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.
| 851. |
Ideal gasses have all the following characteristics except ? |
| A. | Absence of intermolecular forces |
| B. | Collisions among the molecules of an ideal gas are perfectly elastic |
| C. | The molecules occupy no space |
| D. | All of the above are correct |
| Answer» D. All of the above are correct | |
| 852. |
Idea of pH and pOH was put forward by________________? |
| A. | Gibbs |
| B. | Einstein |
| C. | Sorenson |
| D. | Chadwick |
| Answer» D. Chadwick | |
| 853. |
I3( Tri-iodine) has shape_________? |
| A. | Trigonal bipyramidal |
| B. | Linear |
| C. | Square bipyramidal |
| D. | Both A and C |
| Answer» C. Square bipyramidal | |
| 854. |
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» E. | |
| 855. |
Hydrolysis of an oligosaccharide in the presence of acid yields________________? |
| A. | one monosaccharide unit |
| B. | No monosaccharide unit |
| C. | 2-9 monosaccharide unit |
| D. | many monosaccharide |
| Answer» D. many monosaccharide | |
| 856. |
Hydrogenolysis results in the formation of________________? |
| A. | alkane |
| B. | alkene |
| C. | alkyne |
| D. | aldehydes |
| Answer» B. alkene | |
| 857. |
Hydrogen resembles with carbon because of having________________? |
| A. | Same number of electrons in the valence shell |
| B. | Similar physical state |
| C. | Remarkable reducing properties |
| D. | Homovalent (show same valency) |
| Answer» D. Homovalent (show same valency) | |
| 858. |
Hydrogen effuses four times more rapidly than volume of an unknown gas molar mass of unknown gas should be_______________? |
| A. | 16 gmol-1 |
| B. | 32 gmol-1 |
| C. | 48 gmol-1 |
| D. | 64 gmol-1 |
| Answer» C. 48 gmol-1 | |
| 859. |
Hydrogen bonding is involved in____________________? |
| A. | Solubility |
| B. | Cleansing action of detergents |
| C. | Biological molecules |
| D. | All |
| Answer» E. | |
| 860. |
Hydrocarbon is formed when Grignard reagent is treated with___________? |
| A. | H2O |
| B. | CH3OH |
| C. | Both a and b |
| D. | None of the above |
| Answer» B. CH3OH | |
| 861. |
Hydro carbons which burn with smoky flame are called_________________? |
| A. | Aliphatic |
| B. | Alicyclic |
| C. | Aromatic |
| D. | Aldehyde |
| Answer» D. Aldehyde | |
| 862. |
Hydration is a process in which_________________? |
| A. | Molecules are surrounded by solvent molecules |
| B. | Ions are surrounded by solvent molecules |
| C. | Both ions and molecules are surrounded by solvent molecules |
| D. | Both ions and molecules are surrounded by water molecules |
| Answer» E. | |
| 863. |
How many zones through which the charge passes in a rotary kiln ? |
| A. | 4 |
| B. | 3 |
| C. | 2 |
| D. | 5 |
| Answer» B. 3 | |
| 864. |
How many moles of H2 are added up when benzene is heated with hydrogen in the presence of platinum ? |
| A. | Two |
| B. | Three |
| C. | Four |
| D. | Six |
| Answer» C. Four | |
| 865. |
How many isotopes have odd atomic number ? |
| A. | 154 |
| B. | 280 |
| C. | 86 |
| D. | 300 |
| Answer» D. 300 | |
| 866. |
How many isomeric aldoses are possible for the molecular formula C6H12O6? |
| A. | 2 |
| B. | 4 |
| C. | 7 |
| D. | 16 |
| Answer» E. | |
| 867. |
How many electrons are there in benzene to form delocalized electron cloud________________? |
| A. | 3 |
| B. | 4 |
| C. | 6 |
| D. | 8 |
| Answer» D. 8 | |
| 868. |
Homogeneous mixture of two or more than two compounds is called__________________? |
| A. | solution |
| B. | compound |
| C. | radical |
| D. | ion |
| Answer» B. compound | |
| 869. |
Higher value of electron affinity means__________________? |
| A. | Atom will lose electron easily |
| B. | Atom will gain electron easily |
| C. | Atom may form di-positive ion |
| D. | The reason is unknown |
| Answer» C. Atom may form di-positive ion | |
| 870. |
Heating phenol with Zn will yield_________________? |
| A. | Benzene |
| B. | Benzoic acid |
| C. | Phenoxide |
| D. | Cyclohexane |
| Answer» B. Benzoic acid | |
| 871. |
Halides in which halogen atoms act as a bridge between two atoms of the other element are called___________________? |
| A. | Covalent halides |
| B. | Electronegative halides |
| C. | Polymeric halides |
| D. | Polymeric hydrides |
| Answer» D. Polymeric hydrides | |
| 872. |
H2 gas in SHE is filled at pressure of___________________? |
| A. | 760mm of Hg |
| B. | 750mm of Hg |
| C. | 780mm of Hg |
| D. | 800mm of Hg |
| Answer» B. 750mm of Hg | |
| 873. |
Gypsum is______? |
| A. | CaSO4 |
| B. | CaSO4.1/2H2O |
| C. | CaSO4,2H2O |
| D. | CaSO4.3H2O |
| Answer» D. CaSO4.3H2O | |
| 874. |
Gypsum is applied to the soil as a source of________________? |
| A. | Ca and P |
| B. | S and P |
| C. | Ca and S |
| D. | we could not apply |
| Answer» D. we could not apply | |
| 875. |
Group VIB of transition elements contains___________________? |
| A. | Zn Cd Hg |
| B. | Fe Ru Os |
| C. | Cr Mo W |
| D. | Mn Te Re |
| Answer» D. Mn Te Re | |
| 876. |
Grignard reagent is reactive due to___________________? |
| A. | the presence of halogen atom |
| B. | the presence of magnesium atom |
| C. | the polarity of C-Mg bond |
| D. | all |
| Answer» D. all | |
| 877. |
Grignard reagent gives carboxylic acid with____________? |
| A. | CO2 |
| B. | CH3CHO |
| C. | COC2 |
| D. | HCN |
| Answer» B. CH3CHO | |
| 878. |
Greater value of standard reduction potential smaller will be tendency______________? |
| A. | to form positive ions |
| B. | to form negative ions |
| C. | gain electrons |
| D. | all are possible |
| Answer» B. to form negative ions | |
| 879. |
Greater value of standard reduction potential greater will be tendency__________________? |
| A. | to get oxidized |
| B. | to get reduced |
| C. | to accept electrons |
| D. | both B and C |
| Answer» E. | |
| 880. |
Greater the conc. Of reactant__________________? |
| A. | Greater will be dx/dt |
| B. | Lesser will be dx/dt |
| C. | dx/dt will be moderate |
| D. | any of above |
| Answer» B. Lesser will be dx/dt | |
| 881. |
Greater shielding effect corresponds to ionization energy value___________________? |
| A. | Greater |
| B. | Lesser |
| C. | Remain same |
| D. | No effect |
| Answer» C. Remain same | |
| 882. |
Gooch Crucibles are made up of________________? |
| A. | plastic |
| B. | fibre |
| C. | porcelain |
| D. | steel |
| Answer» D. steel | |
| 883. |
Glycine is the name of an amino acid because___________________? |
| A. | Sweet taste |
| B. | Bitter taste |
| C. | Shining appearance |
| D. | Green colour |
| Answer» B. Bitter taste | |
| 884. |
Geometry of the complex compounds usually depends upon __________________? |
| A. | type of ligands |
| B. | types of hybridization in the elements of ligands |
| C. | hybridization of central metal |
| D. | All of above |
| Answer» D. All of above | |
| 885. |
Geometry of simple molecule having sp3 hybrid orbital is ___________________? |
| A. | Triangular |
| B. | Tetrahedral |
| C. | Square planner |
| D. | Linear |
| Answer» C. Square planner | |
| 886. |
Geometric isomerism is usually found in___________________? |
| A. | Alkanes |
| B. | Alkenes |
| C. | Alkynes |
| D. | Esters |
| Answer» C. Alkynes | |
| 887. |
Geometry of molecule will be pyramidal if the outer post shell of the central atom has___________________? |
| A. | 3 bond pair one lone pair |
| B. | 2 bond pair 2 lone pair |
| C. | 1 bond pair 3 lone pair |
| D. | 3 lone pair 1 bond pair |
| Answer» B. 2 bond pair 2 lone pair | |
| 888. |
Generally the limit of visible spectrum is__________? |
| A. | 1000 to 300 A° |
| B. | 3800 to 7600 A° |
| C. | 8000 to 10,000 A° |
| D. | 12,000 to 15,000 A° |
| Answer» C. 8000 to 10,000 A° | |
| 889. |
General formula of alkyne is______________? |
| A. | CnH2n + 2 |
| B. | CnH2n – 2 |
| C. | CnH2n |
| D. | CnH2n + 2 |
| Answer» C. CnH2n | |
| 890. |
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» E. | |
| 891. |
Free neutron changes into proton with the emission of__________________? |
| A. | Neutrino |
| B. | Electron |
| C. | Both A & B |
| D. | Meson |
| Answer» D. Meson | |
| 892. |
Formula of Chile saltpetre is__________________? |
| A. | NaNO3 |
| B. | CaCO3 |
| C. | Ba (NO3)2 |
| D. | NH4Cl |
| Answer» B. CaCO3 | |
| 893. |
Formula of haloform is_________________? |
| A. | HCOX |
| B. | CX4 |
| C. | CHX3 |
| D. | CH3X |
| Answer» D. CH3X | |
| 894. |
Formula of Galena is________? |
| A. | PbS |
| B. | HgS |
| C. | AS2S3 |
| D. | FeS2 |
| Answer» B. HgS | |
| 895. |
Formation of vapours from the surface of a liquid is called________________? |
| A. | vapourization |
| B. | evaporation |
| C. | condensation |
| D. | cracking |
| Answer» C. condensation | |
| 896. |
Formalin is ___________ solution of formaldehyde in water? |
| A. | 10% |
| B. | 20% |
| C. | 40% |
| D. | 60% |
| Answer» D. 60% | |
| 897. |
Formaldehyde condenses with phenol in the presence of dilute H2SO4 to yield________________? |
| A. | Nylon 66 |
| B. | urotropine |
| C. | Aniline formaldehyde plastic |
| D. | Bakelite |
| Answer» E. | |
| 898. |
Formalin consists of mixture of formaldehyde methyl alcohol and water Percentage of water in it is________________? |
| A. | 60% |
| B. | 50% |
| C. | 52% |
| D. | 8% |
| Answer» D. 8% | |
| 899. |
Formaldehyde and lactose are combined to produce throat lozenges named as__________________? |
| A. | formamint |
| B. | lactomint |
| C. | aldomint |
| D. | formalactose |
| Answer» B. lactomint | |
| 900. |
Forces of attraction which may be present between all kinds of atoms and molecules are _____________________? |
| A. | intramolecular |
| B. | intermolecular |
| C. | van der Waal |
| D. | Dipole-induced dipole |
| Answer» D. Dipole-induced dipole | |