52639 + Interview Questions in Secondary School in Chemistry

1.	Which compound is predominantly formed when phenol is allowed to react with bromine in aqueous medium? (a) Picric acid (b) O-Bromophenol (c) 2, 4, 6-Tribromophenol (d) p-Bromophenol
Answer» Option (c) 2, 4, 6-TribromophenolExplanation:Mark as BRAINLY PLEASE.

Discussion

2.	The correct order of boiling point of primary (1°), secondary (2°) and tertiary (3°) alcohols is (a) 1° > 2° > 3° (b) 3° > 2° > 1° (c) 2° > 1° > 3° (d) 2° > 3° > 1°
Answer» Correct option isA1degree >2 degree >3 degreeThe presence of −OH groups in a COMPOUND leads to Hydrogen-bonding which greatly increases its boiling. Generally, the more 'exposed' the −OH group, the better it can PARTICIPATE in intermolecular H-bonding and thus, the boiling POINT will elevate. By that logic, primary alcohols will have the highest boiling point while tertiary alcohols will have the lowest boiling point.1°>2°>3°Thanks

Discussion

3.	What is the correct order of reactivity of alcohols in the following reaction? [NCERT Exemplar] (a) 1° > 2° > 3° (b) P < 2° > 3° (c) 3° > 2° > 1° (d) 3° > 1° > 2°
Answer» I think so option b is the ANSWER for your QUESTION OK follow me PLEASE mark my answer as brainlest answer

Discussion

4.	IUPAC name of the compound is _________ . [NCERT Exemplar] (a) 1-methoxy-l-methylethane (b) 2-methoxy-2-methylethane (c) 2-methoxypropane (d) isopropylmethyl ether
Answer» I THINK so option b is the ANSWER for your QUESTION OK follow me PLEASE mark my answer as brainlest answer

Discussion

5.	CH3CH2OH can be converted into CH3CHO by __________ . [NCERT Exemplar] (a) catalytic hydrogenation (b) treatment with LiAlH4 (c) treatment with pyridinium chlorochromate (d) treatment with KMnO4
Answer» I think so option a is the ANSWER for your QUESTION OK FOLLOW me PLEASE MARK my answer as brainlest answer

Discussion

6.	How many alcohols with molecular formula C4H10O are chiral in nature? [NCERT Exemplar] (a) 1 (b) 2 (c) 3 (d) 4
Answer» the ANSWER for your QUESTION is option b is the answer for your question OK follow me please MARK my answer as brainlest answer

Discussion

7.	Wht is the dimension formula of power
Answer» Power = M¹L²T^_3 is the DIMENSION of the power.Of ANYONE in CLASS 11 please comment me your name and INSTAGRAM I'd becz I am creating a group of class 11 students.Explanation:plz select this answer as Brainilist. thanks

Discussion

8.	Chemical formula of oragonite is
Answer» CaCo3 is the CHEMICAL FORMULA of argonite FOLLOW me Mark as brainlist answer

Discussion

9.	Name a non - metal which is used to preserve canned food due to its non - reactive nature..
Answer» nitrogenThe non-metal used to preserve food item is nitrogen. Explanation: Nitrogen has a valency of 3. HENCE it is not much reactive under NORMAL conditions.hope it HELPS you...mark it as brainliest...

Discussion

10.	(A): The ph of a solution changes from 5 to 8 when the solution is di (R) : When the conc.of H+ ion decreases by 10 times, thehomto 8 when the solution is diluted by 1000 times.reases by one unit.
Answer» When the conc.of H+ ion DECREASES by 10 times, the hom to 8 when the solution is diluted by 1000 times. reases by ONE unit. .

Discussion

11.	What is the molarity of h2so4 solution if 25 ml is exactly neutralised with 32.63 ml of 0.164m naoh
Answer» hey is it 0.164 molality or molarityif it's molarity then SOLUTION would be suchM1V1=M2V2M1 2510^-3=32.6310^-30.164M1=0.214Mhope WO HELPFUL if it's molality then ask in comment i can ans that too..

Discussion

12.	Monochlorination of toluene in sunlight followed by hydrolysis with aq. NaOH yields. [NCERT Exemplar] (a) o-Cresol (b) m-Cresol (c) 2, 4-Dihydroxytoluene (d) Benzyl alcohol
Answer» KCN" (and any subsequent WORDS) was ignored because we LIMIT QUERIES to 32 words.

Discussion

13.	(a) Etard reaction (b) Gattermann Koch reaction (c) Williamson synthesis (d) Esterification
Answer» OPTION DEXPLANATION:this is the ANSWER of your QUESTION

Discussion

14.	The electrophile involved in Riemer-Tiemann reaction of phenol with CHCl3 in presence of NaOH
Answer» In the reaction the ELECTROPHILE INVOLVED is dichlorocarbene (:CCL2). In Reimer-Tiemann reaction, phenol in presence of NaOH REACTS with chloroform to give salicyladehyde

Discussion

15.	Find the product of the given reaction:
Answer» I THINK so this is glocouse this is the ANSWER for your QUESTION OK FOLLOW me Explanation:PLEASE mark my answer as brainlest answer

Discussion

16.	Arrange the following in decreasing order of acidic character: (a) IV > III > I > II (b) II > IV > I > III (c) I > II > III > IV (d) III > I > II > IV
Answer» OPTION AEXPLANATION:this is the ANSWER of your QUESTION

Discussion

17.	Identify ‘C’ in the following: (a) Water (b) Ethanol (c) Propanone (d) Cumene hydroperoxide
Answer» The compound (C) is propanone. The first step is FRIEDEL - crafts alkylation reaction in which benzene reacts with 2 - CHLOROPROPANE in PRESENCE of ANHYDROUS

Discussion

18.	Among the following sets of reactants which one produces anisole? (a) CH3CHO : RMgX (b) C6H5OH; NaOH, CH3I (c) C6H5OH, neutral FeCl3 (d) C6H5 —CH3; CH3COCl; AlCl3
Answer» option a. CH3CHO :RMGX is the ANSWER for your QUESTION OK follow me Explanation:please mark my answer as brainlestanswer

Discussion

19.	CH3—O—CH (CH3)2 + HI → Products is/are
Answer» it will FORM 1 PRODUCT only

Discussion

20.	Which one of the following compounds has the most acid nature?
Answer» NAOH I THINK if I'm WRONG CORRECT me

Discussion

21.	The product ‘Z’ is (a) Benzaldehyde (b) Benzoic acid (c) Benzene (d) Toluene
Answer» OPTION B is CORRECT.#thankme#FOLLOWME

Discussion

22.	The heating of phenyl methyl ether with HI produces (a) Iodobenzene (b) Phenol (c) Benzene (d) Ethyl chloride
Answer» B.#thankme#FOLLOWME

Discussion

23.	Which of the following gives positive iodoform test?
Answer» 2-pentanone gives positive iodoform test.Iodoform test GIVEN by 2-alkanols ( CH 3 −CH−R∣ OH ) or by methyl ketones [ CH 3 −C−R∣∣ O ]2 pentanone - CH 3 − O∣∣ C −CH 2 −CH 2 −CH 3 The COMPOUNDS containing given groups show positive iodoform test.

Discussion

24.	The vapour density of a sample of SO2 gas is 28 . It's degree of disassociation in SO2 AND O2 IS 1/7 1/6 6/7 2/5
Answer» /7 HOPE it HELPS you.

Discussion

25.	Balance the following equation please:Zn+AgNO³--->Zn(NO³)²+Ag
Answer» ZN + 2AgNo3 = Zn(NO3)2 + 2Aghope it will HELP you........

Discussion

26.	3g of a trivalent metal was completely dissolved with 750ml of 1N HCl. The residual solution further require 1000ml of N/2 NaOH for the complete neutralisation. Find the atomic mass of the metal.
Answer» the ANSWER of this question is 450 which is the ATOMIC MASS of METAL

Discussion

27.	In the following sequence of reactions:
Answer» the REACTION is in your BOOK

Discussion

28.	N-propylamine (b) isopropylamine (c) ethylamine (d) ethylmethylamine
Answer» n-propylamine(B) ISOPROPYLAMINE(C) ETHYLAMINE(d) ethylmethylamineExplanation:OPTION b

Discussion

29.	M-Xylene reacts with Br2 in presence of FeBr3, what are products formed
Answer» m- XYLENE REACTS with BR2

Discussion

30.	X = KCN, Y = LiAlH4 (b) X = KCN, Y = H3O+ (c) X = CH3Cl, Y = AlCl3 HCl (d) X = CH3NH2, Y = HNO2
Answer» I THINK OPTION C is RIGHT.

Discussion

31.	Identify X and Y in the following sequence
Answer» PRODUCT is CH3 this is the answer for your question OK follow me PLEASE mark my answer as BRAINLEST answer

Discussion

32.	hope the given Chemistry MCQs for Class 12 with Answers Chapter 10 Haloalkanes and Haloarenes will help you. If you have any query regarding CBSE Class 12 Chemistry Haloalkanes and Haloarenes MCQs Pdf, drop a comment below and we will get back to you at the earliest.
Answer» tion:will" (and any subsequent WORDS) was IGNORED because we limit queries to 32 words

Discussion

33.	In the following sequence of reactions: (a) n-propylamine (b) isopropylamine (c) ethylamine (d) ethylmethylamine"
Answer» ylamine HOPE its HELPS you please MARK me as BRAINLIST and FOLLOW me

Discussion

34.	Match the reactions given in Column I with the types of reactions given in Column II. [NCERT Exemplar]
Answer» Match the REACTIONS given in COLUMN I with the TYPES of reactions given in Column II. [NCERT Exemplar]

Discussion

35.	Identify X and Y in the following sequence (a) X = KCN, Y = LiAlH4 (b) X = KCN, Y = H3O+ (c) X = CH3Cl, Y = AlCl3 HCl (d) X = CH3NH2, Y = HNO2
Answer» ANSWER IS OPTION D EXPLANATION:X = CH3NH2, Y = HNO2 HOPE YOU GOT IT PLS MARK IT AS BRAINLIEST

Discussion

36.	Name a coordination compound used in the treatment of lead poisoning.
Answer» HELLO GM MATE ...ETHYLENEDIAMINETETRAACETATE ( EDTA) IS A COMPOUND USED IN TREATMENT FOR LEAD POISONING..HOPE THIS HELPZ..☺

Discussion

37.	Write IUPAC name of the complex: [CoCl2(en)2]+.
Answer» The IUPAC name of the given COMPOUND is DICHLOROBIS(ETHYLENEDIAMINE) COBALT (III) ion.

Discussion

38.	What is meant by the instability constant of coordination compounds?
Answer» It is a measure of the strength of the interaction between the reagents that come together to form the complex. ... The stability constant(s) PROVIDE the information required to calculate the CONCENTRATION(s) of the complex(es) in SOLUTION. There are MANY areas of APPLICATION in chemistry, biology and medicine.

Discussion

39.	Zinc oxide reacts with carbon on heating to form zinc metal and carbon monoxide. Write a balanced chemical equation for this reaction. Name(i) Oxidising agent and (ii) reducing agent, in this reaction
Answer» TION:zno+c1) ZINC oxide2) CARBON

Discussion

40.	To which kind of synthetic fibres does terylene belong?
Answer» Osmosis: Osmosis is the movement of solvent PARTICLES across a semipermeable membrane from a dilute SOLUTION into a CONCENTRATED solution. The solvent moves to dilute the concentrated solution and equalize the CONCENTRATION on both SIDES of the membrane.Diffusion: Diffusion is the movement of particles from an area of higher concentration to lower concentration. The overall effect is to equalize concentration throughout the medium.Explanation:Hope it helps you.please mark as Brainliest. ⭐️⭐️⭐️

Discussion

41.	Give an example of homoleptic carbonyl.
Answer» Compounds in which a metal is BONDED with only carbonyl LIGANDS are CALLED Homoleptic Carbonyl compounds. For example, tetracarbonylnickle(0), pentacarbonyliron(0), decacarbonyldimanganese(0) etc. Decacarbonyldimanganese(0) is made up of two square pyramidal Mn(CO)5 units joined by a Mn-Mn BOND.

Discussion

42.	Give an example of solvate isomerism.
Answer» ISOMERS or HYDRATE ISOMERISM are the isomers WH

Discussion

43.	Which has strong field strength SCN– or CN–?
Answer» SCAN ANSWER is _a and 2 answer is +0

Discussion

44.	Why removal of water from [Ti(H2O)6] Cl3 on heating renders it colourless?
Answer» Explanation:The colour is due to the transition of e - from t2g to eg orbital. the d-orbitals splitting takes place when the ligands are there. Heating removes the water molecule from the coordination sphere.colour and magnetism of transition compounds mainly ARISES due to d electrons in transition metal ion-Sc+3 has no d electrons Ti (H2O)6 +3 is purple in colour . titanium dioxide more COMMONLY called Ti(IV) oxide is WHITE and has use in pigments PAPER, .paints. in d block transition elements Sc is first and Ti is second Ti(H20)63+ is purple in solution. ... The chemistry of scandium strongly resembles that of the lanthanides, with most of its compounds being colorless and DIAMAGNETIC. ... The water of hydration is driven off by heating to form pure Ti02: Ti02 • H20(s) Ti02(s) + H20(g) In its compounds, titanium is most often found in the +4 ... THE COLOUR IS DUE TO TRANSITION OF e_ from T2g to Eg orbital. the d orbitals spliting takes place when the ligands are there heating removes water molecule from the coordination sphere. as a result there is no crystal field spliting hence no colour is observed

Discussion

45.	What type of isomerism is exhibited by the complex [CO(NH3)5NO2]2+? [Foreign 2014]
Answer» bind to a metal ATOM EITHER through N or O atom and, hence TWO DIFFERENT isomers are formed

Discussion

46.	What type of isomerism is shown by the following complex: [Co(NH3)6][Cr(CN)6] [Delhi 2017; Foreign 2014]
Answer» 2015; Guwahati - 2015; All INDIA - 2014; Foreign - 2014; All India - 2013; All India - 2012; Delhi - 2011; All India - 2011 ... (i) What type of isomerism is shown by the complex [Co(NH3)6][Cr(CN)6]? (ii) Why a ... (III) Write the IUPAC name of the following complex : [Co(NH3)5(CO3)]Cl. Chemistry - Board PapersDelhi -

Discussion

47.	What type of isomerism is exhibited by the following complex: [CO(NH3)5SO4]Cl [Similar to CBSE 2018; Delhi 2017; Foreign 2014]
Answer» question_answer 1) Give evidence that [Co(NH3)5CL] SO4 and [Co(NH3)5 SO4] Cl are ionisation ISOMERS. ANSWER: When these compounds are DISSOLVED in water, they will give different ions in the solution which can be tested by ADDING AgNO3 solution and

Discussion

48.	Give any two limitations of valence bond theory.
Answer» Limitations of VALENCE Bond TheoryNo insight offered on the energies of the ELECTRONS. The theory assumes that electrons are localized in SPECIFIC areas. It does not give a quantitative interpretation of the thermodynamic or kinetic STABILITIES of coordination compounds. No distinction between weak and STRONG ligands.

Discussion

49.	Which type of isomerism is shown by [Co(NH3)5ONO]2+ and [Co(NH3)5NO2]2+?
Answer» Is shown by those co-ordination compounds which contain AMPHEDENTATE LIGANDS. ANSWER: It also SHOW IONISATION ISOMERISM

Discussion

50.	Write coordination isomer of [CO(NH3)6] [Cr(C2O4)3].
Answer» (CO(ox)3)(Co(nh3)6)EXPLANATION:just CHANGE the ligands

Discussion

Explore topic-wise InterviewSolutions in Current Affairs.

Which compound is predominantly formed when phenol is allowed to react with bromine in aqueous medium? (a) Picric acid (b) O-Bromophenol (c) 2, 4, 6-Tribromophenol (d) p-Bromophenol

The correct order of boiling point of primary (1°), secondary (2°) and tertiary (3°) alcohols is (a) 1° > 2° > 3° (b) 3° > 2° > 1° (c) 2° > 1° > 3° (d) 2° > 3° > 1°

What is the correct order of reactivity of alcohols in the following reaction? [NCERT Exemplar] (a) 1° > 2° > 3° (b) P < 2° > 3° (c) 3° > 2° > 1° (d) 3° > 1° > 2°

IUPAC name of the compound is _________ . [NCERT Exemplar] (a) 1-methoxy-l-methylethane (b) 2-methoxy-2-methylethane (c) 2-methoxypropane (d) isopropylmethyl ether

CH3CH2OH can be converted into CH3CHO by __________ . [NCERT Exemplar] (a) catalytic hydrogenation (b) treatment with LiAlH4 (c) treatment with pyridinium chlorochromate (d) treatment with KMnO4

How many alcohols with molecular formula C4H10O are chiral in nature? [NCERT Exemplar] (a) 1 (b) 2 (c) 3 (d) 4

Wht is the dimension formula of power ​

Chemical formula of oragonite is​

Name a non - metal which is used to preserve canned food due to its non - reactive nature..​

(A): The ph of a solution changes from 5 to 8 when the solution is di (R) : When the conc.of H+ ion decreases by 10 times, thehomto 8 when the solution is diluted by 1000 times.reases by one unit.​

What is the molarity of h2so4 solution if 25 ml is exactly neutralised with 32.63 ml of 0.164m naoh

Monochlorination of toluene in sunlight followed by hydrolysis with aq. NaOH yields. [NCERT Exemplar] (a) o-Cresol (b) m-Cresol (c) 2, 4-Dihydroxytoluene (d) Benzyl alcohol

(a) Etard reaction (b) Gattermann Koch reaction (c) Williamson synthesis (d) Esterification

The electrophile involved in Riemer-Tiemann reaction of phenol with CHCl3 in presence of NaOH

Find the product of the given reaction:

Arrange the following in decreasing order of acidic character: (a) IV > III > I > II (b) II > IV > I > III (c) I > II > III > IV (d) III > I > II > IV

Identify ‘C’ in the following: (a) Water (b) Ethanol (c) Propanone (d) Cumene hydroperoxide

Among the following sets of reactants which one produces anisole? (a) CH3CHO : RMgX (b) C6H5OH; NaOH, CH3I (c) C6H5OH, neutral FeCl3 (d) C6H5 —CH3; CH3COCl; AlCl3

CH3—O—CH (CH3)2 + HI → Products is/are

Which one of the following compounds has the most acid nature?

The product ‘Z’ is (a) Benzaldehyde (b) Benzoic acid (c) Benzene (d) Toluene

The heating of phenyl methyl ether with HI produces (a) Iodobenzene (b) Phenol (c) Benzene (d) Ethyl chloride

Which of the following gives positive iodoform test?

The vapour density of a sample of SO2 gas is 28 . It's degree of disassociation in SO2 AND O2 IS 1/7 1/6 6/7 2/5

Balance the following equation please:Zn+AgNO³--->Zn(NO³)²+Ag​

3g of a trivalent metal was completely dissolved with 750ml of 1N HCl. The residual solution further require 1000ml of N/2 NaOH for the complete neutralisation. Find the atomic mass of the metal.

In the following sequence of reactions:

N-propylamine (b) isopropylamine (c) ethylamine (d) ethylmethylamine

M-Xylene reacts with Br2 in presence of FeBr3, what are products formed

X = KCN, Y = LiAlH4 (b) X = KCN, Y = H3O+ (c) X = CH3Cl, Y = AlCl3 HCl (d) X = CH3NH2, Y = HNO2

Identify X and Y in the following sequence

hope the given Chemistry MCQs for Class 12 with Answers Chapter 10 Haloalkanes and Haloarenes will help you. If you have any query regarding CBSE Class 12 Chemistry Haloalkanes and Haloarenes MCQs Pdf, drop a comment below and we will get back to you at the earliest.

In the following sequence of reactions: (a) n-propylamine (b) isopropylamine (c) ethylamine (d) ethylmethylamine"

Match the reactions given in Column I with the types of reactions given in Column II. [NCERT Exemplar]

Identify X and Y in the following sequence (a) X = KCN, Y = LiAlH4 (b) X = KCN, Y = H3O+ (c) X = CH3Cl, Y = AlCl3 HCl (d) X = CH3NH2, Y = HNO2

Name a coordination compound used in the treatment of lead poisoning.

Write IUPAC name of the complex: [CoCl2(en)2]+.

What is meant by the instability constant of coordination compounds?

Zinc oxide reacts with carbon on heating to form zinc metal and carbon monoxide. Write a balanced chemical equation for this reaction. Name(i) Oxidising agent and (ii) reducing agent, in this reaction

To which kind of synthetic fibres does terylene belong?​

Give an example of homoleptic carbonyl.

Give an example of solvate isomerism.

Which has strong field strength SCN– or CN–?

Why removal of water from [Ti(H2O)6] Cl3 on heating renders it colourless?

What type of isomerism is exhibited by the complex [CO(NH3)5NO2]2+? [Foreign 2014]

What type of isomerism is shown by the following complex: [Co(NH3)6][Cr(CN)6] [Delhi 2017; Foreign 2014]

What type of isomerism is exhibited by the following complex: [CO(NH3)5SO4]Cl [Similar to CBSE 2018; Delhi 2017; Foreign 2014]

Give any two limitations of valence bond theory.

Which type of isomerism is shown by [Co(NH3)5ONO]2+ and [Co(NH3)5NO2]2+?

Write coordination isomer of [CO(NH3)6] [Cr(C2O4)3].

Wht is the dimension formula of power

Chemical formula of oragonite is

Name a non - metal which is used to preserve canned food due to its non - reactive nature..

(A): The ph of a solution changes from 5 to 8 when the solution is di (R) : When the conc.of H+ ion decreases by 10 times, thehomto 8 when the solution is diluted by 1000 times.reases by one unit.

Balance the following equation please:Zn+AgNO³--->Zn(NO³)²+Ag

To which kind of synthetic fibres does terylene belong?