. Cl2O
C. ClO2
D. Cl2O7

Alkanes containing a methyl group on main chain at 2nd carbon are called________________?

A. iso-alkane
B. neo-alkane
C. normal-alkane
D. branched-alkane

Alkanes are also known as________________?

A. unsaturated hydrocarbon
B. saturated hydrocarbon
C. paraffins
D. both A & C

Hydrogenolysis results in the formation of________________?

A. alkane
B. alkyne
C. alkene
D. aldehydes

Removal of CO2 is called_____________________?

A. esterification
B. decarboxylation
C. carboxylation
D. hydroxylation

Molozonide is unstable and changes into ozonide on_________________?

A. oxidation
B. reduction
C. hydrolysis
D. rearrangement

R-Mg-Br is called___________________?

A. Metallic alkyl halide
B. Grignard reagent
C. Both A & B
D. Alkyl

Which of the following is the most reactive_________________?

A. ethyne
B. ethane
C. ethene
D. benzene

Introduction of nitro group in a molecule is called___________________?

A. nitration
B. sulphonation
C. halogenation
D. amination

Chemistry Mcqs

The gas used in manufacturing of urea fertilizer__________________?

A. C2H4
B. C2H6
C. C2H2
D. CH4

Which of the following will be acidic_____________?

A. 1-butyne
B. propyne
C. ethyne
D. all of the above

Alkenes are produced from dehalogenation of________________?

A. trihalo alkane
B. dihalo alkane
C. vicinal dihalo alkane
D. vicinal trihalo alkane

In unsaturated hydrocarbons electrons favour___________________?

A. substitution reactions
B. addition reactions
C. less reactivity
D. none

Which one is Chloroform_________________?

A. CH3Cl
B. CH2Cl2
C. CHCl3
D. CCl4

Which is used for artificial ripening of fruit ?

A. ethyne
B. ethene
C. ethane
D. methane

Preparation of vegetable ghee involves_________________?

A. hydroxylation
B. halogenation
C. hydrogenation
D. hydration

Which is methyl cyanide_________________?

A. CH3NO2
B. CH3NH2
C. CH3CN
D. CH2 = CH – CN

When one hydrogen atom of alkane is removed then it is called________________?

A. aldehyde
B. alkyl
C. alkene
D. saturated hydrocarbon

Sabatier Senderns reaction involve _____________ in presence of Ni?

A. Aalkene & H2
B. alkene & N2
C. alkene & O2
D. alkyne & Cl2

Clemmensens reduction infolves the reduction of___________________?

A. ketone
B. alkane
C. aldehyde
D. all of the above

Soda lime is a mixture of____________________?

A. NaOH and Na2O
B. CaO and NaOH
C. CaO and KOH
D. Na2O and KOH

Dehalogenation of ethyl tetrahalide will give____________________?

A. ethyl halide
B. ethyne
C. ethene
D. all of the above are possible

Upto ___________________ C atoms alkanes are gases?

A. 3
B. 2
C. 4
D. 6

Incomplete oxidation of methane in the limited supply of air forms ?

A. CO + H2 + C
B. CH3OH
C. CO2 and H2O
D. CO + H2O + C

Order of ease of halogenation in alkane is________________?

A. F2>Cl2>I2>Br2
B. I2>Cl2>Br2>F2
C. F2>Cl2>Br2>I2
D. Cl2>F2>Br2>I2

General formula of alkyne is______________?

A. CnH2n
B. CnH2n – 2
C. CnH2n + 2
D. CnH2n + 2

Removal of halogen and hydrogen atom is_________________?

A. dehalogenation
B. halogenation
C. dehydrohalogenation
D. hydrohalogenation

Reactivity due to pi-electrons is present in_________________?

A. alkane
B. alkyne
C. alkene
D. both B & C

Raney nickel is prepared from ______________________ by treating with caustic soda?

A. Ni-Fe alloy
B. Ni-Cu alloy
C. Ni-Al alloy
D. Ni-Mg alloy

Vinylacetylene combines with HCI to form___________________?

A. benzene
B. polyacetylene
C. chloroprene
D. divinyl acetylene

Which C-X bond has the highest bond energy per mole ?

A. C-F
B. C-Br
C. C-C
D. C-I

Chemistry Mcqs – (Science) MCQs Latest For FPSC, PPSC, NTS, KPPSC, SPSC & Other Tests

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