Chemistry MCQ (Multiple Choice Questions) - SchoolingAxis

Chemistry MCQ (Multiple Choice Questions)

 Que- Which group contains elements that exist as monoatomic molecule? 

a. 1  

b. 2  

c. 14  

d. 18 


Answer- 18


Que- The element having electronic configuration [kr] 4d10, 4f14,5s2,5p6,5d1,6s2 belongs to __________? 

a. S-Block  

b. P-Block  

c. d-Block  

d. f-Block 


Answer- f-Block


Que- Which one of the following is a bridge element? 

a. Be  

b. Cl  

c. K  

d. P 


Answer- Be


Que- Which of the following aqueous solutions would have the highest boiling point? 

a. 0.20 m glucose  

b. 0.20 m NaCl  

c. 0.15 m CaCl2  

d. 0.25 m sucrose 


Answer- 0.15 m CaCl2


Que- The mass of 3.2 moles of ammonia (NH3) gas? 

a. 53.4 grams  

b. 54.4 grams  

c. 55.4 grams  

d. 56.4 grams 


Answer- 54.4 grams


Que- How many moles are in 22.2 grams of Calcium chloride, CaCl2? 

a. 0.2 moles  

b. 0.3 moles  

c. 0.4 moles  

d. 0.5 moles 


Answer- 0.2 moles


Que- What is the mass percent of silver in silver notrate, AgNO3? 

a. 64.5%  

b. 65.6%  

c. 63.5%  

d. 61.5% 


Answer- 63.5%


Que- A sample of an iron and oxygen ore has a mass of 35.8 grams. The iron in the compound has a mass of 27.9 grams. What is the percent iron in the ore? 

a. 74% Fe  

b. 75% Fe  

c. 77% Fe  

d. 78% Fe 


Answer- 78% Fe


Que- A compound is determined to have an emperical formula of C2H6O and a molar mass of 138 g/mole. What is the molecular formula? 

a. C2H6O  

b. C6H18O3  

c. C6H12O6  

d. C2H5O 


Answer- C6H18O3


Que- A substance is analyzed and found to have an emperical formula of CH2 and a molar mass of 56g/mole. What is the molecular formula of the compound? 

a. C2H4  

b. C3H6  

c. C4H8  

d. C5H10 


Answer- C4H8


Que- The number of atoms present in 21.6 gram of silver (atomic weight = 108) are same as the molecules in__________? 

a. 1.8 gram of H2O  

b. 12 moles of KMnO4  

c. 0.6N H2SO4  

d. 4.6 gram of C2H5OH 


Answer- 12 moles of KMnO4


Que- The molecular formula for cholesterol is C27 H46 O. What are the degrees of unsaturation for this compound? 

a. 5  

b. 6  

c. 7  

d. 8 


Answer- 5


Que- What is the density ofargon gas at a temperature of 30°C and a pressure of 1.05 atm? 

a. 1.65 g/L  

b. 1.67 g/L  

c. 1.68 g/L  

d. None of the above 


Answer- 1.68 g/L


Que- The formula C6H5-CO-CH3 represents_______ ? 

a. Acetone  

b. Acetic acid  

c. Acetophenone  

d. Phenyl acetate 


Answer- Acetophenone


Que- Poisonous gas present in the exhaust fumes of a jet plane is__________? 

a. Flurocarbon  

b. Carbon monoxide  

c. Methane  

d. C2H2 


Answer- Carbon monoxide


Que- The O-O linkage is present in__________? 

a. H2S2O3  

b. H2SO8  

c. H2S4O6  

d. H2 S2 O6 


Answer- H2SO8


Que- The number of lone pairs in XeOF4 is_________? 

a. O  

b. 1  

c. 2  

d. 3 


Answer- 1


Que- Argon gas was discovered by_______? 

a. Rayleigh  

b. Ramsay  

c. Lockerey  

d. Dalton 


Answer- Ramsay


Que- SO2 reacts with Cl in sunlight to form__________? 

a. Sulphur dioxide  

b. Sulphuryl chloride  

c. Suphanyl chloride  

d. All of the above 


Answer- Sulphuryl chloride


Que- Oxidation state +1 for phosphorous is found in___________? 

a. H3PO3  

b. H3PO4  

c. H3PO2  

d. H2P2O7 


Answer- H3PO2


Que- Electric bulb filament is made of__________? 

a. Copper  

b. Aluminum  

c. Lead  

d. Tungsten 


Answer- Tungsten


Que- Tetraethyl lead is used as______? 

a. Pain Killer  

b. Fire Extinguisher  

c. Mosquito Repellent  

d. Petrol Additive 


Answer- Petrol Additive


Que- The average salinity of sea water is________? 

a. 3%  

b. 3.5%  

c. 2.5%  

d. 2% 


Answer- 3.5%


Que- The chemical (Ethyl Mercaptan) added to the otherwise odourless LPG cooking gas for imparting a detectable smell to the gas is a compound of:_______? 

a. Bromine  

b. Fluorine  

c. Chlorine  

d. Sulphur 


Answer- Sulphur


Que- Marsh gas is_______? 

a. Nitrogen  

b. Ethane  

c. Methane  

d. Hydrogen 


Answer- Methane


Que- Potassium Permanganate is used for purifying drinking water, because_________? 

a. It is a sterilising agent.  

b. It dissolves the impurities of water.  

c. It is a reducing agent.  

d. It is an oxidising agent. 


Answer- It is an oxidising agent.


Que- Find the PH of a 0.001 M solution of Nitric acid HNO3? 

a. 2  

b. 3  

c. 4  

d. 5 


Answer- 3


Que- Which set of quantum numbers is not allowed? 

a. n=2,l=1,m1=0,ms=+1/2  

b. n=2,l=1,m1=-1,ms=+1/2  

c. n=2,l=0,m1=0,ms=-1/2  

d. n=2,l=2,m1=1,ms=-1/2 


Answer- n=2,l=2,m1=1,ms=-1/2


Que- The purpose of Smelting an ore is to________? 

a. Reduce it  

b. Oxidize it  

c. Obtain an alloy  

d. Separate volatile impurities 


Answer- Reduce it


Que- Which Oxide of Manganese is amphoteric? 

a. MnO2  

b. Mn2O3  

c. Mn2O7  

d. MnO 


Answer- MnO2


Que- A process used for the Concentration of Ore is________? 

a. Roasting  

b. Forth flotation  

c. Electrolysis  

d. Distillation 


Answer- Forth flotation


Que- Which metal is used as a reducing agent in Smelting______? 

a. C  

b. Zn  

c. Al  

d. Cu 


Answer- C


Que- Parke’s process is used in the extraction of________? 

a. Iron  

b. Sodium  

c. Silver  

d. Zinc 


Answer- Silver


Que- In melting of iron, which of the following reactions takes place in Bladt Furnace at 400°C- 600°C________? 

a. CaO+ SiO2——> CaSiO3  

b. 2FeS+3O2——–> 2Fe+ SO2  

c. FeSiO3———> FeSiO3  

d. Fe2O3+ 3CO——–> 2Fe+ 3CO2 


Answer- Fe2O3+ 3CO——–> 2Fe+ 3CO2


Que- Gypsum is______? 

a. CaSO4  

b. CaSO4.1/2H2O  

c. CaSO4,2H2O  

d. CaSO4.3H2O 


Answer- CaSO4,2H2O


Que- Basicity of orthophosphoric acid is________? 

a. 2  

b. 3  

c. 4  

d. 5 


Answer- 3


Que- Ce58 is a member of__________? 

a. S-block  

b. P-block  

c. d-block  

d. f-block 


Answer- f-block


Que- Electronic Configuration of Calcium (Ca) atom may be written as________? 

a. Ne, 4p2  

b. Ar, 4s2  

c. Ne, 4s2  

d. Kr,4p2 


Answer- Ar, 4s2


Que- A 10 volume solution of H2O2 means_______? 

a. 10 grams of H2O2 solution liberate 10 mL of O2 at STO  

b. 10 gram equivalents of H2O2 liberates 10 mL of O2 at STP  

c. 10 litres of H2O2 liberates 19 mL of O2 at STP  

d. 1mL of solution of H2O2 liberates 10 mL of O2 at STP 


Answer- 1mL of solution of H2O2 liberates 10 mL of O2 at STP


Que- The volume strength of 1.5 N H2O2 solution is_______? 

a. 4.8  

b. 5.2  

c. 8.8  

d. 8.4 


Answer- 8.4


Que- The structure of H2O2 is_______? 

a. Planar  

b. Non- polar  

c. Spherical  

d. Linear 


Answer- Non- polar


Que- Which of the following element has the maximum electron affinity_____? 

a. Cl  

b. Br  

c. I  

d. F 


Answer- Cl


Que- The type of hybridisation of boron in diborane is______? 

a. Sp- hybridisation  

b. Sp2- hybridisation  

c. Sp3- hybridisation  

d. Sp3d2- hybridisation 


Answer- Sp- hybridisation


Que- Which of the following shows electrical conduction_____? 

a. Potassium  

b. Graphite  

c. Diamond  

d. Sodium 


Answer- Graphite


Que- Cassiterite is an ore of_______? 

a. Mn  

b. Ni  

c. Sb  

d. Sn 


Answer- Sn


Que- Percentage of lead in lead pencil is________? 

a. Zero  

b. 20  

c. 80  

d. 70 


Answer- Zero


Que- In borax bead test which compound is formed_________? 

a. Ortho burate  

b. Meta borate  

c. Double oxide  

d. Tetra borate 


Answer- Meta borate


Que- Water molecule is________? 

a. V-shaped  

b. Angular  

c. Pyramidal  

d. Triangular planer 


Answer- V-shaped


Que- I3( Tri-iodine) has shape_________? 

a. Trigonal bipyramidal  

b. Linear  

c. Square bipyramidal  

d. Both A and C 


Answer- Linear


Que- BeCl2 has the hybrid orbitaks of type_______? 

a. Sp2  

b. Sp3  

c. Sp  

d. dsp2 


Answer- Sp


Que- Molecular orbital Theory is also called_________? 

a. Bonding theory  

b. Band theory  

c. Antibondingtheory  

d. π and σ bonding theory 


Answer- Antibondingtheory


Que- Formula of Galena is________? 

a. PbS  

b. HgS  

c. AS2S3  

d. FeS2 


Answer- PbS


Que- Ethylene diammine is ligand________? 

a. mono dentate  

b. Bi dentate  

c. tri dentate  

d. Poly dentate 


Answer- Bi dentate


Que- The amount of Zinc (at. Wt=65) necessary to produce 224 ml of H2 by the reaction with an acid will be______? 

a. 0.065gm  

b. 0.65gm  

c. 6.5gm  

d. 7.5gm 


Answer- 7.5gm


Que- Which of the following compounds is not soluble in HNO3___? 

a. CuS  

b. CdS  

c. PbS  

d. AgCl 


Answer- AgCl


Que- Following are the anions of soap which form Ca and Mg ions which we see as curd in water 

a. Sodium hexadecanoate  

b. Sodium octadecanoate  

c. Sodium pentadecanoate  

d. Both A & B 


Answer- Both A & B


Que- The hybridization of nitrogen atom in pyridine is_______? 

a. Sp  

b. Sp2  

c. Sp3  

d. It is not hybridized 


Answer- Sp2


Que- The IUPAC name of pyridines is__________? 

a. Azolo  

b. Azine  

c. Azolidins  

d. Diazine 


Answer- Azine


Que- How many isomeric aldoses are possible for the molecular formula C6H12O6? 

a. 2  

b. 4  

c. 7  

d. 16 


Answer- 16


Que- The systematic name of sucrose is_______? 

a. 1-α-D- glucopyranosyl-2-β-D-fructopyranoside  

b. 11-α-D-glucopyranosyl-2-β-D-fructofuranoside  

c. 1-α-D- glucofuranosyl-2-α-D- fructopyranoside  

d. 1-β- D- glucofuranosyl-2-α- D- fructofuranoside 


Answer- 1-α-D- glucopyranosyl-2-β-D-fructopyranoside


Que- Treatment of sucrose with conc. HNO3 gives__________? 

a. Nitrosucrose  

b. Glucose+ fructose  

c. Oxalic acid  

d. Laevulinic acid 


Answer- Nitrosucrose


Que- Alpha (α) particles are helium (He) nucleus with a charge of __________ ? 

a. e  

b. 2e  

c. 3e  

d. 4e 


Answer- 2e


Que- Elements which emit natural radioactivity are known as __________ ? 

a. Radio elements  

b. Active elements  

c. Radioactive elements  

d. Nuclear elements 


Answer- Radioactive elements


Que- A helium nucleus comprising of two protons and two neutrons with a charge of 2e is _________ ? 

a. Beta particle  

b. Gamma particle  

c. Alpha particle  

d. Negative particle 


Answer- Alpha particle


Que- In SI base units, 1 Bq is equal to __________ ? 

a. 10 disintegration per second  

b. 1.5 disintegration per second  

c. 0.01 disintegration per second  

d. 1 disintegration per second 


Answer- 1 disintegration per second


Que- Chromatography is used to separate _________ ? 

a. Solution  

b. Mixtures  

c. Molecules  

d. Atoms 


Answer- Mixtures


Que- In a group, atomic radii increase due to successive increase of _________ ? 

a. Electronic shells  

b. Proton shells  

c. Neutron shells  

d. Nucleus 


Answer- Electronic shells


Que- Distance at which attractive forces of hydrogen overcome repulsive forces is __________ ? 

a. 75.2pm  

b. 75.3pm  

c. 75.5pm  

d. 75.4pm 


Answer- 75.4pm


Que- Quantum numbers are __________ ? 

a. Arithmetical values  

b. Numerical values  

c. Leometric values  

d. Logical values 


Answer- Numerical values


Que- Column of manometer which faces liquid is __________ ? 

a. Raised  

b. Depressed  

c. Compressed  

d. Remains same 


Answer- Depressed


Que- Process used to separate insoluble particles from liquids is ___________ ? 

a. Drying  

b. Filtration  

c. Sieving  

d. Extraction 


Answer- Filtration


Que- Effective volume is usually taken for ____________ ? 

a. 2 moles of gas  

b. 1 mole of gas  

c. 5 moles of gas  

d. 3moles of gas 


Answer- 1 mole of gas


Que- In whole Periodic Table which element Is Most Reducing Agent ? 

a. Chlorine  

b. lithium  

c. Helium  

d. Neon 


Answer- lithium


Que- One fathom is equal to:__________? 

a. 6 feet  

b. 6 meters  

c. 60 feet  

d. 100 cm 


Answer- 6 feet


Que- What are the metal bearing rocks called? 

a. Bitumen  

b. Bauxite  

c. Metalloids  

d. Ores 


Answer- Ores


Que- Soil pollution is caused by:_________? 

a. Aerosol  

b. Ozone  

c. Acid rain  

d. PAN 


Answer- Acid rain


Que- Radiations are harmful as it:___________? 

a. Causes skin cancer  

b. Causes anemia  

c. Alters body tissue  

d. is unstable 


Answer- Causes skin cancer


Que- The practical problem in Hydrogen production is it:______________? 

a. Weight  

b. Valency  

c. Size  

d. Chemical property 


Answer- Weight


Que- The number of ions produced by [Pt(NH3)]Cl2? 

a. 4  

b. 2  

c. 3  

d. 5 


Answer- 3


Que- Which of the following is solid? 

a. Water  

b. Stone  

c. Both  

d. None 


Answer- Stone


Que- Barret esophagus is good example of__________? 

a. Atrophy  

b. Dysplasia  

c. Metaplasia  

d. Hypertrophy E. Hyperplasia 


Answer- Metaplasia


Que- Which gas is used for artificial ripening of green fruit ? 

a. Carbon dioxide  

b. Acetylene  

c. Ethane  

d. Ethylene 


Answer- Ethylene


Que- Phonon is Quantum of___________? 

a. Longitudinal wave  

b. Elastic wave  

c. Transverse wave  

d. Electromagnetic wave 


Answer- Elastic wave


Que- The concept of ensemble was introduced by____________? 

a. Boltzmann  

b. Gibbs  

c. Carnot  

d. Mexwell 


Answer- Gibbs


Que- Which molecule have stronger London dispersion forces? 

a. Hydrogen gas  

b. Water  

c. Bromine  

d. Hydrochloric acid 


Answer- Water


Que- Urea as a fertilizer contains:____________? 

a. 57% N  

b. 73% N  

c. 46% N  

d. 53% N 


Answer- 46% N


Que- The gas dissolved in water that makes it basic is : 

a. Ammonia 

b. Sulphur dioxide 

c. Hydrogen 

d. Carbon dioxide 


Answer- Ammonia


Que- Which of the following acts as promoter for iron in Haber's process? 

a. Mn 

b. Mo 

c. Mg 

d. W 


Answer- Mo


Que- One property of ammonia is 

a. It is insoluble in water 

b. It is a odourless gas 

c. It is a yellowish gas 

d. Its aqueous solution turns red litmus blue 


Answer- Its aqueous solution turns red litmus blue


Que- Which one of the following is used for dating very old objects of archaeological importance? 

a. Phosphorus-31 

b. Tritium 

c. Radium 

d. Carbon-14 


Answer- Carbon-14


Que- In which of the following substances all carbon atoms are quaternary in nature ? 

a. Graphite 

b. Diamond 

c. Teflon 

d. Napthalene 


Answer- Diamond


Que- Cooking gas is a mixture of 

a. Methane and ethylene 

b. Carbon dioxide and oxygen 

c. Butane and propane 

d. Carbon monoxide and carbon dioxide 


Answer- Butane and propane


Que- Thermal electricity is generated by using which of these ? 

a. Coal only 

b. Coal and Natural Gas only 

c. Coal, Natural Gas and Petroleum 

d. None of these 


Answer- Coal, Natural Gas and Petroleum


Que- Which of the following is the major constituent of LPG? 

a. Methane 

b. Ethane 

c. Propane 

d. Butane 


Answer- Butane


Que- Which variety of coal contains recognisable traces of the original plant material ? 

a. Anthracite 

b. Lignite 

c. Peat 

d. Bitumen 


Answer- Peat


Que- Which of the following processes is used for the production of Biodiesel ? 

a. Transamination 

b. Transcription 

c. Transesterification 

d. Translation 


Answer- Transesterification


Que- Which of the following is used in welding broken pieces of iron rails and machine parts? 

a. Aluminium sulphate 

b. Solder 

c. Aluminium powder 

d. None of the above 


Answer- Aluminium powder


Que- Of the following commonly used materials, the one that is not an alloy is 

a. Steel 

b. Brass 

c. Bronze 

d. Copper 


Answer- Copper


Que- The manufacture of iron from iron ore involves the process of 

a. Oxidation 

b. Reduction 

c. Fractional distillation 

d. Electrolysis 


Answer- Reduction


Que- The manufacturing of iron from iron ore involves the process of 

a. Oxidation 

b. Reduction 

c. Electrolysis 

d. Fractional distillation 


Answer- Reduction

Previous Post Next Post