chemistry Mcqs
501. Nucleic acids direct the synthesis of__________________?
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A. Proteins

B. Triglycerides

C. All

D. Glucose

502. Calcarious material includes_________________?
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A. chalk

B. lime stone

C. all of the above

D. marble

506. By decreasing the pressure the reaction will go to that direction where_________________?
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A. volume increased

B. heat absorbed

C. volume is decreased

D. no. of moles of specie decreased

508. Which one of the following fertilizers provides the nitrogen and phosphorus to the plant ?
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A. potassium nitrate

B. calcium superphosphate

C. urea

D. diammonium phosphate
509. Orgosterol is__________________?
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A. Sterol

B. all of the above

C. Orgocalciferol

D. Vitamin D2

510. For the measurement of standard electrode potential Zn is dipped in________________?
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A. 0.1 M ZnSO4 solution

B. 1 M ZnSO4 solution

C. 1 M ZnO solution

D. 1.5 M ZnSO4 solution

511. Hydration is a process in which_________________?
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A. Molecules are surrounded by solvent molecules

B. Ions are surrounded by solvent molecules

C. Both ions and molecules are surrounded by solvent molecules

D. Both ions and molecules are surrounded by water molecules
513. Hydrolysis of an oligosaccharide in the presence of acid yields________________?
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A. 2-9 monosaccharide unit

B. many monosaccharide

C. No monosaccharide unit

D. one monosaccharide unit

515. The fertility of the soil is improved by________________?
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A. Adding manure and growing legumes

B. All

C. Adding lime to the acid salts

D. Rotation of the crops

516. Non-stoichiometric compounds of transition elements are called___________________?
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A. hydrides

B. binary compounds

C. interstitial compounds

D. hydrates

520. Number of moles in 1 kg of solvent is called_________________?
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A. molarity

B. molality

C. normality

D. mole fraction

522. When common salt is dissolved in water ?
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A. Boiling point of water increase

B. Boiling point of water remains same

C. Boiling point of water decrease

D. None of the above

523. Geometry of the complex compounds usually depends upon __________________?
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A. hybridization of central metal

B. type of ligands

C. types of hybridization in the elements of ligands

D. All of above

524. Molten NaCl conducts electricity due to the presence of_______________?
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A. Free molecules

B. Atoms of Na and Cl

C. Free ions

D. Free electrons

525. Which of the following will not change the concentration of ammonia at the equilibrium ?
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A. Increase of volume

B. Addition of catalyst

C. Increase of pressure

D. Decrease of temperature

526. Voltaic cell is a_________________?
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A. alkaline cell

B. reversible cell

C. all of the above

D. irreversible cell

527. Which of the following will have very high rate of reaction ?
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A. Ionic reactions

B. all of above

C. Double decomposition reaction

D. Neutralization reaction

528. What is clinker ?
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A. roasted argillaceous material

B. roasted gypsum

C. roasted calcareous and argillaceous material

D. roasted calcareous material

530. In the purification of portable water the coagulant used is_________________?
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A. copper sulphate

B. barium sulphate

C. nickel sulphate

D. alum
532. E0red of an element cab be calculated by comparing it with _____________________?
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A. 2M solution of HCI

B. 1M solution of ions of respective element

C. SHE

D. New electrode of same element

534. AgCl dissolved with conc (210-2) Ksp will be__________________?
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A. 4 x 10-4

B. 3.6 x 10-5

C. 3.6 x 10-6

D. 7.2 x 10-6

535. Spontaneous reactions are_______________?
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A. not natural

B. Fast

C. Slow

D. Moderate

536. Common example of carbohydrates are__________________?
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A. Legumin amylopectin albumin

B. Glycerol phospho lipids collagen

C. Glyceraldehydes glucose peptone

D. Cellulose glycogen galactose
537. Which of the following solutions of H2SO4 is more concentrated ?
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A. 1 normal solution

B. all have same concentration

C. 1 molal solution

D. 1 Molar solution
539. The addition of a catalyst to the reaction system__________________?
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A. Increases the rate of forward as well as backward reaction equally

B. Increases the rate of forward reaction only

C. Increases the rate of forward but decreases the rate of backward reaction

D. Increases the rate of reverse reaction

540. Greater value of standard reduction potential greater will be tendency__________________?
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A. to get oxidized

B. to get reduced

C. to accept electrons

D. both B and C
541. Water of crystallization can be removed by________________?
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A. All of the above

B. drying

C. heating

D. evaporation

543. Which sequence of steps is correct for the manufacture of cement ?
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A. crushing grinding mixing heating

B. mixing heating grinding crushing

C. crushing heating mixing grinding

D. crushing mixing heating grinding and mixing

545. Electricity in voltaic cell is produced due to_________________?
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A. neutralization

B. oxidation

C. reduction

D. both B & C
546. Solution of Na2SO4 will be_________________?
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A. neutral

B. cannot be presicted without data

C. basic

D. acidic

547. In partially miscible liquids the two layers are___________________?
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A. saturated solutions of each liquid

B. no layer formation takes place

C. unsaturated solutions of each liquid

D. normal solution of each liquid

549. In Galvanic cell electrons flow from anode to cathode through__________________?
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A. salt bridge

B. movement of ions

C. all of the above

D. external electric circuit
550. An enzyme has its specificity due to________________?
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A. Temperature

B. Pressure

C. Substrate

D. Structure