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.
| 751. |
List of elements based on hydrogen scale is called________________? |
| A. | periodic table |
| B. | groups |
| C. | periods |
| D. | electrochemical series |
| Answer» E. | |
| 752. |
Liquid gets the shape of the container when it is poured into it. Which one of the following reasons justifies it ? |
| A. | Liquid do not have definite shape |
| B. | Liquid do not have definite volume |
| C. | Liquid is highly compressible |
| D. | Liquid molecules can slide over each other |
| Answer» E. | |
| 753. |
Liquid crystal is discovered by __________________? |
| A. | William Crooks |
| B. | Fredrack Reinitzer |
| C. | J.J Thomson |
| D. | Bravis |
| Answer» C. J.J Thomson | |
| 754. |
Lipopolysaccharides are examples of________________? |
| A. | Derived lipids |
| B. | Simple lipids |
| C. | Compound lipids |
| D. | Not a type of lipids |
| Answer» D. Not a type of lipids | |
| 755. |
Lipids are soluble in___________________? |
| A. | Organic solvents |
| B. | Organic and inorganic solvents |
| C. | Inorganic solvents |
| D. | Solubility has nothing to do with lipids |
| Answer» B. Organic and inorganic solvents | |
| 756. |
Linds method is employed for__________________? |
| A. | Separation of gases |
| B. | Expansion of gases |
| C. | Compression of gases |
| D. | Liquefaction of gases |
| Answer» E. | |
| 757. |
Li is different from its family members due to____________________? |
| A. | small size |
| B. | high charge density |
| C. | less electropositivity |
| D. | all of the above |
| Answer» E. | |
| 758. |
Lead accumulators are_______________? |
| A. | secondary cell |
| B. | primary cell |
| C. | voltaic cell |
| D. | both A & C |
| Answer» E. | |
| 759. |
Ketones are comparatively less reactive than aldehdye. It is due to_______________? |
| A. | alkyl groups are electron donating |
| B. | steric hindrance |
| C. | Both A and B |
| D. | none |
| Answer» D. none | |
| 760. |
Keeping in view the size of atom which order is correct one ? |
| A. | Mg > Sr |
| B. | Ba > Mg |
| C. | Lu > Ce |
| D. | C1 > I |
| Answer» C. Lu > Ce | |
| 761. |
Keeping in view the size of atom which is in correct order___________________? |
| A. | Mg > Sr |
| B. | Ba > Mg |
| C. | Lu > Ce |
| D. | CI > 1 |
| Answer» C. Lu > Ce | |
| 762. |
Kc value has_______________? |
| A. | No units |
| B. | Units |
| C. | Both A & B |
| D. | None |
| Answer» D. None | |
| 763. |
Ka |
| A. | Very strong base |
| B. | Very weak acid |
| C. | Very strong acid |
| D. | Very strong salt |
| Answer» C. Very strong acid | |
| 764. |
K2Cr2O7/H2SO4 generate____________________? |
| A. | Oxygen |
| B. | Hydrogen |
| C. | Nascent oxygen[O] |
| D. | Nascent hydrogen[H] |
| Answer» D. Nascent hydrogen[H] | |
| 765. |
K2 (Cu(CN)4) which one is correct___________________? |
| A. | Potassium tetra cyano cupperate |
| B. | Co-ordination number is 2 |
| C. | Ligand is positively charged |
| D. | Central atom is present in avionic sphere |
| Answer» E. | |
| 766. |
Isotopes of the same elements has__________________? |
| A. | different number of protons |
| B. | same number of neutrons |
| C. | different number of neutrons |
| D. | same mass number (nucleon number) |
| Answer» D. same mass number (nucleon number) | |
| 767. |
Isotopes differ in_________________? |
| A. | properties which depend upon mass |
| B. | arrangement of electrons in orbitals |
| C. | chemical properties |
| D. | all of the above |
| Answer» B. arrangement of electrons in orbitals | |
| 768. |
Isotopes differs in______________________? |
| A. | arrangement of electrons in orbitals |
| B. | position in the periodic table |
| C. | properties depend upon mass |
| D. | chemical properties |
| Answer» E. | |
| 769. |
Isomerism which is present only in alkene is__________________? |
| A. | structural isomerism |
| B. | metamerism |
| C. | cis-trans isomerism |
| D. | both b and c |
| Answer» D. both b and c | |
| 770. |
Isomorphic substances have _______________? |
| A. | Same physical and chemical properties |
| B. | Same physical and different chemical properties |
| C. | Different physical and same chemical properties |
| D. | Different physical and chemical properties |
| Answer» E. | |
| 771. |
________________ is study about energy of a chemical system ? |
| A. | thermochemistry |
| B. | thermodynamics |
| C. | chemical kinetics |
| D. | stoichiometry |
| Answer» B. thermodynamics | |
| 772. |
Ionization energy in a period generally ___________________? |
| A. | Increases |
| B. | Decreases |
| C. | No change |
| D. | Variable trend |
| Answer» B. Decreases | |
| 773. |
Ionization energy depends upon____________________? |
| A. | Nuclear charge |
| B. | Atomic size |
| C. | Shielding effect |
| D. | I.E depends upon all of the above and nature of orbital |
| Answer» E. | |
| 774. |
Ionic bond is produced after complete transfer of ________________ ? |
| A. | Nucleus |
| B. | Neutrons |
| C. | Electrons |
| D. | Protons |
| Answer» D. Protons | |
| 775. |
Iodoform test can be used to distinguish between_________________? |
| A. | ethanol and methanol |
| B. | acetaldehyde and methanal |
| C. | acetone and diethyl ketone |
| D. | all of the above |
| Answer» E. | |
| 776. |
Iodine is solid due to_________________? |
| A. | Strong covalent bond |
| B. | Large value of dipole moment |
| C. | High polarizability |
| D. | Strong hydrogen bonding |
| Answer» D. Strong hydrogen bonding | |
| 777. |
Introduction of nitro group in a molecule is called___________________? |
| A. | nitration |
| B. | halogenation |
| C. | sulphonation |
| D. | amination |
| Answer» B. halogenation | |
| 778. |
Inner transition elements are called _________________? |
| A. | Lanthanides |
| B. | Actinides |
| C. | Rare earth metals |
| D. | All |
| Answer» E. | |
| 779. |
Industrial materials thermal power stations are coated with__________________? |
| A. | Polyester resins |
| B. | Epoxy paints |
| C. | polyamide resins |
| D. | Polyvinyl chloride |
| Answer» C. polyamide resins | |
| 780. |
Industrial materials and thermal power stations are coated with______________________? |
| A. | Polyester resins |
| B. | Epoxy paints |
| C. | Polyamide resins |
| D. | Polyvinyl chloride |
| Answer» C. Polyamide resins | |
| 781. |
Indicate the correct statement__________________? |
| A. | Cl2 is the strongest oxidizing agent |
| B. | I2 is a volatile solid |
| C. | Br2 is more reactive than Cl2 |
| D. | Cl2 is insoluble in water |
| Answer» C. Br2 is more reactive than Cl2 | |
| 782. |
Increase in atomic number is observed during_________________? |
| A. | Alpha emission |
| B. | Beta emission |
| C. | Both A & B |
| D. | Radioactivity |
| Answer» C. Both A & B | |
| 783. |
Incomplete oxidation of methane in the limited supply of air forms ? |
| A. | CO2 and H2O |
| B. | CH3OH |
| C. | CO + H2 + C |
| D. | CO + H2O + C |
| Answer» C. CO + H2 + C | |
| 784. |
In whole Periodic Table which element Is Most Reducing Agent ? |
| A. | Chlorine |
| B. | lithium |
| C. | Helium |
| D. | Neon |
| Answer» C. Helium | |
| 785. |
In which of the following type of reactions energy of reactant is greater than energy of product________________? |
| A. | endothermic |
| B. | exothermic |
| C. | unpredictable |
| D. | same |
| Answer» C. unpredictable | |
| 786. |
In which of the following pairs are elements belonging to the same group ? |
| A. | Boron & Beryllium |
| B. | Nitrogen & Phosphorous |
| C. | Magnesium & Aluminium |
| D. | Gallium & Helium |
| Answer» C. Magnesium & Aluminium | |
| 787. |
In which of the following layer of atmosphere there is more thickness of ozone layer ? |
| A. | troposphere |
| B. | stratosphere |
| C. | mesosphere |
| D. | photosphere |
| Answer» C. mesosphere | |
| 788. |
In which of the following equilibria will Kc and Kp have the same value ? |
| A. | PCI5 = PCI3 + Cl2 |
| B. | N2 + 3H2 = 2NH |
| C. | 2CO + O2 = CO2 |
| D. | N2 + O2 = 2NO |
| Answer» E. | |
| 789. |
In which compound of Xenon the oxidation state of Xenon is + 6? |
| A. | XeF4 |
| B. | XeOF4 |
| C. | XeOF2 |
| D. | Na4XeO6 |
| Answer» C. XeOF2 | |
| 790. |
In which compound nitrogen has maximum oxidation state____________________? |
| A. | N2O |
| B. | NO2 |
| C. | HNO2 |
| D. | HNO3 |
| Answer» E. | |
| 791. |
In unsaturated hydrocarbons electrons favour___________________? |
| A. | less reactivity |
| B. | addition reactions |
| C. | substitution reactions |
| D. | none |
| Answer» C. substitution reactions | |
| 792. |
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» D. all of the above statements are correct. | |
| 793. |
In the purification of portable water the coagulant used is_________________? |
| A. | alum |
| B. | nickel sulphate |
| C. | copper sulphate |
| D. | barium sulphate |
| Answer» B. nickel sulphate | |
| 794. |
In the production of wrought iron Mg Si and P are removed in the form of___________________? |
| A. | oxides |
| B. | silicates |
| C. | slag |
| D. | carbonates |
| Answer» D. carbonates | |
| 795. |
In the formation of Zwitter ions proton goes from____________________? |
| A. | Carboxyl to amino group |
| B. | Amino to carboxyl group |
| C. | Amino group only |
| D. | Carboxyl group only |
| Answer» B. Amino to carboxyl group | |
| 796. |
In the complex [Cr(OH)3(H2O)3] the coordination number is __________________? |
| A. | 2 |
| B. | 3 |
| C. | 4 |
| D. | 6 |
| Answer» E. | |
| 797. |
In sp3 hybridization the expected geometry of molecules will be__________________? |
| A. | square planar |
| B. | trigonal pyramidal |
| C. | tetrahedral |
| D. | linear |
| Answer» D. linear | |
| 798. |
In solvent extraction ether is used to separate products of organic synthesis from________________? |
| A. | water |
| B. | iodine |
| C. | hydrochloric acid |
| D. | gases |
| Answer» B. iodine | |
| 799. |
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» C. Translational kinetic energy | |
| 800. |
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» E. | |