Chemistry MCQ (Multiple Choice Questions) - SchoolingAxis

Chemistry MCQ (Multiple Choice Questions)

 Que-  Lipids are soluble in 

a. Organic solvents 

b. Organic and inorganic solvents 

c. Inorganic solvents 

d. Solubility has nothing to do with lipids 


Answer- Organic solvents


Que-  Animal fats are located particularly in 

a. Skeleton tissues 

b. Cardiac tissues 

c. Connective tissues 

d. Adipose tissues 


Answer- Adipose tissues


Que-  Animal and vegetable fats are 

a. Glycerols 

b. Fatty acids 

c. Triesters formed from glycerol and fatty acids 

d. Tetraesters formed from glycerol and fatty acids 


Answer- Triesters formed from glycerol and fatty acids


Que-  Lipopolysaccharides are examples of 

a. Derived lipids 

b. Simple lipids 

c. Compound lipids 

d. Not a type of lipids 


Answer- Compound lipids


Que-  Triglycerides are easily hydrolyzed by enzymes called 

a. Lyases 

b. Ligases 

c. Lipases 

d. Hydrolases 


Answer- Lipases


Que-  Saponification is the hydrolysis of fat or oil with an 

a. Acid 

b. Alkali 

c. Enzyme and alkali 

d. Enzyme and acid 


Answer- Alkali


Que-  Enzynies that catalyze the transfer of groups within molecule are called 

a. Isomerases 

b. Lyases 

c. Transferases 

d. Ligases 


Answer- Isomerases


Que-  Enzymes from the same organism which catalyze same reaction but are chemically and physically distinct from each other are called 

a. Oxidoreductases 

b. Hydrolases 

c. Isoenzymes 

d. Isomerases 


Answer- Isoenzymes


Que-  Rate of enzymatic reaction is directly proportional to the concentration of 

a. Enzyme 

b. Substrate 

c. Enzyme and substrate 

d. Enzyme and product 


Answer- Substrate


Que-  Enzyme proved useful in cancer treatment is 

a. Lactic dehydrogenase 

b. Alkaline phosphatase 

c. L-asparaginase 

d. Cellulase 


Answer- L-asparaginase


Que-  Purines and pyrimidines are 

a. Enzymes 

b. Nitrogenous bases 

c. Carbohydrates 

d. Lipids 


Answer- Nitrogenous bases


Que-  Nucleic acids were first demonstrated in 

a. Pus cells 

b. Sperm heads 

c. 1872 

d. all of the above 


Answer- Pus cells


Que-  Nucleic acids direct the synthesis of 

a. Glucose 

b. Triglycerides 

c. Proteins 

d. All 


Answer- Proteins


Que-  The mechanism by which the genetic information can be duplicated is called 

a. Duplication 

b. Transcription 

c. Replication 

d. Mutation 


Answer- Replication


Que-  The nitrogenous base different in RNA as compared to DNA is 

a. Cytosine 

b. Thymine 

c. Adenine 

d. Guanine 


Answer- Thymine


Que-  The fertility of the soil is improved by 

a. Rotation of the crops 

b. Adding lime to the acid salts 

c. Adding manure and growing legumes 

d. All 


Answer- All


Que-  Which of the following is incorrect statement about nitrogen importance? 

a. It enhances plant growth 

b. It is involved in the synthesis of protein and nucleic acids 

c. it accelerates fruits and flowers growth 

d. It is involved in the chlorophyll synthesis 


Answer- it accelerates fruits and flowers growth


Que-  The fertilizers which provide single nutrient from NPK are called ______ fertilizer. 

a. straight 

b. compound 

c. both a and b 

d. none of the above 


Answer- straight


Que-  Which of the following is macronutrient? 

a. Cu 

b. Cl 

c. H 

d. Zn 


Answer- H


Que-  Addition of urea to the soil is _________ reaction. 

a. endothermic 

b. exothermic 

c. both a and b 

d. no heat energy is involved 


Answer- exothermic


Que-  Which of the following is the most suitable catalyst for ammonia synthesis? 

a. Pt 

b. ZnO + Cr2O3 

c. Fe in fused mixture of Al2O3 + SiQ2 + MgO 

d. All of the above 


Answer- Fe in fused mixture of Al2O3 + SiQ2 + MgO


Que-  The cooling of molten urea by air in the tower is called 

a. prilling 

b. evaporation 

c. condensation 

d. crystallization 


Answer- prilling


Que-  Which of the following fertilizers is not useful for paddy rice? 

a. urea 

b. DAP 

c. Ammonium sulphate 

d. Ammonium nitrate 


Answer- Ammonium nitrate


Que-  DAP (Diammonium hydrogen phosphate) contains _________ plant nutrients. 

a. 60% 

b. 65% 

c. 70% 

d. 75% 


Answer- 75%


Que-  Which of the following potassium fertilizers are more useful for horticultural crops tobacco & potatoes? 

a. KCI 

b. KNO3 

c. K2SO4 

d. KMnO4 


Answer- KNO3


Que-  Calcarious material includes 

a. lime stone 

b. marble 

c. chalk 

d. all of the above 


Answer- all of the above


Que-  Argillaceous material does not include 

a. vlay 

b. marine shells 

c. slate 

d. blast furnace slag 


Answer- marine shells


Que-  Which of the following processes is used for the synthesis of cement? 

a. dry process 

b. wet process 

c. both 

d. none 


Answer- both


Que-  Phosphorus helps in the growth of 

a. root 

b. leave 

c. stem 

d. seed 


Answer- seed


Que-  How many zones through which the charge passes in a rotary kiln? 

a. 4 

b. 3 

c. 2 

d. 5 


Answer- 4


Que-  The nutrients which are required in very small amount for the normal growth of plants are called 

a. nitrogenous fertilizers 

b. micronutrients 

c. phosphorus fertilizer 

d. all of the above 


Answer- micronutrients


Que-  Which one of the following set of raw material is most suitable for manufacture of urea? 

a. CH4 N2 and CO2 

b. H2 N2 and CO 

c. H2 CO2 and H2O 

d. H2O N2 and H2 


Answer- CH4 N2 and CO2


Que-  Which one of the following statement is correct for urea? 

a. it is a synthetic fertilizer 

b. it is a natural fertilizer 

c. it provides micronutrients to the plants 

d. it is an inorganic water soluble compound 


Answer- it is a synthetic fertilizer


Que-  The percentage of nitrogen in urea is 

a. 36% 

b. 46% 

c. 56% 

d. 66% 


Answer- 46%


Que-  Which one of the following is an inorganic fertilizer? 

a. manure 

b. urea 

c. ammonium nitrate 

d. All 


Answer- ammonium nitrate


Que-  Which one of the following fertilizers provides the nitrogen and phosphorus to the plant? 

a. urea 

b. calcium superphosphate 

c. diammonium phosphate 

d. potassium nitrate 


Answer- diammonium phosphate


Que-  The potassium present in plant help the plant to 

a. form starch sugar and fibrous material 

b. ripen the seeds and fruits 

c. increase the resistance against disease 

d. all the above statements are correct 


Answer- all the above statements are correct


Que-  Cement is a mixture of 

a. clay and clinker 

b. clay lime stone and gypsum 

c. lime stone and gypsum 

d. lime stone and clay 


Answer- clay lime stone and gypsum


Que-  What is clinker? 

a. roasted calcareous material 

b. roasted argillaceous material 

c. roasted calcareous and argillaceous material 

d. roasted gypsum 


Answer- roasted calcareous and argillaceous material


Que-  Cement is a mixture of so many compounds roasted in rotary kiln. Which substances has greater percentage? 

a. Lime (CaO) 

b. Silica (SiO2) 

c. Alumina (Al2O3) 

d. Magnesia (MgO) 


Answer- Lime (CaO)


Que-  Which one of the following raw material is not present in the cement? 

a. lime stone 

b. gypsum 

c. KNO3 

d. iron oxide 


Answer- iron oxide


Que-  Which sequence of steps is correct for the manufacture of cement? 

a. crushing heating mixing grinding 

b. crushing mixing heating grinding and mixing 

c. crushing grinding mixing heating 

d. mixing heating grinding crushing 


Answer- crushing grinding mixing heating


Que-  The sequence of zones in the rotary kiln are as 

a. dry zone burning zone decomposition zone cooling zone 

b. cooling zone burning zone decomposition zone dry zone 

c. burning zone cooling zone decomposition zone 

d. dry zone decomposition zone burning zone cooling zone 


Answer- dry zone decomposition zone burning zone cooling zone


Que-  The composition of mixture of clay and lime stone in the raw for cement material is 

a. 75% lime stone and 25% clay 

b. 25% lime stone and 75% clay 

c. 15% lime stone and 55% clay 

d. 55% lime stone and 15% clay 


Answer- 75% lime stone and 25% clay


Que-  The important function of burning zone in the rotary kilm is 

a. to dry the moisture of slurry 

b. to decompose lime stone to unslaked lime 

c. combination of different oxides like CaO SiO2 Fe2O3 and Al2O3 

d. to reduce the impurities 


Answer- combination of different oxides like CaO SiO2 Fe2O3 and Al2O3


Que-  Which of the following is not a heavy industry? 

a. iron 

b. fertilizer 

c. paper 

d. none 


Answer- none


Que-  Which of the following is a macronutrient? 

a. boron 

b. iron 

c. copper 

d. carbon 


Answer- carbon


Que-  Requirement of macronutrient per acre of the land is 

a. 5 to 200 kg 

b. 20-200 kg 

c. 200-400 kg 

d. 30-400 kg 


Answer- 5 to 200 kg


Que-  Three elements needed for the healthy growth of plants are 

a. N P K 

b. N K C 

c. N S P 

d. N Ca P 


Answer- N P K


Que-  Which of the following is not a secondary pollutant 

a. ozone 

b. carbonic acid 

c. sulphuric acid 

d. carbon dioxide 


Answer- carbon dioxide


Que-  Residence time of methane in the atmosphere is 

a. 3 - 7 days 

b. 2 -3 days 

c. 3 - 7 years 

d. 2 - 3 years 


Answer- 3 - 7 years


Que-  Major cause of SO2 on global scale is 

a. volcanoes 

b. electric sparks 

c. combustion 

d. all 


Answer- volcanoes


Que-  Hypochlorous acid is used for disinfecting the water it reacts with the dissolved ammonia producing 

a. NH2Cl 

b. NHCI2 

c. NCI2 

d. all of the above 


Answer- all of the above


Que-  Acid present in acid rain may be 

a. H2SO4 

b. HNO3 

c. both a and b 

d. none 


Answer- both a and b


Que-  The yellow colour in photochemical smog is due to presence of 

a. dinitrogen oxide 

b. nitrogen dioxide 

c. chlorine gas 

d. chlorine dioxide 


Answer- nitrogen dioxide


Que-  Which of the following is not a condition for the formation of smog? 

a. sufficient NO 

b. sunlight 

c. less movement of air 

d. winds 


Answer- winds


Que-  Incineration of muncipal waste is carried out in the temperature range of 

a. 250 to 500Degree Centigrade 

b. 500 to 900Degree Centigrade 

c. 950 to 1300Degree Centigrade 

d. 900 to 1000Degree Centigrade 


Answer- 900 to 1000Degree Centigrade


Que-  In which of the following layer of atmosphere there is more thickness of ozone layer? 

a. troposphere 

b. stratosphere 

c. mesosphere 

d. photosphere 


Answer- stratosphere


Que-  Which of the following is not primary pollutant 

a. SO3 

b. CO 

c. NO 

d. H2SO4 


Answer- H2SO4


Que-  Which of the following air pollutants is more dangerous for ozone layer? 

a. CFC 

b. CO2 

c. CO 

d. Oxides of nitrogen 


Answer- CFC


Que-  Which of the following gases is the main cause of acid rain? 

a. CO 

b. NO2 

c. both a & b 

d. none of the above 


Answer- NO2


Que-  Which statement is wrong? 

a. the amount of ozone layer is greater in the region close to the equator 

b. ozone acts as filter for UV radiations 

c. in the equatorial region it acts as pollutant 

d. CFCs play effective role in removing O3 in the stratosphere 


Answer- the amount of ozone layer is greater in the region close to the equator


Que-  Which of the following factors help to measure quallity of water? 

a. DO 

b. BOD 

c. COD 

d. all of the above 


Answer- all of the above


Que-  In the purification of portable water the coagulant used is 

a. alum 

b. nickel sulphate 

c. copper sulphate 

d. barium sulphate 


Answer- alum


Que-  Newspaper can be recycled again and again how many times? 

a. 2 

b. 3 

c. 4 

d. 5 


Answer- 5


Que-  The main pollutant of leather tanneries in the waste water is 

a. chromium III 

b. chromium IV 

c. chromium V 

d. chromium VI 


Answer- chromium IV


Que-  A single chlorine free radical can destroy how many ozone molecules? 

a. 10 

b. 100 

c. 10000 

d. 100000 


Answer- 100000


Que-  Which substance can be used for disinfecting water? 

a. KMnO4 

b. Alums 

c. Ozone 

d. All 


Answer- KMnO4


Que-  Chlorination of water may be harmful if the water contains 

a. Ammonia 

b. Dissolved oxygen 

c. Carbon dixide 

d. All 


Answer- Ammonia


Que-  Which one of the following makes the bulk of hydrospheres content? 

a. oceans 

b. glaciers & icecaps 

c. fresh water lakes and ponds 

d. All have equal distribution 


Answer- oceans


Que-  Which of the following is used as water disinfectant to avoid the formation of toxic compounds 

a. Cl2 

b. O3 

c. ClO2 

d. both b & c 


Answer- both b & c


Que-  The percentage of suspended solid waste in raw water is removed by coagulation is 

a. 60 

b. 70 

c. 80 

d. 90 


Answer- 80


Que-  Ozone hole is substantial depletion of ozone in every year during 

a. Aug - Nov 

b. Sep - Nov 

c. Nov - Dec 

d. Dec - Jan 


Answer- Sep - Nov


Que-  The main product of bacterial action is 

a. Nox 

b. NO2 

c. N2O3 

d. NO 


Answer- NO


Que-  Pollutants have adverse effect over 

a. Biosphere 

b. Ecosystem 

c. Both a & b 

d. Hydrosphere 


Answer- Ecosystem


Que-  All the following variables are used to describle gases except 

a. pressure 

b. volume 

c. moles 

d. density 


Answer- density


Que-  In the van der Waals equation (P + n2a / v2) (v - nb) = nRT  which of the following statement is not true? 

a. n2a/v correct for the intermolecular forces. 

b. nb correct for the volume occupied by gas molecules. 

c. at high densities the equation reduces to the ideal gas law 

d. all of the above statements are correct. 


Answer- at high densities the equation reduces to the ideal gas law


Que-  Methyl alcohol is not used as 

a. a solvent 

b. an anti freezing agent 

c. a substitute for petrol 

d. for denaturing of ethyl alcohol 


Answer- a substitute for petrol


Que-  The inhaled breath of diabetics patient contain acetone. A medical student wishes to test for diabetes by asking patient to bubble their breath through a reagent. 

a. alkaline aquenous iodine 

b. aqueous bromine 

c. Fehling solution 

d. aqueous NaOH 


Answer- alkaline aquenous iodine


Que-  Oxygen (molecular weight = 32) diffuses at a rate of 10cm3/min under the same conditions of temperature and pressure how fast will hydrogen (molecular weight = 2) diffuse? 

a. 20cm3/min 

b. 40cm3/min 

c. 160cm3/min 

d. 5cm3/min 


Answer- 40cm3/min


Que-  When aquious bromine is added to aqueous phenol a creamy white ppt is obtained. What does this reaction show? 

a. phenol is unsaturated 

b. 2-bromophenol is insoluble in water 

c. a hydroxy group makes the benzene ring more susceptible to electrophilic attack 

d. acid-base reaction 


Answer- a hydroxy group makes the benzene ring more susceptible to electrophilic attack


Que-  As a substance moves from a solid to a liquid all of the following changes occur except: 

a. molecules become more disordered. 

b. K.E of the molecules decreases 

c. intermolecular forces become weaker. 

d. molecules move more frequently. 


Answer- K.E of the molecules decreases


Que-  The rectified spirit is 

a. 12% alcohol 

b. 90% alcohol 

c. 95% alcohol 

d. 100% alcohol 


Answer- 95% alcohol


Que-  Benzene is a good solvent for 

a. fats 

b. resins 

c. iodine 

d. all the above 


Answer- all the above


Que-  Which of the following solids show anisotropy 

a. Plastic 

b. Glass 

c. Rubber 

d. None of the above 


Answer- None of the above


Que-  Which of the following element doesnot show allotropy 

a. Carbon 

b. Arsenic 

c. Nitrogen 

d. Sulphur 


Answer- Nitrogen


Que-  Butyl chloride gives possible isomers. 

a. 2 

b. 3 

c. 4 

d. 5 


Answer- 4


Que-  Purines and pyrimidines are 

a. Enzymes 

b. Nitrogenous bases 

c. Carbohydrates 

d. Lipids 


Answer- Nitrogenous bases


Que-  Metallic crystals are soluble in 

a. Polar solvent 

b. Non polar solvent 

c. Fused metal 

d. None 


Answer- Fused metal


Que-  All the transition elements show 

a. Similar physical properties 

b. Similar chemical properties 

c. Both a and b 

d. None 


Answer- Both a and b


Que-  Paramagnetic behaviour of substance is measured by a balance called 

a. Analytical balance 

b. Guoys balance 

c. Electrical balance 

d. Single beam balance 


Answer- Guoys balance


Que-  In solids the temperature is the measure of 

a. Average kinetic energy of molecules 

b. Vibrational kinetic energy 

c. Translational kinetic energy 

d. None of the above 


Answer- Vibrational kinetic energy


Que-  Which of the following properties prove that cathode rays are material in nature 

a. they cast shadow 

b. they possess momentum 

c. they are negatively charged 

d. all of the above 


Answer- they possess momentum


Que-  Fruit juices and fizzy drinks such as lemonade are often sold in aluminium cans. What is the most important reason aluminium is a suitable metal? 

a. aluminium can be recycled 

b. aluminium has very low density 

c. aluminium is the most abundant metal in the earth crust 

d. aluminium is resistant to corrosion by organic acids. 


Answer- aluminium is resistant to corrosion by organic acids.


Que-  When an electron is moving with velocity of 2.188 x 106 ms-1 in the first orbit of Bohrs model of hydrogen. The de Broglie wavelength of electron is 

a. 33 nm 

b. 34 nm 

c. 35 nm 

d. 36 nm 


Answer- 33 nm


Que-  On heating aldehydes with Fehlings solution we get a precipitate whose colour is 

a. pink 

b. black 

c. yellow 

d. brick red 


Answer- brick red


Que-  When methl iodide and ethyl iodide are treated with sodium metal possible major products are obtained. 

a. 1 

b. 2 

c. 3 

d. 4 


Answer- 3


Que-  Which statement is consistent with Hunds rule. 

a. Electrons fill orbitals with parallel spins until all the orbitals of the same energy are half filled then they go into sub-shells with anti-parallel (opposite) spin. 

b. The electrons in the same atom cannot have the same four quantum numbers 

c. There is maximum of two electrons is an orbital. 

d. None 


Answer- Electrons fill orbitals with parallel spins until all the orbitals of the same energy are half filled then they go into sub-shells with anti-parallel (opposite) spin.


Que-  What is maximum number of electrons in an orbital with m (magnetic quantum number) = 3 

a. 6 

b. 4 

c. 3 

d. 2 


Answer- 2


Que-  Atomic number of Mn is 25 what is the electronic configuration in the ground state 

a. 1s2 2s2 2p6 3s2 3p6 3d7 

b. 1s2 2s2 2p6 3s2 3p6 4s2 4p5 

c. 1s2 2s2 2p6 3s2 3p5 3d10 

d. 1s2 2s2 2p6 3s2 3p6 4s23d5 


Answer- 1s2 2s2 2p6 3s2 3p6 4s23d5

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