chemistry Mcqs
601. The gases become non-ideal at ________________?
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A. High temperature and low pressure

B. Low temperature and low pressure

C. High temperature and high pressure

D. Low temperature and high pressure
603. Polyester resins are the product of the reaction of__________________?
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A. Dihydric alcohol and dicarboxylic aromatic acids

B. Epichlorohydrin with diphenylol propane

C. Polyamines with aliphatic dicarboxylic acids

D. Styrene in the presence of catalyst

604. Rate of disappearance of reactant is equal to_________________?
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A. A and B

B. Rate of reaction

C. Rate of formation of product

D. Energy released during reaction

606. Nylon is obtained by heating___________________?
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A. Epichlorohydrin

B. Acrylic acid

C. Vinyl chloride

D. Adipic acid with hexamethylene diamine
609. The compound or complex ion which has a ring in its structure__________________?
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A. hydrate

B. monodentate ligand

C. chelate

D. polydentate ligand

610. Boiling point elevations can be measured by__________________?
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A. Landsbergers method

B. none of the above

C. Linds method

D. Beckmanns method

611. Which of the following is not a secondary pollutant_________________?
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A. sulphuric acid

B. ozone

C. carbon dioxide

D. carbonic acid

613. Apparent charge on atom in molecule is___________________?
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A. oxidation number

B. valency

C. coordination number

D. charge number

614. Voltaic cell can be recharged by______________?
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A. by heating it

B. by removal of solution

C. by replacing external circuit with external source of electricity

D. by addition of fresh solution

615. The relative lowering of vapour pressure is_____________________?
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A. equal to the mole fraction of solvent

B. equal to the mole fraction of solute

C. directly proportional to the mole fraction of solute

D. both B & C
616. The degree of dissociation of week electrolyte increases as________________?
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A. None

B. Dilution decreases

C. Pressure increases

D. Dilution increases
617. Pollutants have adverse effect over_________________?
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A. Biosphere

B. Ecosystem

C. Both a & b

D. Hydrosphere

618. The rate of reaction___________________?
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A. Remains the same as the reaction proceeds

B. May decrease or increase as the reaction proceeds

C. Increases as the reaction proceeds

D. Decreases as the reaction proceeds
621. Lipopolysaccharides are examples of________________?
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A. Compound lipids

B. Not a type of lipids

C. Simple lipids

D. Derived lipids

624. Lead accumulators are_______________?
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A. secondary cell

B. primary cell

C. voltaic cell

D. both A & C
626. Biocatalytical proteins are_________________?
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A. Lipids

B. Enzymes

C. Substrate

D. any of above

629. The solution which distils over with change in composition________________?
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A. ideal solution

B. zeotropic solution

C. azeotropic solution

D. non-ideal solution

631. The species which donate two electron pairs in a coordination compound is called__________________?
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A. ligand

B. poly-dentate ligand

C. bi-dentate ligand

D. mono-dentate ligand

636. Carbohydrates are polyhydroxy compounds of___________________?
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A. Glucose

B. Glyceraldehydes

C. Aldehydes and ketones

D. Oligosaccharides

637. Regular coiling or zigzagging of polypeptide through hydrogen bonding is its_______________?
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A. Quantum structure

B. Tertiary structure

C. Secondary structure

D. Primary structure

638. Which statement is incorrect about catalyst___________________?
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A. it affects specific rate constant

B. decrease activation energy

C. specific in action

D. it is used in smaller amount

640. Which of the following is true in the case of Zn-Cu cell ?
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A. All are correct

B. E0red of copper electrode is less than that of zinc electrode

C. Zinc acts as an anode and copper as cathode

D. The flow of electrons takes place from copper to zinc

641. The nutrients which are required in very small amount for the normal growth of plants are called_________________?
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A. micronutrients

B. phosphorus fertilizer

C. all of the above

D. nitrogenous fertilizers

642. The important function of burning zone in the rotary kilm is __________________?
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A. to dry the moisture of slurry

B. to reduce the impurities

C. combination of different oxides like CaO SiO2 Fe2O3 and Al2O3

D. to decompose lime stone to unslaked lime

643. Addition of CH3COOH and CH3COONa gives in water_______________?
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A. Standard solution

B. buffer solution

C. acidic buffer solution

D. both B & C
644. If the volume of solution is equal to sum of volumes of its all components then the solution_____________?
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A. will be an ideal solution

B. will be non-ideal solution

C. will show deviations from Raoults law

D. both b & c

646. The value of activation energy is primarily determined by_______________?
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A. Chemical nature of reactants and products

B. Effective collision

C. Temperature

D. Concentration of reactants

648. Which has the minimum freezing point ?
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A. One Molal NaCI

B. One molal KCI solution

C. One molal urea solution

D. One molal CaCI2
650. Kc value has_______________?
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A. No units

B. Units

C. Both A & B

D. None