MCQOPTIONS
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MCQOPTIONS
This section includes 1262 Mcqs, each offering curated multiple-choice questions to sharpen your Chemistry Mcqs knowledge and support exam preparation. Choose a topic below to get started.
| 901. |
Which of the following is true in the case of Zn-Cu cell ? |
| A. | The flow of electrons takes place from copper to zinc |
| B. | E0red of copper electrode is less than that of zinc electrode |
| C. | Zinc acts as an anode and copper as cathode |
| D. | All are correct |
| Answer» D. All are correct | |
| 902. |
Secondary cell is_____________________? |
| A. | rechargeable |
| B. | non rechargeable |
| C. | electrolytic cell |
| D. | Daniel cell |
| Answer» B. non rechargeable | |
| 903. |
Reaction at anode is called________________? |
| A. | oxidation |
| B. | reduction |
| C. | redox |
| D. | decomposition |
| Answer» B. reduction | |
| 904. |
In electrolytic solution conductance of electricity is due to _____________________? |
| A. | free electrons |
| B. | ions |
| C. | metals |
| D. | electrodes |
| Answer» C. metals | |
| 905. |
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. | |
| 906. |
In alkaline battery the anode is made up of______________________? |
| A. | MnO2 |
| B. | Zn |
| C. | AgO2 |
| D. | cadmium |
| Answer» C. AgO2 | |
| 907. |
Decrease in oxidation number is called__________________? |
| A. | oxidation |
| B. | reduction |
| C. | oxidation-reduction |
| D. | all of above represent same entity |
| Answer» C. oxidation-reduction | |
| 908. |
The leements in which d or f orbitals are in the process of completion are__________________? |
| A. | outer transition elements |
| B. | inner transition elements |
| C. | typical transition elements |
| D. | transition elements |
| Answer» E. | |
| 909. |
Purines and pyrimidines are__________________? |
| A. | Enzymes |
| B. | Nitrogenous bases |
| C. | Carbohydrates |
| D. | Lipids |
| Answer» C. Carbohydrates | |
| 910. |
In complex compounds the oxidation number is written in___________________? |
| A. | English |
| B. | Greek |
| C. | Roman numeral |
| D. | Hebrew |
| Answer» D. Hebrew | |
| 911. |
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 | |
| 912. |
Pure metal__________________? |
| A. | corrode slowly |
| B. | corrode rapidly |
| C. | does not corrode easily |
| D. | none of these |
| Answer» D. none of these | |
| 913. |
The melting points and boiling points upto meddle of 3d- series ____________________? |
| A. | increases |
| B. | decreases |
| C. | remain same |
| D. | no regular trend |
| Answer» B. decreases | |
| 914. |
The correct electronic configuration of Cr is____________________? |
| A. | [Ar]4s23d4 |
| B. | [Ar] 4s23d4 |
| C. | [Ar]4s03d5 |
| D. | [Ar]4s13d5 |
| Answer» E. | |
| 915. |
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 | |
| 916. |
Which is sold as fertilizer ___________________? |
| A. | CaSiO3 |
| B. | Na2SiO3 |
| C. | Ca3(PO4)2 |
| D. | MnSiO3 |
| Answer» D. MnSiO3 | |
| 917. |
In pig iron the concentration of C-atom is ___________________? |
| A. | 0.12 — 0.25% |
| B. | 2.5 — 4.5% |
| C. | 2.0 — 4.0% |
| D. | 0.25 — 2.5% |
| Answer» C. 2.0 — 4.0% | |
| 918. |
With impurities like P and S the open hearth furnace is lined with ? |
| A. | SiO2 |
| B. | Fe2O3 |
| C. | FeO |
| D. | CaO MgO |
| Answer» E. | |
| 919. |
When an active metal like Al comes in contact with less active element like Cu then it produces__________________? |
| A. | dry cell |
| B. | galvanic cell |
| C. | electrolytic cell |
| D. | A and B |
| Answer» C. electrolytic cell | |
| 920. |
The central atom along with ligands is called____________________? |
| A. | complex ion |
| B. | coordination sphere |
| C. | ligand |
| D. | complex compound |
| Answer» C. ligand | |
| 921. |
When the central atom of coordination compound is sp3d2 hybridization the expected geometry will be___________________? |
| A. | tetrahedral |
| B. | square planar |
| C. | trigonal bipyramidal |
| D. | octahedral |
| Answer» E. | |
| 922. |
Polymers described as large molecules built up from small repeating units called________________? |
| A. | Biopolymers |
| B. | Dimers |
| C. | Monomers |
| D. | metamers |
| Answer» D. metamers | |
| 923. |
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 | |
| 924. |
The important monomers of acryclic resins is__________________? |
| A. | Vinyl chloride |
| B. | Styrene |
| C. | Methylmethacrylate |
| D. | Hexamethylenediamine |
| Answer» D. Hexamethylenediamine | |
| 925. |
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 | |
| 926. |
The process of polymerization was classified by___________________? |
| A. | Strecker |
| B. | Sabatier |
| C. | Runge |
| D. | W. H. Carothers |
| Answer» E. | |
| 927. |
Common example of carbohydrates are__________________? |
| A. | Cellulose glycogen galactose |
| B. | Glyceraldehydes glucose peptone |
| C. | Glycerol phospho lipids collagen |
| D. | Legumin amylopectin albumin |
| Answer» B. Glyceraldehydes glucose peptone | |
| 928. |
Triglycerides are easily hydrolyzed by enzymes called_________________? |
| A. | Lyases |
| B. | Ligases |
| C. | Lipases |
| D. | Hydrolases |
| Answer» D. Hydrolases | |
| 929. |
Protein attached to some non protein group is called____________________? |
| A. | Derived protein |
| B. | Sample protein |
| C. | Proteoses |
| D. | Conjugated protein |
| Answer» E. | |
| 930. |
Enzyme proved useful in cancer treatment is_______________? |
| A. | Lactic dehydrogenase |
| B. | Alkaline phosphatase |
| C. | L-asparaginase |
| D. | Cellulase |
| Answer» D. Cellulase | |
| 931. |
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» D. Isomerases | |
| 932. |
Nucleic acids were first demonstrated in_________________? |
| A. | Pus cells |
| B. | Sperm heads |
| C. | 1872 |
| D. | all of the above |
| Answer» B. Sperm heads | |
| 933. |
The nitrogenous base different in RNA as compared to DNA is_________________? |
| A. | Cytosine |
| B. | Thymine |
| C. | Adenine |
| D. | Guanine |
| Answer» C. Adenine | |
| 934. |
Polyester resins are the product of the reaction of__________________? |
| A. | Dihydric alcohol and dicarboxylic aromatic acids |
| B. | Polyamines with aliphatic dicarboxylic acids |
| C. | Styrene in the presence of catalyst |
| D. | Epichlorohydrin with diphenylol propane |
| Answer» B. Polyamines with aliphatic dicarboxylic acids | |
| 935. |
The mechanism by which the genetic information can be duplicated is called_________________? |
| A. | Duplication |
| B. | Transcription |
| C. | Replication |
| D. | Mutation |
| Answer» D. Mutation | |
| 936. |
A polymer in which three different monomers combine called_____________? |
| A. | Copolymer |
| B. | Terpolymer |
| C. | Homopolymer |
| D. | Biopolymer |
| Answer» C. Homopolymer | |
| 937. |
Enzynies that catalyze the transfer of groups within molecule are called_________________? |
| A. | Isomerases |
| B. | Lyases |
| C. | Transferases |
| D. | Ligases |
| Answer» B. Lyases | |
| 938. |
Orgosterol is__________________? |
| A. | Orgocalciferol |
| B. | Vitamin D2 |
| C. | Sterol |
| D. | all of the above |
| Answer» D. all of the above | |
| 939. |
Animal fats are located particularly in__________________? |
| A. | Skeleton tissues |
| B. | Cardiac tissues |
| C. | Connective tissues |
| D. | Adipose tissues |
| Answer» E. | |
| 940. |
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 | |
| 941. |
Rate of enzymatic reaction is directly proportional to the concentration of___________________? |
| A. | Enzyme |
| B. | Substrate |
| C. | Enzyme and substrate |
| D. | Enzyme and product |
| Answer» C. Enzyme and substrate | |
| 942. |
For 3rd order reaction the hhalf life is inversely proportional to initial concentration of reactants__________________? |
| A. | Single |
| B. | Square |
| C. | Cube |
| D. | Raise to power four |
| Answer» C. Cube | |
| 943. |
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» B. 25% lime stone and 75% clay | |
| 944. |
Nucleic acids direct the synthesis of__________________? |
| A. | Glucose |
| B. | Triglycerides |
| C. | Proteins |
| D. | All |
| Answer» D. All | |
| 945. |
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» B. compound | |
| 946. |
How many zones through which the charge passes in a rotary kiln ? |
| A. | 4 |
| B. | 3 |
| C. | 2 |
| D. | 5 |
| Answer» B. 3 | |
| 947. |
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» E. | |
| 948. |
The cooling of molten urea by air in the tower is called______________________? |
| A. | prilling |
| B. | evaporation |
| C. | condensation |
| D. | crystallization |
| Answer» B. evaporation | |
| 949. |
Addition of urea to the soil is ____________ reaction? |
| A. | endothermic |
| B. | exothermic |
| C. | both a and b |
| D. | no heat energy is involved |
| Answer» C. both a and b | |
| 950. |
DAP (Diammonium hydrogen phosphate) contains ______________ plant nutrients? |
| A. | 60% |
| B. | 65% |
| C. | 70% |
| D. | 75% |
| Answer» E. | |