MCQOPTIONS
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MCQOPTIONS
This section includes 1184 Mcqs, each offering curated multiple-choice questions to sharpen your Chemistry knowledge and support exam preparation. Choose a topic below to get started.
| 1001. |
Commercial detergents contain mainly _____________? |
| A. | RCOON |
| B. | RONa |
| C. | RSNa |
| D. | ROsO3Na |
| Answer» B. RONa | |
| 1002. |
Combustion analysis is performed to determine__________________? |
| A. | Empirical formula |
| B. | Molecular mass |
| C. | Molecular formula |
| D. | Formula mass |
| Answer» B. Molecular mass | |
| 1003. |
Column of manometer which faces liquid is __________ ? |
| A. | Raised |
| B. | Depressed |
| C. | Compressed |
| D. | Remains same |
| Answer» C. Compressed | |
| 1004. |
Colour of fluorescene produced by cathode rays depends upon________________? |
| A. | Temperature |
| B. | Pressure |
| C. | Volume |
| D. | Composition of glass |
| Answer» E. | |
| 1005. |
Colour in transition metal compounds is attributed to____________? |
| A. | Small sized metal ions |
| B. | Absorption of light in UV region |
| C. | Complete ns sub-shell |
| D. | Incomplete (n-1) d sub-shell |
| Answer» E. | |
| 1006. |
Coal is produced after a long time decay of_________________? |
| A. | animals |
| B. | fossils |
| C. | wood |
| D. | all of the above |
| Answer» D. all of the above | |
| 1007. |
CO2 is gas while SiO2 is solid at room temperature? |
| A. | carbon is non-metal while silicon is semi-metal |
| 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. | Silicon has all sigma bonds |
| Answer» C. CO2 forms multiple bond while silicon does not form multiple bonds | |
| 1008. |
Co-enzymes are_________________? |
| A. | Non proteineous |
| B. | Proteineous |
| C. | sugars |
| D. | lipids |
| Answer» B. Proteineous | |
| 1009. |
Clemmensens reduction infolves the reduction of___________________? |
| A. | ketone |
| B. | aldehyde |
| C. | alkane |
| D. | all of the above |
| Answer» B. aldehyde | |
| 1010. |
Chromatography is used to separate _________ ? |
| A. | Solution |
| B. | Mixtures |
| C. | Molecules |
| D. | Atoms |
| Answer» C. Molecules | |
| 1011. |
Chlorination of water may be harmful if the water contains_________________? |
| A. | Ammonia |
| B. | Dissolved oxygen |
| C. | Carbon dioxide |
| D. | All |
| Answer» D. All | |
| 1012. |
Chlorine Cl when attached to benzene has________? |
| A. | +I and +R effect |
| B. | -1 and +R effect |
| C. | +1 and -R effect |
| D. | -I and -R effect |
| Answer» C. +1 and -R effect | |
| 1013. |
Chlorination of toluene in the presence of sublight produces_________________? |
| A. | Benzyl chloride |
| B. | o – chlorotoluene |
| C. | p – chlorotoluene |
| D. | benzoic acid |
| Answer» B. o – chlorotoluene | |
| 1014. |
Chemical used in salt bridge is________________? |
| A. | KOH |
| B. | KCI |
| C. | KNO3 |
| D. | KBr |
| Answer» C. KNO3 | |
| 1015. |
Chemical properties of first member of homologous series with respect to other members are_________________? |
| A. | same |
| B. | different |
| C. | depends upon number of C atoms |
| D. | depends upon number of H atoms |
| Answer» B. different | |
| 1016. |
Chemical equilibrium state is_______________? |
| A. | dynamic state |
| B. | static state |
| C. | free state |
| D. | unidirectional state |
| Answer» B. static state | |
| 1017. |
Chemical composition of cinnabar is____________________? |
| A. | FeS2 |
| B. | HgS |
| C. | PbS |
| D. | ZnS |
| Answer» C. PbS | |
| 1018. |
Charge of electron was measured by__________________? |
| A. | J.J Thomson |
| B. | Millikan |
| C. | Rutherford |
| D. | Perrin |
| Answer» C. Rutherford | |
| 1019. |
Centrifugal forces are balanced in atom by__________________? |
| A. | Attractive forces |
| B. | Repulsive force |
| C. | Electrons |
| D. | Neutrons |
| Answer» B. Repulsive force | |
| 1020. |
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» C. lime stone and gypsum | |
| 1021. |
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» B. Silica (SiO2) | |
| 1022. |
Ce58 is a member of__________? |
| A. | S-block |
| B. | P-block |
| C. | d-block |
| D. | f-block |
| Answer» E. | |
| 1023. |
Catalyst used to speed up the reaction of ammonia synthesis is________________________? |
| A. | V2O5 |
| B. | V2O5 and Pt |
| C. | Fe |
| D. | Pieces of Fe crystals are embedded in fused mixture of MgO Al2O3 and SiO2 |
| Answer» E. | |
| 1024. |
Cassiterite is an ore of_______? |
| A. | Mn |
| B. | Ni |
| C. | Sb |
| D. | Sn |
| Answer» E. | |
| 1025. |
Carnalite has chemical formula__________________? |
| A. | KCI |
| B. | KCI.MgCl2.6H2O |
| C. | Na2B4O7.10H2O |
| D. | CaCO3.MgCO3 |
| Answer» C. Na2B4O7.10H2O | |
| 1026. |
Carboxylic acid reacts with ammonia to form ammonium salts which on heating produces_______________? |
| A. | CO2 |
| B. | Alkane |
| C. | Ester |
| D. | Acidamide |
| Answer» E. | |
| 1027. |
Carboxylic acid on reduction with HI / phosphorous yields_________________? |
| A. | alkane |
| B. | alcohols |
| C. | aldehydes |
| D. | ketones |
| Answer» B. alcohols | |
| 1028. |
Carbon,Diamond and Graphite are together called:___________? |
| A. | Allotrope |
| B. | Isomers |
| C. | Isomorphs |
| D. | Isotopes |
| Answer» B. Isomers | |
| 1029. |
Carbonates of lithium are not stable like that of sodium due to________________? |
| A. | Low electronegativity |
| B. | Low electropositivity |
| C. | Low charge density |
| D. | Not known yet |
| Answer» C. Low charge density | |
| 1030. |
Carbon in wrought iron is present as_________? |
| A. | Silicon carbide |
| B. | Iron carbide |
| C. | Graphite |
| D. | Partly as iron carbide and partly as graphite |
| Answer» C. Graphite | |
| 1031. |
Carbohydrates are polyhydroxy compounds of___________________? |
| A. | Glucose |
| B. | Glyceraldehydes |
| C. | Oligosaccharides |
| D. | Aldehydes and ketones |
| Answer» E. | |
| 1032. |
Capacity of one lead accumulator cell is___________________? |
| A. | 1.5 volts |
| B. | 2 volts |
| C. | 3 volts |
| D. | 1 volts |
| Answer» C. 3 volts | |
| 1033. |
Cannizzaros reaction is not given by__________________? |
| A. | formaldehyde |
| B. | acetaldehyde |
| C. | benzaldehyde |
| D. | trimethyl acetaldehyde |
| Answer» C. benzaldehyde | |
| 1034. |
Cannizaros reaction takes place through the transfer of ____________________ from complex anion? |
| A. | hydrogen ion |
| B. | hydride ion |
| C. | oxide ion |
| D. | methoxide ion |
| Answer» C. oxide ion | |
| 1035. |
_______________ can expel proteons from paraffins ? |
| A. | Electron |
| B. | Positron |
| C. | Neutron |
| D. | None of above has such capability |
| Answer» D. None of above has such capability | |
| 1036. |
Calcarious material includes_________________? |
| A. | lime stone |
| B. | marble |
| C. | chalk |
| D. | all of the above |
| Answer» E. | |
| 1037. |
C5H12 has the number of isomers ___________________? |
| A. | one |
| B. | two |
| C. | three |
| D. | four |
| Answer» D. four | |
| 1038. |
By which method the molecular mass of benzene was determined as 78.108 ? |
| A. | Specific gravity method |
| B. | Vapour density method |
| C. | X-ray diffraction method |
| D. | Distillation methos |
| Answer» C. X-ray diffraction method | |
| 1039. |
By the addition of base in waterpH will be_______________? |
| A. | more than 7 |
| B. | less than 7 |
| C. | equal to 7 |
| D. | no effect |
| Answer» B. less than 7 | |
| 1040. |
By decreasing the pressure the reaction will go to that direction where_________________? |
| A. | volume is decreased |
| B. | volume increased |
| C. | heat absorbed |
| D. | no. of moles of specie decreased |
| Answer» C. heat absorbed | |
| 1041. |
By combining n atmic orbitals no. of hybrid orbitals will be__________________? |
| A. | 2n |
| B. | n |
| C. | 3n |
| D. | impossible to predict |
| Answer» C. 3n | |
| 1042. |
Butyl chloride gives possible isomers ? |
| A. | 2 |
| B. | 3 |
| C. | 4 |
| D. | 5 |
| Answer» D. 5 | |
| 1043. |
Bucky balls is an allotropic from of__________________? |
| A. | Sulphur |
| B. | Carbon |
| C. | Silica |
| D. | Tin |
| Answer» C. Silica | |
| 1044. |
Bromine can be liberated from KBr solution by the action of _______________? |
| A. | Iodine solution |
| B. | Chlorine |
| C. | NaCl |
| D. | Ki |
| Answer» C. NaCl | |
| 1045. |
Branch of chemistry that deals with the complete qualitative and quantitative analysis of a substance is___________________? |
| A. | Stoichio chemistry |
| B. | Physical chemistry |
| C. | Analytical chemistry |
| D. | Quantum chemistry |
| Answer» D. Quantum chemistry | |
| 1046. |
Boron is non-netal whereas A1 is metal. It is due to_______________________? |
| A. | Small size |
| B. | High nuclear charge |
| C. | Both A and B |
| D. | No authorized justification yet |
| Answer» D. No authorized justification yet | |
| 1047. |
Boron is non metal while other elements of IIIA group are metals. This is because______________? |
| A. | it has small size |
| B. | it has high nuclear charge |
| C. | it forms molecular addition compounds |
| D. | all of the above |
| Answer» E. | |
| 1048. |
Boron in soil has been considered micronutrient for_________________? |
| A. | Soil porocity |
| B. | Proper growth of plants |
| C. | Alkalinity of soil |
| D. | All |
| Answer» C. Alkalinity of soil | |
| 1049. |
Boric acid cannot be used__________________? |
| A. | As antiseptic in medicine |
| B. | For washing eyes |
| C. | In soda bottles |
| D. | For enamel and glazes |
| Answer» D. For enamel and glazes | |
| 1050. |
Borax is a white crystalline solid and it is_________________? |
| A. | More soluble in cold water |
| B. | More soluble in hot water |
| C. | Insoluble in water |
| D. | Soluble only in organic solvents |
| Answer» C. Insoluble in water | |