12 04 14 Sr.iplcO Chemistry Assignment 2

Narayana Sri Chaitanya IIT Academy

12-04-14_Sr.IPLCO_Chemistry_Assignment

Narayana Sri Chaitanya IIT Academy (Sri Sarvani Educational Society) Common Central Office – Madhapur – Hyderabad Assignment-2

SEC: SR IPLCO

DATE: 12-04-14

CHEMISTRY CHEMISTRY_ASSIGNMENT SECTION – I Straight Objective Type This section contains 8multiple choice questions. Each question has 4 choices (A), (B), (C) and (D), out of which ONLY ONE is correct. 1.

Coagulation values of the electrolytes AlCl3 and NaCl for As 2S3 solution are 0.093 and 52 respectively. How many times nearly AlCl3 has greater coagulating power than NaCl ? a) 930

2.

b) 1465 torr

c) 1520 torr

d) 1540 torr

b) d 2sp 3

c) sp 3d 2

d) dsp3

A crystal is made of particles X, Y and Z. X forms FCC packing, Y occupies all octahedral voids of X and Z occupies all tetrahedral voids of X. If all the particles along one body diagonal are removed, then the formula of crystal would be a) XYZ2

5.

d) 1000

Barium ions, CN and Co 2 form an ionic complex. If this complex is 75% ionized in aqueous solution with Vant Hoff factor(i) equal to four and paramagnetic moment is found to be 1.73 BM(due to spin only) then hybridization state of Co(II) in the complex will be a) sp3d

4.

c) 560

1 litre flask contains nitrogen along with a drop or two of water at 40o C, the total pressure being 760 Torr. If all the contents are transfered to another flask of 0.5L at the same temperature. The pressure of nitrogen setup in the second flask will be (aqueous tension at 40o C=55 torr) a) 1410 torr

3.

b) 520

b) X 2 YZ 2

c) X8 Y4 Z5

Bromination of salicyclic acid with Br2 water gives

Page No : 1

d) X 5 Y4 Z8

Narayana Sri Chaitanya IIT Academy a)

6.

12-04-14_Sr.IPLCO_Chemistry_Assignment

b)

c)

d)

The end product of the following reaction is

a )

OH

b)

c)

OH OHC

OHC

OHC

OH

Cl

Cl

C

d )

N

OH OHC

Cl

NC

NH2

NH2

7.

1 mole of equimolar mixture of ferric oxalate and ferrous oxalate will require x mole of KMnO4 in acidic medium for complete oxidation, x is a) 0.6 mole

8.

CHO

b) 0.9 mole

c) 0.3 mole

d) 1.8 mole

The oxidative cleavage of compounds Glucose (A) and Fructose (B) with HIO 4 leads to the formation of acids and aldehydes. The ratios of formic acid to formaldehyde for (A) and (B) respectively are a) 5/1, 3/2

b) 5/2, 3/1

c) 3/2, 5/2

d) 4/2, 5/1

SECTION – II Multiple Correct Answer Type This section contains 4 Multiple correct answer(s) type questions. Each question has 4 choices (A), (B), (C) and (D), out of which ONE OR MORE 9.

Which out of the following are nonresolvable? a )

10.

b)

c)

a)

d )

Which of the following statement(s) is/are correct ? a) The halides of Be are electron deficient and are polymeric with halogen bridges. b) BeF2 is very soluble in water owing to high solvation energy of Be2+ but fluorides of other alkaline earth metals are almost in soluble. Page No : 2

Narayana Sri Chaitanya IIT Academy 12-04-14_Sr.IPLCO_Chemistry_Assignment c) CaO,SrO and BaO react exothermically with water forming soluble hydroxides. d) The bicarbonates of alkaline earth metals are only stable in solutions.

Page No : 3

Narayana Sri Chaitanya IIT Academy 12-04-14_Sr.IPLCO_Chemistry_Assignment 11. Which of the following cannot be used as dehydrating agents for ammonia? a) Con. H 2SO 4  Fe  en 2  H 2O 2 

12.

b) anhydrous CaCl2 2

c) P4 O10

d) CaO

 en  complex(x). the correct statement about the complex(x) is

a) it is a low spin complex

b) it is diamagnetic

c) it shows geometrical isomerism

d) it is outer orbital complex

SECTION – III

Linked Comprehension Type This section contains 2 paragraphs. Based upon each paragraph, 3 multiple choice questions have to be answered. Each question has 4 choices (A), (B), (C) and (D) out of which ONLY ONE is correct.

Passage- I A volatile organic compound (X) on reaction with HI gives two products (Y) and (Z). Z gives red colour in Victor Meyer test but when (Z) is heated with conc.H2SO4 followed by hydrolysis gives (P), which immediately reacts with anhydrous ZnCl2  HCl. (Y) on treatment with C2 H 5OH  KOH followed by O3 / Me 2S gives Q. (Q) can give haloform test. (Q) when heated with NaOH gives (R) . haloform test and can decolourise Br2 water. 13.

Compound (X) is a )

14.

b)

c)

d)

b)

c)

d)

b)

c)

d)

a) Compound (Y) is.

a ) 15.

(R) also gives

a)

Compound (R) is a )

a)

Passage- II An unknown solid mixture contains any two of the following CaCO3 ; BaCl2 ; AgNO3 ; ZnSO 4 and NaOH . The mixture is completely soluble in water and the solution gives pink color with phenolphthalein. When dilute HCl is gradually added to the above solution, a precipitate is produced which with further addition of the acid dissolves.

Page No : 4

Narayana Sri Chaitanya IIT Academy 16. What is/are present in the solid ? a) AgNO3 and NaOH

12-04-14_Sr.IPLCO_Chemistry_Assignment

b) BaCl2 and Na 2SO4

c) ZnSO 4 and NaOH

d)

CaCO3 and AgNO3

17.

In a separate analysis, the aqueous solution of the mixture (as mentioned in the passage) gives white precipitate with K 2SO 4 , then what is / are present in the mixture ? a) CaCO 3

18.

b) BaCl2 and AgNO3

c) BaCl2 only

d) AgNO3 only

In a separate analysis, the aqueous solution of the mixture gives a precipitation (A) with brine. (A) is soluble in NH 4 OH . What is present in the mixture ? a) BaCl2

b) AgNO3

c) ZnSO 4

d) CaCO 3

SECTION – IV Matrix – Match Type This section contains 3 questions. Each question contains statements given in two columns which have to be matched. Statements (A, B, C, D) in Column I have to be matched with statements (p, q, r, s, t) in Column II. Any statement in Column I can have correct matching with ONE OR MORE statement(s) in column II. The answers to these questions have to be appropriately bubbled as illustrated in the following example. If the correct matches are A – p, A –t, B – p, B – q, B-s, B-t, C – p, C –r C-t, and D – q then the correctly bubbled matrix should be as shown:

Match the compounds listed in column-I with characteristic(s) listed in column-II 19.

Column I

Column II

(A)

B2 H 6

(p) Tetrahedral hybridization

(B)

Al2Cl6

(q) trigonal hydridisation

(C)

BeCl 2 (Solid)

(r)

Empty orbital(s) of central atom participate in hydridisation

(D)

SiH3 3 N

(s) two types of bonds (t)

p  d

Page No : 5

Narayana Sri Chaitanya IIT Academy

20.

12-04-14_Sr.IPLCO_Chemistry_Assignment

Column I (A)

Column II H O

3 R  MgX  HCHO  Adduct 

(B)

(C) (D)

H O

3 R  MgX  CO2  Adduct  

H O

3  R  MgX  Ph  C  N  Adduct 

CHEMISTRY Qno 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20

Key C B D D C D B A A,C A,B,C,D A,B,C A,B D A B C B B

(a  p, r,s; b  p, r,s; c  p, r,s;d  q, t) (a  q; b  s;

c  r;d  p)

Page No : 6

(p) Ketone (q)

10 alcohol with (n+1) carbons

(r)

Acid with (n+1) carbons

(s)

10 alcohol with (n+2) carbons

(t)

aldehyde