chemistry MCQs – Page 29

Practise multiple-choice questions from chemistry for competitive examinations and subject revision. Review each marked answer and report any item that may be outdated or unclear.

chemistry Mcqs
561. Which one of the following salt does not hydrolyzed________________?
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A. AlCl3

B. NH4Cl

C. CuSO4

D. Na2SO4
562. Nucleic acids were first demonstrated in_________________?
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A. Pus cells

B. all of the above

C. Sperm heads

D. 1872

563. List of elements based on hydrogen scale is called________________?
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A. electrochemical series

B. periods

C. groups

D. periodic table

564. Solubility of any salt can be determined from_______________?
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A. Ka

B. Ksp

C. Kc

D. Kb

565. Idea of pH and pOH was put forward by________________?
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A. Sorenson

B. Chadwick

C. Gibbs

D. Einstein

566. When catalysts and reactants are in more than one phase it is________________?
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A. Catalysis

B. Ea

C. Homogeneous catalysis

D. Heterogeneous catalysis
567. DAP (Diammonium hydrogen phosphate) contains ______________ plant nutrients?
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A. 75%

B. 60%

C. 70%

D. 65%

568. If a buffer solution of higher pH than seven is to be made we use___________________?
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A. Weak acid and its salt with strong base

B. Weak acid and strong base

C. Strong acid and strong base

D. Weak acid and strong base

569. Who made volume and pressure correction to explain deviation of gases from ideal behaviour ?
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A. Charles

B. Boltzman

C. Vander waal

D. Clausius

570. Electrode potential of Zn is__________________?
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A. depends on the nature of the coupled electrode

B. oxidation

C. oxidation-reduction

D. reduction

571. A polymer in which three different monomers combine called_____________?
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A. Terpolymer

B. Copolymer

C. Homopolymer

D. Biopolymer

572. Stronger the oxidizing agent greater is the________________?
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A. Reduction potential

B. Oxidation potential

C. Redox potential

D. emf of cell

573. Three elements needed for the healthy growth of plants are_________________?
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A. N P K

B. N K C

C. N Ca P

D. N S P

574. Industrial materials and thermal power stations are coated with______________________?
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A. Polyamide resins

B. Polyester resins

C. Epoxy paints

D. Polyvinyl chloride

575. In alkaline battery the anode is made up of______________________?
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A. MnO2

B. Zn

C. AgO2

D. cadmium

576. Right half cell contains _____________ electrode?
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A. A1

B. Fe

C. Zn

D. Cu
577. Enzyme proved useful in cancer treatment is_______________?
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A. Cellulase

B. Alkaline phosphatase

C. L-asparaginase

D. Lactic dehydrogenase

578. For 3rd order reaction the hhalf life is inversely proportional to initial concentration of reactants__________________?
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A. Single

B. Square

C. Cube

D. Raise to power four

579. The central atom along with ligands is called____________________?
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A. ligand

B. coordination sphere

C. complex compound

D. complex ion

580. Catalyst used to speed up the reaction of ammonia synthesis is________________________?
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A. Fe

B. V2O5

C. V2O5 and Pt

D. Pieces of Fe crystals are embedded in fused mixture of MgO Al2O3 and SiO2