Practice Test

Q1) The law of mass action was proposed by Show Answer

Q2) Which of the following factors influence a chemical system in accordance with the Le-Chaterlier' principle? Show Answer

Q3) Chemical reaction which proceeds only in one direction is called a/an Show Answer

Q4) When a reversible reaction acquires the equilibrium state, Show Answer

Q5) The rate at which a substance undergoes reaction is proportional to Show Answer

Q6) Which one of the following satements is correct? Show Answer

Q7) A reversible reaction is said to have attained equilibrium when Show Answer

Q8) Small value of equilibrium constant show that Show Answer

Q9) At a constant temperature, if a small amount of one of the products is removed, the equilibrium constant Show Answer

Q10) The active mass of a solid in heterogeneous equilibrium is taken as Show Answer

Q11) Le-Chatelier principle is applicable to Show Answer

Q12) The equilibrium constant in a reversible chemical reaction at a given temperature Show Answer

Q13) Which one of the following informations can be obtained on the basis of Le-Chatelier principle? Show Answer

Q14) The active mass of 64g of HI in a two litre flask would be Show Answer

Q15) The numerical value of equilibrium constant is affected by changing Show Answer

Q16) The chemical equilibrium is the state of chemical reaction at which Show Answer

Q17) Mathematical expression obtained by applying law of mass action to chemically reversible reaction is called Show Answer

Q18) Molar concentration per unit volume is called Show Answer

Q19) In an irreversible reaction Show Answer

Q20) Chemical reaction in which reactants react to form products and the products formed react with each other directly to form the original reactants back is known as _______ reaction Show Answer

Q21) A reaction in which heat is absorbed is called as an _______ reaction. Show Answer

Q22) A homogeneous reaction is one which occurs only in________ phase Show Answer

Q23) If the temperature is kept constant, the reaction which is accompanied by a decrease in volume will be favoured by increasing Show Answer

Q24) At a given pressure an endothermic reaction is favoured by increasing Show Answer

Q25) The ______ states that "In a homogeneous system at constant temperature the rate at which a substance reacts is proportional to its active mass and rate of a chemical reaction is proportional to the product of active masses of the reacting substances at that moment". Show Answer

Q26) According to Bronsted-Lowry concept a base is a substance that Show Answer

Q27) According to Lewis concept an acid is a substance which Show Answer

Q28) NaCl is a salt of Show Answer

Q29) pH of an acidic solution is Show Answer

Q30) Buffer solution is the solution which has Show Answer

Q31) The degree of dissociation of a weak electrolyte in aqueous solution Show Answer

Q32) Solutions with reserved acidity or alkalinity are known as Show Answer

Q33) The theory of ionization was put forward by Show Answer

Q34) A conjugate acid differs from its conjugate base by Show Answer

Q35) Precipitation takes place when the ionic product Show Answer

Q36) A buffer solution is a solution whose pH value on keeping in the air Show Answer

Q37) An aqueous solution of aluminium sulphate would show Show Answer

Q38) The acidic buffer solution can be prepared by mixing solutions of Show Answer

Q39) The concept that acid is proton donor and base is proton acceptor was given by Show Answer

Q40) Calculate the percent ionisation of 0.05M acetic acid Show Answer

Q41) The active mass is denoted by using the symbol Show Answer

Q42) The pH of a solution of sodium acetate will be Show Answer

Q43) Which of the following is an irreversible reaction? Show Answer

Q44) If ammonia is added to pure water, the concentration of a chemical species already present will decrease. This species is Show Answer

Q45) A example of a reversible reaction is Show Answer

Q46) Which of the following statements is correct about equilibrium constant? Show Answer

Q47) Le - Chatelier principle is not applicable to Show Answer

Q48) In the reaction, when there is no change in volume Show Answer

Q49) According to the Arrhenius concept base is a substance that Show Answer

Q50) Which one of the following is the weakest base? Show Answer

Q51) A mixture of a weak acid (say acetic acid) and its salts with a strong base (say sodium acetate) acts as a buffer solution. Which other pair of substances from the following may have similar properties? Show Answer

Q52) Which of the following is a Lewis base? Show Answer

Q53) Ionic product of water is Show Answer

Q54) Hydrogen ion concentration of neutral solution is Show Answer

Q55) Hydroxyl ion concentration of a neutral solution is Show Answer

Q56) pH of solution is defined as Show Answer

Q57) The hydroxyl ion concentration in a solution having pH 4 will be Show Answer

Q58) The unit of solubility is Show Answer

Q59) Which of the following substances on dissolving in water will give a basic solution? Show Answer

Q60) For the salt of weak acid and strong base,the hydrolysis constant is given by the expression Show Answer

Q61) A 0.2 molar solution of formic acid is 3.2% ionizes. Its ionization constant is Show Answer

Q62) The pH of 1.0 M aqueous solution of a weak acid HA is 6.0.Its dissociation constant is Show Answer

Q63) A 0.2 M solution of methanoic acid has degree of ionisation 0.032. Its dissociation constant would be Show Answer

Q64) Which of the following pairs will form a buffer Show Answer

Q65) Which one of the following is a stronger base? Show Answer