|
1) Which of the following fertilizers is not useful for paddy rice ? a. urea b. DAP c. Ammonium sulphate d. Ammonium nitrate
|
||||
|
2) Which of the following potassium fertilizers are more useful for horticultural crops tobacco & potatoes ? a. KCI b. KNO3 c. K2SO4 d. KMnO4
|
||||
|
3) Argillaceous material does not include________________? a. vlay b. marine shells c. slate d. blast furnace slag
|
||||
|
4) The nutrients which are required in very small amount for the normal growth of plants are called_________________? a. nitrogenous fertilizers b. micronutrients c. phosphorus fertilizer d. all of the above
|
||||
|
5) Which one of the following is an inorganic fertilizer ? a. manure b. urea c. ammonium nitrate d. All
|
||||
|
6) The potassium present in plant help the plant to___________________? a. form starch sugar and fibrous material b. ripen the seeds and fruits c. increase the resistance against disease d. all the above statements are correct
|
||||
|
7) What is clinker ? a. roasted calcareous material b. roasted argillaceous material c. roasted calcareous and argillaceous material d. roasted gypsum
|
||||
|
8) Phosphorus helps in the growth of_________________? a. root b. leave c. stem d. seed
|
||||
|
9) Which one of the following raw material is not present in the cement ? a. lime stone b. gypsum c. KNO3 d. iron oxide
|
||||
|
10) The sequence of zones in the rotary kiln are as____________________? a. dry zone burning zone decomposition zone cooling zone b. cooling zone burning zone decomposition zone dry zone c. burning zone cooling zone decomposition zone d. dry zone decomposition zone burning zone cooling zone
|
||||
|
11) The rate of reaction___________________? a. Increases as the reaction proceeds b. Decreases as the reaction proceeds c. Remains the same as the reaction proceeds d. May decrease or increase as the reaction proceeds
|
||||
|
12) The specific rate constant of a first order reaction depends on the________________? a. Time b. Concentration of the reactant c. Temperature d. Concentration of the product
|
||||
|
13) The value of activation energy is primarily determined by_______________? a. Temperature b. Effective collision c. Concentration of reactants d. Chemical nature of reactants and products
|
||||
|
14) Spontaneous reactions are_______________? a. Moderate b. Slow c. Fast d. not natural
|
||||
|
15) Unit of rate of reaction is_________________? a. Moles dm-3 sec-1 b. Moles dm-3 c. Moles sec-1 d. Mol-1 dm3 sec-1
|
||||
|
16) 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
|
||||
|
17) 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
|
||||
|
18) Radiations are absorbed in_______________? a. Spectrophotometer method b. Dilatometric method c. Optical relation method d. Refractometric method
|
||||
|
19) Energy of reactant higher than energy of product favours A. Endothermic_______________? a. Exothermic b. Moderate reaction c. No reaction d. None of these
|
||||
|
20) Which of the following will have very high rate of reaction ? a. Double decomposition reaction b. Neutralization reaction c. Ionic reactions d. all of above
|
||||
|
21) Anything which increases rate of reaction without being involved in the reaction________________? a. Promoter b. Catalyst c. Inhibitor d. All of the above
|
||||
|
22) When catalysts and reactants are in more than one phase it is________________? a. Homogeneous catalysis b. Heterogeneous catalysis c. Catalysis d. Ea
|
||||
|
23) Biocatalytical proteins are_________________? a. Enzymes b. Substrate c. Lipids d. any of above
|
||||
|
24) An enzyme has its specificity due to________________? a. Substrate b. Structure c. Temperature d. Pressure
|
||||
|
25) A substance which increases the reactivity of enzyme is called_________________? a. Promoters b. Inhibitors c. Stimulators d. Non-activators
|
||||
|
26) When the reaction completes in more than one steps rate of reaction will be determined by________________? a. Fast step b. Slowest step c. All steps d. Molecularity of the reaction
|
||||
|
27) Energy of activation for backward reaction is less than forward reaction for ___________ reactio? a. Endothermic b. Exothermic c. Moderate d. Fast
|
||||
|
28) Which statement is incorrect about catalyst___________________? a. it is used in smaller amount b. decrease activation energy c. specific in action d. it affects specific rate constant
|
||||
|
29) Which of the following type of reaction is 3rd order reaction_________________? a. 2N2O5 = 2N2O4 + O3 b. NO + O3 ? NO2 + O2 c. 2FeCl3 + 6KI ? 2FeI2 + 6KCl + I2 d. None of these
|
||||
|
30) The addition of a catalyst to the reaction system__________________? a. Increases the rate of forward reaction only b. Increases the rate of reverse reaction c. Increases the rate of forward but decreases the rate of backward reaction d. Increases the rate of forward as well as backward reaction equally
|
||||
|
31) On increasing the temperature the rate of reaction increases mainly because_________________? a. The activation energy of the reaction increases b. Concentration of the reacting molecules increases c. Collision frequency increases d. None of these
|
||||
|
32) Sum of exponents of molar concentration is called___________________? a. Order of reaction b. Molecularity c. Rate of reaction d. Average of reaction
|
||||
|
33) In rate expression the concentration of reactants is negative. It shows_______________? a. Concentration of reactant does not change b. Concentration of product increases c. Concentration of reactant decreases d. Concentration of reactant increases
|
||||
|
34) When a graph is plotted between 1/T on X-axis and log k on y-axis a straight line is obtained with a negative slope which has two end in__________________? a. I and II quadrant b. II and III quadrant c. III and IV quadrant d. II and IV quadrant
|
||||
|
35) 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
|
||||
|
36) Which order of reaction obeys the relation t1/2 = 1/Ka____________________? a. First order b. Second order c. Third order d. Zero order
|
||||
|
37) Activated complex is formed due to________________? a. Pressure b. Effective collision c. Ineffective collisions d. Temperature
|
||||
|
38) Energy required to form transition state is called _________________? a. Ea b. P.E c. V d. K.E
|
||||
|
39) Greater the conc. Of reactant__________________? a. Greater will be dx/dt b. Lesser will be dx/dt c. dx/dt will be moderate d. any of above
|
||||
|
40) The substances that reduces the effectiveness of a catalyst are called ___________________? a. Promoters b. Poisoning catalysts c. Inhibitors d. pro-catalysts
|
||||
|
41) Each catalyst has_________________? a. Specificity b. Special structure c. Its own Ea d. all of above
|
||||
|
42) A catalyst can not effect__________________? a. Products b. Chemical equilibrium c. Reactants d. both A & B
|
||||
|
43) Co-enzymes are_________________? a. Non proteineous b. Proteineous c. sugars d. lipids
|
||||
|
44) End name of enzyme is___________________? a. yl b. ase c. one d. al
|
||||
|
45) For determining the order of reaction we use__________________? a. Refractometric method b. Dilatometric method c. Optical activity method d. Half life method
|
||||
|
46) Elements in the same vertical group of the periodic table have same_______________? a. Number of valence electrons b. Atomic number c. Atomic mass d. Atomic volume
|
||||
|
47) Which set of elements is listed in order of increasing ionization energy ? a. Sb < As < S < P < Cl b. Cl < Sb < P < As < S c. As < Cl < P < S < Sb d. Sb < As < Cl < S < P
|
||||
|
48) Which of the p-block elements are not representative elements ? a. Alkali metals (I-A) b. Group-14 elements (IV-A) c. Group-18 elements (VIII-A) d. Halogens (VII-A)
|
||||
|
49) Which of the following will not form crystalline structure with opporitely charged ions_________________? a. H+ b. H- c. Mg2+ d. Ca2+
|
||||
|
50) Periodic table provides a basic framework to study elements with respect to their__________________? a. Physical properties b. Chemical properties c. Properties of their compounds d. All
|
||||
