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.
| 601. |
Rutherford bombarded _________________ particles in discovery of nucleus? |
| A. | Gamma-rays |
| B. | Alpha-rays |
| C. | Beta-rays |
| D. | X-rays |
| Answer» C. Beta-rays | |
| 602. |
Rising of a wetting liquid in a capillary tube is due to__________________? |
| A. | Surface tension |
| B. | Cohesive forces |
| C. | Adhesive forces |
| D. | viscosity |
| Answer» D. viscosity | |
| 603. |
Right half cell contains _____________ electrode? |
| A. | A1 |
| B. | Zn |
| C. | Cu |
| D. | Fe |
| Answer» D. Fe | |
| 604. |
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» D. 2 – 3 years | |
| 605. |
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» B. 20-200 kg | |
| 606. |
Replacement of hydrogen of benzene by alkyl group in the presence of alkyl halide & aluminum chloride is known as__________________? |
| A. | Dows process |
| B. | Friedel & Craft acylation |
| C. | Friedel & Craft alkylation |
| D. | Clemmenson reduction |
| Answer» D. Clemmenson reduction | |
| 607. |
Removal of halogen and hydrogen atom is_________________? |
| A. | halogenation |
| B. | dehalogenation |
| C. | dehydrohalogenation |
| D. | hydrohalogenation |
| Answer» D. hydrohalogenation | |
| 608. |
Removal of CO2 is called_____________________? |
| A. | carboxylation |
| B. | decarboxylation |
| C. | esterification |
| D. | hydroxylation |
| Answer» C. esterification | |
| 609. |
Regular coiling or zigzagging of polypeptide through hydrogen bonding is its_______________? |
| A. | Quantum structure |
| B. | Secondary structure |
| C. | Tertiary structure |
| D. | Primary structure |
| Answer» C. Tertiary structure | |
| 610. |
Regular coiling or zigzagging of polypeptide through hydrogen bonding is its___________________? |
| A. | Quantum structure |
| B. | Secondary structure |
| C. | Tertiary structure |
| D. | Primary structure |
| Answer» C. Tertiary structure | |
| 611. |
Reading of a Barometer going down is an indication of:___________? |
| A. | Snow |
| B. | Storm |
| C. | Intense heat |
| D. | Rainfall |
| Answer» E. | |
| 612. |
Reactivity due to pi-electrons is present in_________________? |
| A. | alkane |
| B. | alkene |
| C. | alkyne |
| D. | both B & C |
| Answer» E. | |
| 613. |
Reaction which proceeds in both directions is called_______________? |
| A. | reversible |
| B. | irreversible |
| C. | spontaneous |
| D. | non-spontaneous |
| Answer» B. irreversible | |
| 614. |
Reaction at anode is called________________? |
| A. | oxidation |
| B. | reduction |
| C. | redox |
| D. | decomposition |
| Answer» B. reduction | |
| 615. |
Reaction in which heat evolves is called ____________________? |
| A. | endothermic |
| B. | spontaneous |
| C. | non-spontaneous |
| D. | exothermic |
| Answer» E. | |
| 616. |
Reacting bromine with benzene in the presence of sunlight will result in_______________? |
| A. | The rupturing of benzene ring |
| B. | Substitution reaction |
| C. | Addition reaction |
| D. | No-reaction |
| Answer» D. No-reaction | |
| 617. |
Ratio of the amount of solute in organic and aqueous solvent is________________? |
| A. | Retardation factor |
| B. | Distribution co-efficient |
| C. | Distribution in aqueous solution |
| D. | All statements are wrong |
| Answer» C. Distribution in aqueous solution | |
| 618. |
Rate of reactions of most organic compounds are____________________? |
| A. | very slow |
| B. | very fast |
| C. | slow |
| D. | no regular character present |
| Answer» D. no regular character present | |
| 619. |
Rate of reaction when concentration of reactants are taken as unity is called_________________? |
| A. | Arrhenius constant |
| B. | Molecularity |
| C. | Specific rate constant |
| D. | Ideal rate constant |
| Answer» D. Ideal rate constant | |
| 620. |
Rate of filtration can be increased by applying gentle suction______________? |
| A. | Gooch crucible |
| B. | Filter paper |
| C. | Sintered crucible |
| D. | All of the above |
| Answer» C. Sintered crucible | |
| 621. |
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 | |
| 622. |
Rate of disappearance of reactant is equal to_________________? |
| A. | Rate of reaction |
| B. | Rate of formation of product |
| C. | Energy released during reaction |
| D. | A and B |
| Answer» B. Rate of formation of product | |
| 623. |
Rate expression for ammonia synthesis is___________________? |
| A. | Kc=x2/(a-x)(b-x) |
| B. | Kc=x2/v(a-x) |
| C. | Kc=4×2/(a-2x)2(b-x) |
| D. | Kc=4x2v2/(a-x)(b-3x)3 |
| Answer» E. | |
| 624. |
Raney nickel is prepared from ______________________ by treating with caustic soda? |
| A. | Ni-Cu alloy |
| B. | Ni-Fe alloy |
| C. | Ni-Al alloy |
| D. | Ni-Mg alloy |
| Answer» D. Ni-Mg alloy | |
| 625. |
Radiations are harmful as it:___________? |
| A. | Causes skin cancer |
| B. | Causes anemia |
| C. | Alters body tissue |
| D. | is unstable |
| Answer» B. Causes anemia | |
| 626. |
Radiations are absorbed in_______________? |
| A. | Spectrophotometer method |
| B. | Dilatometric method |
| C. | Optical relation method |
| D. | Refractometric method |
| Answer» B. Dilatometric method | |
| 627. |
R-Mg-Br is called___________________? |
| A. | Grignard reagent |
| B. | Metallic alkyl halide |
| C. | Both A & B |
| D. | Alkyl |
| Answer» D. Alkyl | |
| 628. |
Quantum numbers are __________ ? |
| A. | Arithmetical values |
| B. | Numerical values |
| C. | Leometric values |
| D. | Logical values |
| Answer» C. Leometric values | |
| 629. |
Quantum number which tells the energy of electron is________________? |
| A. | n |
| B. | 1 |
| C. | m |
| D. | s |
| Answer» B. 1 | |
| 630. |
Quantum number values for 3p orbitals are____________________? |
| A. | n=3 l=2 |
| B. | n=3 l=0 |
| C. | n=3 l=1 |
| D. | n=3 l=3 |
| Answer» D. n=3 l=3 | |
| 631. |
Qualitative analysis is carried out for _________________? |
| A. | identification of elements |
| B. | estimation of amounts of elements |
| C. | molar ration of elements |
| D. | molar volume of elements |
| Answer» B. estimation of amounts of elements | |
| 632. |
Purines and pyrimidines are__________________? |
| A. | Enzymes |
| B. | Nitrogenous bases |
| C. | Carbohydrates |
| D. | Lipids |
| Answer» C. Carbohydrates | |
| 633. |
Purines and pyrimidines are_________________? |
| A. | Enzymes |
| B. | Nitrogenous bases |
| C. | Carbohydrates |
| D. | Lipids |
| Answer» C. Carbohydrates | |
| 634. |
Pure metal__________________? |
| A. | corrode slowly |
| B. | corrode rapidly |
| C. | does not corrode easily |
| D. | none of these |
| Answer» D. none of these | |
| 635. |
Pumping of water uphill is_______________? |
| A. | spontaneous process |
| B. | non-spontaneous process |
| C. | irreversible process |
| D. | reversible process |
| Answer» C. irreversible process | |
| 636. |
Protein attached to some non protein group is called____________________? |
| A. | Derived protein |
| B. | Sample protein |
| C. | Proteoses |
| D. | Conjugated protein |
| Answer» E. | |
| 637. |
Propene can exhibit________________? |
| A. | cis-trans isomerism |
| B. | geometric isomerism |
| C. | both a & b |
| D. | none of the above |
| Answer» E. | |
| 638. |
Product of charge and distance is called__________________? |
| A. | Pressure |
| B. | Bond length |
| C. | Work |
| D. | Dipole moment |
| Answer» E. | |
| 639. |
Process used to separate insoluble particles from liquids is ___________ ? |
| A. | Drying |
| B. | Filtration |
| C. | Sieving |
| D. | Extraction |
| Answer» C. Sieving | |
| 640. |
Pressure remain constant, at which temperature the volume of gas becomes twice of what it is at 0°C? |
| A. | 546 °C |
| B. | 546 K |
| C. | 200°C |
| D. | 273 K |
| Answer» C. 200°C | |
| 641. |
Pressure in gas discharge tube was kept________________? |
| A. | 10 torr |
| B. | 1 torr |
| C. | 0.1 torr |
| D. | 0.01 torr |
| Answer» E. | |
| 642. |
Presence of nitrogen in organic compounds is tested as__________? |
| A. | Nitrogen gas |
| B. | NH3 |
| C. | CN‾ |
| D. | NO |
| Answer» D. NO | |
| 643. |
Preparation of vegetable ghee involves_________________? |
| A. | halogenation |
| B. | hydroxylation |
| C. | hydrogenation |
| D. | hydration |
| Answer» D. hydration | |
| 644. |
ppm means________________? |
| A. | parts of solute in 1000 parts of solvent |
| B. | parts of solvent in 1000 parts of solute |
| C. | parts of solute in one million parts of solution |
| D. | parts of solvent in one million parts of solute |
| Answer» D. parts of solvent in one million parts of solute | |
| 645. |
Potential of SHE is considered as__________________? |
| A. | zero |
| B. | unity |
| C. | constant |
| D. | multiple of 1 |
| Answer» B. unity | |
| 646. |
Potassium Permanganate is used for purifying drinking water, because_________? |
| A. | It is a sterilising agent. |
| B. | It dissolves the impurities of water. |
| C. | It is a reducing agent. |
| D. | It is an oxidising agent. |
| Answer» E. | |
| 647. |
Positive rays give flash on________________? |
| A. | AgNO3 plate |
| B. | AgCl plate |
| C. | ZnO |
| D. | ZnS |
| Answer» E. | |
| 648. |
Positive rays are produced__________________? |
| A. | By burning of gas |
| B. | By cooling of the gas |
| C. | By the bombardment of cathode rays on gas molecules |
| D. | From anode like cathode rays produced from cathode |
| Answer» D. From anode like cathode rays produced from cathode | |
| 649. |
Polymers described as large molecules built up from small repeating units called________________? |
| A. | Biopolymers |
| B. | Dimers |
| C. | Monomers |
| D. | metamers |
| Answer» D. metamers | |
| 650. |
Polyethylene Glycols are used in the preparation of which type of detergents? |
| A. | Cationic detergents |
| B. | Anionic detergents |
| C. | Non-ionic detergents soap |
| D. | All of above |
| Answer» D. All of above | |