Description : Enzymes increase the rates of reactions by (A) Increasing the free energy of activation (B) Decreasing the energy of activation (C) Changing the equilibrium constant of the reaction (D) Increasing the free energy change of the reaction
Last Answer : Answer : B
Description : Pick out the wrong statement. (A) Catalytic activity of enzyme catalysed reactions which is affected by temperature, pH value & chemical agents, is maximum at a temperature of about 45°C ... in enzyme catalysed reactions can be calculated by using the thermodynamic properties of substrates & prod
Last Answer : (C) Enzymes help in increasing the activation energy of the reaction
Description : Which one of the following statements regarding a catalyst is not correct? A An enzyme is a catalyst that only binds certain substrates. B An enzyme is a protein that is a highly ... increasing the activation energy. D Catalysts do not alter the equilibrium constant for a chemical reaction.
Last Answer : C Catalysts increase the rate of a reaction by altering the mechanism, thereby increasing the activation energy.
Description : PH is the negative logarithm of the hydrogen Ion Concentration express4ed in moles/liter of aqueous solution. PH of buffer solution is calculated by. Henderson's equation Name the best ... Chemical kinetics deals with study of. Rates and mechanisms of chemical and Biochemical reactions
Last Answer : What does Thermodynamics helps in predicting ?
Description : A metabolic pathways is a (A) Route taken by chemicals (B) Sequence of enzyme facilitated chemical reactions (C) Route taken by an enzyme from one reaction to another (D) Sequence of origin of organic molecules
Description : Enzymes increases the rate of reactions by (A) Increasing the free energy of activation (B) Decreasing the energy of activation (C) Changing the equilibrium constant of the reaction (D) Increasing the free energy change of the reaction
Description : Enzymes accelerate the rate of reactions by (A) Increasing the equilibrium constant of reactions (B) Increasing the energy of activation (C) Decreasing the energy of activation (D) Decreasing the free energy change of the reaction
Last Answer : Answer : C
Description : The delivery of goods by one person to another for some purpose, upon a contract and that they shall, when the purpose is accomplished, be returned or otherwise disposed of by accounting to the ... then it is called: A. Contingent contract B. Bailment C. Pledge D. Contract of indemnity
Last Answer : B. Bailment
Description : Pick out the correct statement. (A) Reactions with high activation energies are very temperature sensitive (B) Chemical equilibrium is a static state (C) A photochemical reaction is catalysed by ... occurs when the energy of the reacting molecule is less than the activation energy of the reaction
Last Answer : (A) Reactions with high activation energies are very temperature sensitive (B) Chemical equilibrium is a static state
Description : Identify the INCORRECT statement below regarding chemical equilibrium. A All chemical reactions are, in principle, reversible. B Equilibrium is achieved when the forward reaction rate equals the ... equilibrium constant. E Equilibrium is achieved when reactant and product concentrations are equal.
Last Answer : E Equilibrium is achieved when reactant and product concentrations are equal.
Description : A number of forces acting at a point will be in equilibrium if a.Sum of the forces is zero b.Algebraic sum of the forces is zero c.Sum of the resolved parts in any two perpendicular directions are both zero d.None of the above e.The metacentre of the body
Last Answer : d. None of the above
Description : A number of forces acting at a point will be in equilibrium if (A) Their total sum is zero (B) Two resolved parts in two directions at right angles are equal (C) Sum of resolved parts in any two perpendicular directions are both zero (D) All of them are inclined equally
Last Answer : (C) Sum of resolved parts in any two perpendicular directions are both zero
Description : Template/lock and key theory of enzyme action is supported by (A) Enzymes speed up reaction (B) Enzymes occur in living beings and speed up certain reactions (C) Enzymes determine the direction of reaction (D) Compounds similar to substrate inhibit enzyme activity
Last Answer : Answer : D
Description : Enzyme catalysed reactions occur in (A) Pico seconds (B) Micro seconds (C) Milli seconds (D) None of these
Description : Which of the following regulatory reactions involves a reversible covalent modification of an enzyme? (A) Phosphorylation of serine OH on the enzyme (B) Allosteric modulation (C) Competitive inhibition (D) Non-competitive inhibition
Last Answer : Answer : A
Description : The rate of most enzyme catalysed reactions changes with pH. As the pH increases, this rate (A) reaches a minimum, then increases (B) reaches a maximum, then decreases (C) increases (D) decreases
Description : Isoenzymes are (A) Chemically, immunologically and electrophoretically different forms of an enzyme (B) Different forms of an enzyme similar in all properties (C) Catalysing different reactions (D) Having the same quaternary structures like the enzymes
Description : The ethical roots of the classical model of corporate social responsibility are found in which statement: A. The idea that the interests of stakeholders are as important as the interests of a corporation' ... C. The ethical imperative to cause no harm. D. The ethical imperative to prevent harm.
Last Answer : Answer: De Lorean
Description : How Cloud Federation provides benefits to Cloud providers? a) allows providers to earn revenue from computing resources that would otherwise be idle or underutilized b) enables cloud providers to expand their ... -level agreements (SLAs) into their partner provider's data centers. d) All the above
Last Answer : All the above
Description : (a) Write the essential condition for the following reaction to take place: 2AgBr--> 2Ag + Br2 Write one application of this reaction. (b) Complete the following chemical equation of a chemical ... science-5 (c) What happens when water is added to quick line. Write chemical equation. -Chemistry
Last Answer : Answer. This reaction is used in photography. (c) Slaked lime is formed with hissing sound and lot of heat is envolved.
Description : State the type of chemical reactions and chemical equations that take place in the following: (i) Magnesium wire is burnt in air. (ii) Electric current is passed through water. (iii) Ammonia and hydrogen chloride gases’are mixed. -Chemistry
Last Answer : This is the Answer:
Description : The rate at which the chemical reactions in the body cells take place is known as the __________ rate.?
Last Answer : ,.ll;
Description : In fluid flow, the boundary layer separation cannot occur (A) In case of boundaries experiencing form drag (B) At points of abrupt changes in the flow directions (C) In laminar flow (D) None of theseIn ... B) At points of abrupt changes in the flow directions (C) In laminar flow (D) None of these
Last Answer : (D) None of these
Description : Pick up the correct statement from the following: (A) The directions of plumb lines suspended at different points in a survey are not strictly parallel (B) In surveys of small extent, the effect of ... of large extent, the effect of curvature of the earth must be considered (D) All the above
Last Answer : (D) All the above
Description : The chemical reaction at one time the rate of forward and backward reaction becomes equal that state is called Equilibrium state. In a chemical equilibrium, the following properties remain unchanged with time. Pressure, Temperature, density, color Pressure, Temperature, density, color
Last Answer : Who proposed law of mass action ?
Description : In which of the following gaseous phase reactions, the equilibrium of the reaction remains unaffected by pressure changes? (A) 2O3 ⇌ 3O2 (B) N2 + O2 ⇌ 2NO (C) 2NO2 ⇌ N2O4 (D) 2SO2 + O2 ⇌ 2SO3
Last Answer : (B) N2 + O2 ⇌ 2NO
Description : Optically active compounds are capable of (A) Different reactions (B) Rotating plane of polarized light (C) Showing same chemical properties (D) None of these
Description : Arrhenius equation K = Ae-E a / R T In some reactions, Rate of reaction is directly proportional to. Concentration of catalyst Catalyst used in Bio-Chemical reactions is called. Enzymes Reactions catalyzed by light are called as. Photo catalyzed or Photosensitised reactions
Last Answer : Define order of reaction
Description : What is an example enzymes control chemical reactions?
Last Answer : Feel Free to Answer
Description : Pick out the wrong statement. (A) A particular chemical reaction is more temperature sensitive at low temperatures (B) A very high value of equilibrium constant, K (K >> 1) indicates that the ... ) Non-ideal flow takes place in reactors due to recycling, channeling or by creation of stagnant regions
Last Answer : (C) The intercept of the Arrhenius plot is called the 'activation energy
Description : What organic molecule function as a catalysts for chemical reactions in living organisms?
Last Answer : They are called enzymes, but there a probably billions of different enzymes. They are built from protein molecules decorated with sugars and sometimes include one or more metal atoms at their "active" site.
Description : What could cause elevated liver enzymes in an otherwise healthy 21 year old?
Last Answer : http://labtestsonline.org/understanding/analytes/liver-panel/tab/test http://www.nlm.nih.gov/medlineplus/hepatitis.html http://sitesearch.familydoctor.org/?q=liver&sp_cs=UTF-8 http://www.rimed.org/medhealthri/2011-03/2011-03-61.pdf
Description : Does having children cause you to recall childhood memories that would have otherwise remained forgotten?
Last Answer : For me yes. I’m always saying to my kids, “I just remembered…” they love hearing the stories from mom’s teenage years!
Description : What word means A substance that can cause something to happen faster than it might have otherwise but is not permanently changed itself?
Last Answer : That is the definition of a catalyst.
Description : No Government servant shall- a) In the performance of his official duties, act in a discourteous manner b) In his official dealings with the public or otherwise adopt dilatory tactics or willfully cause delays in disposal of the work assigned to him c) Both the A & B d) None of these
Last Answer : a) In the performance of his official duties, act in a discourteous manner
Description : 4. For which of the following reasons might inflation cause Real GDP to grow slower than it otherwise would? a. Inflation makes everyone poorer b. Inflation reduces the value of consumer debt c. Inflation increases business investment spending d. Inflation decreases savings in financial form
Last Answer : d. Inflation decreases savings in financial form
Last Answer : B. The free market theory which holds that managers are ethically obliged to ace as much money as possible for their stockholders because to do otherwise would undermine the very foundations of our free society.
Description : The role of a catalyst in a chemical reaction is to change the (A) Equilibrium constant (B) Activation energy (C) Final products (D) Heat of reaction
Last Answer : (B) Activation energy
Description : Catalytic action in a catalytic chemical reaction follows from the ability of catalyst to change the (A) Activation energy (B) Equilibrium constant (C) Heat of reaction (D) None of these
Last Answer : (A) Activation energy
Description : Pick out the wrong statement. (A) Use of different catalysts in a reversible catalytic chemical reaction does not change the equilibrium composition (B) Alumina is added as a promoter to ... Arrhenius plot (D) Presence of inerts affects the equilibrium conversion of reactants in a chemical reaction
Last Answer : (C) Activation energy for a reaction is obtained from the intercept of the Arrhenius plot
Description : Pick out the correct statement. (A) A chemical reaction accompanied by absorption of heat is called an exothermic reaction (B) A chemical reaction accompanied by evolution of heat is called an ... does not change on changing the concentration units (D) Chemical equilibrium state is dynamic in nature
Last Answer : (C) The rate constant for a first order reaction does not change on changing the concentration units
Description : The free energy change for a chemical reaction is given by (where, K = equilibrium constant) (A) RT ln K (B) -RT ln K (C) -R ln K (D) T ln K
Last Answer : (B) -RT ln K
Description : A system is in ______ equilibrium of its chemical composition does not change with time, i.e., no chemical reaction occurs. A. Chemical B. Thermal C. Mechanical D. Phase
Last Answer : Chemical
Description : Write chemical equation reactions taking place when carried out with the help of (a) Iron reacts with steam (b) Magnesium reacts with dil HCl (c) Copper is heated in air. -Chemistry
Last Answer : This is the Answer.
Description : Write chemical reactions taking place in zone of reduction of blast furnace.
Last Answer : Write chemical reactions taking place in zone of reduction of blast furnace.
Description : Spatial variation in horizontal and vertical directions is caused due to: (A) Physical weathering of rocks (B) Chemical weathering of rocks (C) Biological weathering of rocks (D) All of these
Last Answer : Answer: Option D
Description : An enzyme promotes a chemical reaction by (A) Lowering the energy of activation (B) Causing the release of heat which acts as a primer (C) Increasing molecular motion (D) Changing the free energy difference between substrate and product
Description : The Michaehis-Menten hypothesis: (A) Postulates the formation of an enzyme substrate complex (B) Enables us to calculate the isoelectric point of an enzyme (C) States that the ... independent of substrate concentration (D) States that the reaction rate is proportional to substrate concentration
Description : Two parallel wires carrying currents in opposite directions will: w) attract each other x) repel each other y) cause an electric arc to form z) not affect each other
Last Answer : ANSWER: X -- REPEL EACH OTHER