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

Q71) Which of the following nitrogen containing compound does not give Lassaigne's test? Show Answer

Q72) Lassaigne's test is used for detection of Show Answer

Q73) Phenolic group can be identified by a positive Show Answer

Q74) The formula of the purple colour formed in Lassaigne's test for sulphur using sodium nitroprusside is Show Answer

Q75) Which one of the following test used for the identification of functional groups in organic compounds does not use copper reagent? Show Answer

Q76) Which one of the following complexes is violet in colour? Show Answer

Q77) Acidic ferric chloride solution on treatment with excess of potassium ferrocyanide gives a prussian blue coloured colloidal species. It is Show Answer

Q78) Seliwanoff test and xanthoproteic test are used for the we identification of . . . . and and . . . . respectively. Show Answer

Q79) Which of the following compound is added to the sodium extract before addition of silver nitrate for testing of halogens? Show Answer

Q80) Which of the following test cannot be used for identifying amino acids? Show Answer

Q81) Beilstein test is used for the estimation of which one of the following elements? Show Answer

Q82) Copper wire test for halogens is known as Show Answer

Q83) Which of the following reagents may be used to distinguish between phenol and benzoic acid? Show Answer

Q84) Biuret test is not given by Show Answer

Q85) The compound formed in the positive test for nitrogen with the Lassaigne solution of an organic compound is Show Answer

Q86) Which of the following compounds will give silver mirror with ammoniacal silver nitrate?
A. Formic acid
B. Formaldehyde
C. Benzaldehyde
D. Acetone
Choose the correct answer from the options given below. Show Answer

Q87) In a Lassigne's test for both nitrogen and sulphur in organic compounds with sodium thiocyanate solution the blood red colour formed is due to Show Answer

Q88) Before testing for halogens, the Lassaigne's extract is boiled with Show Answer

Q89) Given below are two statements, one is labelled as Assertion A and the other is labelled as Reason R.
Assertion (A) Permanganate titrations are not performed in presence of hydrochloric acid.
Reason (R) Chlorine is formed as a consequence of oxidation of hydrochloric acid.
In the light of the above statements, choose the correct answer from the options given below. Show Answer

Q90) In base vs acid titration, at the end point methyl orange is present as Show Answer

Q91) For standardising NaOH solution, which of the following is used as a primary standard? Show Answer

Q92) Given below are two statements.
Statement I Methyl orange is a weak acid.
Statement II The benzenoid form of methyl orange is more intense/deeply coloured than the quinonoid form.
In the light of the above statement, choose the most appropriate answer from the options given below. Show Answer

Q93) Given below are two statements.
One is labelled as Assertion A and the other is labelled as Reason R.
Assertion (A) Phenolphthalein is a pH dependent indicator, remains colourless in acidic solution and gives pink colour in basic medium.
Reason (R) Phenolphthalein is a weak acid. It doesn't dissociate in basic medium.
In the light of the above statements, choose the most appropriate answer from the options given below. Show Answer

Q94) The strength of an aqueous NaOH solution is most accurately determined by titrating
(Note: consider that an appropriate indicator is used.) Show Answer

Q95) Consider titration of NaOH solution versus 1.25 M oxalic acid solution. At the end point following burette readings were obtained.
(i) 4.5 mL
(ii) 4.5 mL
(iii) 4.4 mL
(iv) 4.4 mL
(v) 4.4 mL
If the volume of oxalic acid taken was 10.0 mL, then the molarity of the NaOH solution is . . . . . M. (Rounded off to the nearest integer) Show Answer

Q96) Assertion (A) Use of methyl orange is more appropriate in strong acid and strong base titration than phenolphthalein.
Reason (R) Methyl orange is a weak acid.
In the light of the above statements, choose the correct answer from the options given below. Show Answer

Q97) The indicator used in the titration of acetic acid with sodium hydroxide for quantitative estimation is Show Answer

Q98) The compound that is white in colour is Show Answer

Q99) A reagent which gives brilliant red precipitate with nickel ions in basic medium is Show Answer

Q100) In the wet tests for identification of various cations by precipitation. Which transition element cation doesn't belong to group IV in qualitative inorganic analysis? Show Answer

Q101) Which statement is not true with respect to nitrate ion test? Show Answer

Q102) Which one of the following when dissolved in water gives coloured solution in nitrogen atmosphere? Show Answer

Q103) In the flame test of a mixture of salts, a green flame with blue centre was observe(d) Which one of the following cations may be present? Show Answer

Q104) Reagent 1-napthylamine and sulphanilic acid in acetic acid is used for the detection of Show Answer