What are the types of chemical reactions based on the direction of reaction ?

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Answer :

2 types of reaction based on direction
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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

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

Which one of the following statements is not correct? A Since voltage depends on concentrations, using standard conditions makes it easier to compare different electrochemical reactions. B We have to measure the cell potential to obtain the difference in potential energy because the potential of half-reactions cannot be measured directly. C The direction of a redox reaction can only be determined experimentally. D Half-cell potentials for half-reactions are determined by combining the relevant half-cell with a standardised half-cell.

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Last Answer : C The direction of a redox reaction can only be determined experimentally. 

Write the balanced chemical equations for the following reactions and identify the type of reaction in each case: -SST 10th

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Last Answer : This is an example of combination reaction. A combination reaction is one in which or more reactants combine to form a single product (b) NaOH(aq)-CH3COOH(l) → CH3COONa(aq)+H2O(l) This is an ... is also an exothermic reaction as it evolves a lot of heat. It is also known as oxidation reaction.

(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 reaction 2FeS04 — chemical-reactions-and-equations-chapter-wise-important-questions-class-10-science-5 (c) What happens when water is added to quick line. Write chemical equation. -Chemistry

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Last Answer : Answer. This reaction is used in photography. (c) Slaked lime is formed with hissing sound and lot of heat is envolved.

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

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Last Answer : Answer : B

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

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Last Answer : Define order of reaction

Kinetics is the study of: (1) The rate of chemical reaction (2) How fast the reactions go (3) The mechanisms and paths of the molecules take in joining from one reactant to products (4) All of these are correct

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Pick out the wrong statement. (A) In a multistep reaction, the slowest step is the rate determining step (B) In general, the rate of a reaction becomes triple for every 10°C rise in temperature (C) Slow chemical reactions have generally high values of activation energy (D) Molecularity of a reaction cannot be zero but the order of a reaction can be zero

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Last Answer : (B) In general, the rate of a reaction becomes triple for every 10°C rise in temperature

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 light (D) A chemical reaction occurs when the energy of the reacting molecule is less than the activation energy of the reaction

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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(B) Most of the enzyme catalysed reactions involve at least two substrates (C) Enzymes help in increasing the activation energy of the reaction (D) Equilibrium concentrations in enzyme catalysed reactions can be calculated by using the thermodynamic properties of substrates & prod

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Last Answer : (C) Enzymes help in increasing the activation energy of the reaction

The minimum energy required to allow a chemical reaction to proceed is termed as the 'threshold energy '. Chemical reactions with low activation energy are: (A) Always irreversible (B) Insensitive to temperature changes (C) Mostly irreversible (D) Highly temperature sensitive

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Last Answer : (B) Insensitive to temperature changes

Velocity of a chemical reaction (A) Decreases with increase in temperature (B) Increases with increase of pressure of reactants for all reactions (C) Decreases with increase of reactant concentration (D) None of these

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Last Answer : (D) None of these

Pick out the correct statement. (A) In catalytic reactions, the catalyst reacts with the reactants (B) A catalyst initiates a chemical reaction (C) A catalyst lowers the activation energy of the reacting molecules (D) A catalyst cannot be recovered chemically unchanged at the end of the chemical reaction

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The total change in the enthalpy of a system is independent of the (A) Number of intermediate chemical reactions involved (B) Pressure and temperature (C) State of combination and aggregation in the beginning and at the end of the reaction (D) None of these

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Last Answer : (A) Number of intermediate chemical reactions involved

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 reverse reaction rate. C Equilibrium is achieved when the concentrations of species become constant. D Equilibrium is achieved when the reaction quotient, Q, equals the equilibrium constant. E Equilibrium is achieved when reactant and product concentrations are equal.

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Last Answer : E Equilibrium is achieved when reactant and product concentrations are equal.

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 efficient catalyst for one or more chemical reactions in a living system. C Catalysts increase the rate of a reaction by altering the mechanism, thereby increasing the activation energy. D Catalysts do not alter the equilibrium constant for a chemical reaction.

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Which of the following chemical reactions does not lead to formation of a salt? w) Reaction of salts with acids. x) The reaction of base anhydrides with acid anhydrides. y) Action of water on oxides of nonmetals. z) Reaction of acid with base.

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Kinetics is the study of: (1) The rate of chemical reaction (2) How fast the reactions go (3) The mechanisms and paths of the molecules take in joining from one reactant to products (4) All of these are correct

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Last Answer : All of these are correct

What are the types of reactions based on electron transfer ?

Last Answer : 2 types of reactions based on electron transfer

How Kc can be applied to calculate direction of chemical reaction?

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Last Answer : (i) If < Kc Then the reaction will proceed in the forward direction until the equilibrium is established. (ii) If > Kc Then the reaction will proceed in the backward direction until the equilibrium is established. If = kc Then the reaction is already in equilibrium.

An alkaline solution is used to reduce the concentration of carbon dioxide in a stream from 10% to 0.1% by absorption with irreversible chemical reaction. The overall number of transfer units based on gas phase is: (A) 9.21 (B) 4.605 (C) 100 (D) 0.001

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Last Answer : (B) 4.605

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Identify the metal `M` whose extraction is based on the following reactions: `MS +2O_(2)rarr MSO_(4)` `2MS +3O_(2)rarr 2MO +2SO_(2)` `MS +2MO rarr 3M

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Which of the following chemical reactions depicts the oxidizing behaviour of `H_(2)SO_(4)` ?

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Can enzymes slow down chemical reactions?

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What are All of the chemical reactions in an organism's cells are called?

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What the step of Balancing chemical reactions?

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What is an example enzymes control chemical reactions?

Description : What is an example enzymes control chemical reactions?

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Do Chemical reactions occur at the same rate no matter what the size of the reactant particles?

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What organic molecule function as a catalysts for chemical reactions in living organisms?

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When chemical reactions occur energy is always absorbed?

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What According to modern chemistry what causes chemical reactions?

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Last Answer : A chemical reaction is caused by two compounds colliding. Thishappen with certain amount of force.