Practice Test


Q1) A standard solution is one Show Answer


Q2) Normality, molarity, equivalent mass and molecular mass are related to each other as Show Answer


Q3) Which is not correct about primary standard? Show Answer


Q4) Equivalent mass of Mohr's salt reacts with Show Answer


Q5) One mole of Mohr 's salt reacts with Show Answer


Q6) In the titration of sodium carbonate with hydrochloric acid taken in burette the indicator used is/are Show Answer


Q7) The essential condition for an indicator to be used in a titration is Show Answer


Q8) In the titration of weak acid with strong base, at end point Show Answer


Q9) Metals like silver and copper can be obtained in colloidal state by Show Answer


Q10) In which of the following acid-base titration, pH is greater than 8 at the equivalence point? Show Answer


Q11) The indicator used in titrating oxalic acid with caustic soda solution is Show Answer


Q12) The change in pH near the end point will be maximum in the titration of Show Answer


Q13) Why are strong acids generally used as standard solution in acid-base titration? Show Answer


Q14) Choose the correct statement Show Answer


Q15) Process of dissolution of a salt is exothermic if Show Answer


Q16) During the determination of heat of solution of copper sulphate, salt is taken in powdered form because Show Answer


Q17) Heat of neutralization of a strong acid and strong base is nearly equal to Show Answer


Q18) The stability of dispersed phase in a lyophobic colloid is due to Show Answer


Q19) Heat of neutralization of a strong acid by a strong base is a constant value because Show Answer


Q20) Which of the following statement is not correct in respect of hydrophilic sols? Show Answer


Q21) Bredig's arc method can not be used to prepare colloidal solution of which of the following? Show Answer


Q22) The enthalpy of neutralization of acetic acid and sodium hydroxide is -55.4 kJ what is the heat of formation of water, than heat evolved on neutralization is Show Answer


Q23) Equal volume of methanoic acid and sodium hydroxide are mixed. If x is the heat of formation of water, then heat evolved on neutralization is Show Answer


Q24) Lyophilic colloids are stable due to Show Answer


Q25) Which of the following is a lyophilic colloid? Show Answer


Q26) Under a given set of experimental conditions, with increase of concentration of reactants, the rate of a chemical reaction Show Answer


Q27) Which of the following does not affect the rate of reaction? Show Answer


Q28) Rate of reaction Show Answer


Q29) Which of the following can form colloidal solution with water? Show Answer


Q30) In colloidal state, particle size ranges from Show Answer


Q31) Which of the following constitutes irreversible colloidal system in water as dispersion medium? Show Answer


Q32) Which one among the following sols is hydrophobic? Show Answer


Q33) Which of the following substance is not used for preparing lyophilic sol? Show Answer


Q34) The rate of reaction increase with increase of temperature because Show Answer


Q35) pH indicators are Show Answer


Q36) Heat of neutralization is least when Show Answer


Q37) Heat of neutralization of aqueous hydrochloric acid by N a O H is x kcal/mole of H C l. Calculate the heat of neutralization per mole of aqueous acetic acid. Show Answer


Q38) Which of the following does not turn blue litmus red? Show Answer


Q39) Carbylamine test is used to Show Answer


Q40) Lucas reagent is used to Show Answer


Q41) Aldehydes and ketones can be distinguished from each other by Show Answer


Q42) Presence of phenolic group can be confirmed by Show Answer


Q43) Which of the following test is not given by phenols? Show Answer


Q44) Sodium nitroprusside test is used to distinguish between Show Answer


Q45) Which of the following tests can not be used to distinguish between aldehydes and ketones? Show Answer


Q46) When a pinch of sodium bicarbonate is added to carboxylic acid brisk effervescence is produced. This effervescence is produced due to evolution of Show Answer


Q47) Small amount of zinc dust is added to reaction mixture during preparation of acetanilide because Show Answer


Q48) Anilides are generally Show Answer


Q49) Diazo coupling is useful to prepare Show Answer


Q50) Nitration of aniline is achieved by Show Answer


Q51) Reaction of aniline with acetyl chloride in the presence of NaOH gives Show Answer


Q52) Acetanilide finds application in medicine as Show Answer


Q53) When aniline is heated with acetic anhydride and acylation because Show Answer


Q54) Nitration of aniline is carried out after acylation because Show Answer


Q55) During coupling reaction of benzenediazonium chloride and aniline the pH of the reaction medium should be Show Answer


Q56) Mohr's salt is a Show Answer


Q57) During preparation of Mohr's salt equimolar mixture of ..........................is dissolved in water. Which one of the following should be filled in blank? Show Answer


Q58) Sometimes on cooling the saturated solution, crystallisation does not occur. In that case a crystal of same substance is placed in the saturated solution which includes crystallisation. The process is known as Show Answer


Q59) Total number of ions produced when potash alum is dissolved in water is Show Answer


Q60) Lead has been placed in group 1st and 2nd because Show Answer


Q61) In third group, iron gives blood red coloration with ammonium thiocyanate due to the formation of the compound Show Answer


Q62) Nitrate is confirmed by ring test. The brown color of the ring is due to the formation of Show Answer


Q63) Which does not give borax bead test? Show Answer


Q64) A blue colouration is not obtained when Show Answer


Q65) On addition of aqueous NaOH to a salt solution, a white gelatinous precipitate is formed, which dissolved inexcess alkali. The salt solution contains Show Answer


Q66) A salt on treatment with dilute HCl gives a pungent smelling gas and a yellow precipitate. The salt gives green flame when tested. The solution gives a yellow precipitate with potassium chromate. The salt is Show Answer


Q67) Which of the following statement is correct? Show Answer


Q68) When a substance A reacts with water it produces a combustible gas B and a solution substance C in water.When another substance D reacts with this solution of C, it also produce the same gas B on warming but D can produce gas B on reaction with dilute sulphuric acid at room temperature. A imparts a deep golden yellow color to a smokeless flame of bunsen burner. A, B, C and D respectively are Show Answer


Q69) A gas X is passed through water to form a saturated solution. The aqueous solution on treatment with silver nitrate gives a white precipitate. The saturated aqueous solution also dissolves magnesium ribbon with evolution of colourless gas Y. Identify X and Y. Show Answer


Q70) A metal nitrate reacts with KI to give a black precipitate which on addition of excess of KI is converted into orange colour solution. The cation of the metal nitrate is Show Answer