Test-1/12th/JEEMAIN(1)/Set-1 Mittal Sir

III-A/172 , Nehru Nagar Ghaziabad. Ph : 9811212090, 9868502091.

email : , website :

TEST-1/12th/JEE-MAIN(1)

Topic : SolidState (75%),

Nomenclature of Hydrocarbons (XI), Metallurgy of Al & Ag (25%)

Date : 6 April 2014

Max Marks : 120 Time : 50 minutes

“All the best”

(Total Marks : 120)

Single Correct Answer Type(+4/-1)

This section contains 30 multiple choice questions. Each question has 4 choices (a), (b), (c) and (d) for its answer, out of which ONLY ONE is correct.

  1. Radius of tetrahedral void in a c.c.p lattice is 100 Pm. Radius of octahedral void is –

(a) 184 Pm(b) 100 Pm(c) 54.3 Pm(d) 414 Pm

  1. Which of the following is not correct about graphite and diamond

(a) graphite  sp2, diamond  sp3

(b) graphite  good conductor of heat, diamond  Insulator of heat

(c) graphite  crystalline, diamond  crystalline

(d) graphite  good conductor of electricity, diamond  Insulator of electricity

  1. A crystal has formula P3Q2. If ‘P’ atoms form c.c.p lattice than

(a) ‘Q’ atom occupy all tetrahedral void(b) ‘Q’ atoms occupy rd of tetrahedral voids

(c) ‘Q’ atoms occupy all octahedral voids(d) ‘Q’ atoms occupy rd of octahedral voids.

  1. An element ‘A’ (atomic mass = 54 gm/mol) crystallises in F.C.C lattice with edge length 300 Pm. The pyknometric density of crystal was found to be 10 gm/cm3. This data show that crystal has –

(a) No defect(b) vacancy defect (c) impurity defect(d) Interstitial defect

  1. An element has b.c.c structure with cell edge 288 Pm. The density of element is 7.2 gm/cm3. Number of atoms present in 208 gm of element are

(a) 2.4  1022 atoms(b) 2.4  1023 atoms (c) 2.4  1024 atoms(d) 2.4  1025 atoms

  1. Coordination number of a molecule in a square close packed layer is –

(a) 4(b) 6(c) 8(d) 12

  1. If NaCl is doped with 2  10–4 mol% TlCl3, number of cation vaccancies formed are –

(a) 4  10+19(b) 2.4  10+18(c) 2.4  10+19(d) 1.2  10+18

  1. Which of the following set contain all network solid (covalent solid)

(a) graphite, diamond, SiO2(b) graphite, SiO2, I2

(c) Diamond, ice & Ar(d) HCl, SO2 & ice

  1. Packing fraction of the face shown in figure is

(a) 74 %

(b) 68%

(c) 57 %

(d) None of these

  1. Gallium (atomic mass = 70) has comparatively very low melting point for this one of the reason that it exist as Ga2 molecular solid. Gallium crystallises in ABCABC type packing in which each lattice point is occupied by Ga2 molecule. If volume of unit cell is 1.25  10–22 cm3 than density of crystal is –

(a) 7.47 gm/cm3(b) 3.73 gm/cm3(c) 5.6 gm/cm3(d) 11.2 gm/cm3

Space for rough work

  1. When silicon is doped with arsenic the semiconductor formed is of type

(a) ‘n’ type(b) ‘p’ type(c) n-p type(d) p-n type

  1. Total number of tetrahedral voids in 11.2 gm of crystal of iron which has H.C.P structure

(Fe = 56 gm/mol)

(a) 1.2  1023(b) 2.4  1023(c) 3.6  1023(d) 4.8  1023

  1. The length of body diagonal of a F.C.C lattice is 300 Pm. Distance between the centre of two adjoining faces is –

(a) 300 (b) (c) (d)

  1. A compound AB has rock salt structure in which ‘A’ ion occupy octahedral void of the F.C.C unit cell of ‘B’ ion. If all the ions present from an axis passing through two opposite faces are removed than formula of resulting crystal is

(a) A4B3(b) A3B4(c) A2B3(d) AB

  1. A sample of non stoichiometric cuprous oxide contain 90% Cu+ and remaining Cu++. The formula of oxide would be

(a) Cu2O(b) Cu2.1O(c) Cu1.8O(d) Cu1.9O

  1. In which case(s) the coordination number of cation is ‘8’

(i) ‘CsCl’ structure

(ii) Fluorite structure

(iii) Anti fluorite structure

(iv) Rock salt structure

(a) (i) & (ii)(b) (i) & (iii)(c) (i), (ii) & (iv)(d) All of these structures

  1. Total number of hexagonal faces in a truncated octahedron are

(a) 4(b) 6(c) 8(d) 12

  1. An element ‘A’ crystallises in ABABAB close packed structure. If radius of ‘A’ atom is

120 cm. Volume of unit cell is –

(a) 3.85  10–24 cm3(b) 5.864  10–24 cm3 (c) 3.85  10–23 cm3 (d) 5.864  10–23 cm3

  1. The correct I.U.P.A.C name of compound

CH3 – CH – CH2 – CH – CH2 – CH3

CH3 CH2CH3

(a) 3-Ethyl-5-methyl hexane(b) 4-Ethyl-2-methyl hexane

(c) 3-(-2-methyl propyl) pentane(d) all of these

  1. In compound 5-(2-Ethyl butyl)-3, 3-dimethyl decane, total number of ‘CH3’ present are –

(a) 6(b) 5(c) 7(d) 8

  1. In cyanide process of metallurgy of silver, the ore is leached with a dilute solution of NaCN in presence of gas –

(a) O2(b) Ar(c) CO2(d) H2

Space for rough work

  1. In metallurgy of aluminium, bauxite ore is leached with concentrated solution of NaOH because –

(a) Impurity Fe2O3 & TiO2 are soluble in NaOH

(b) Impurity SiO2 and Fe2O3 are soluble in NaOH

(c) Impurities Fe2O3 & TiO2 are insoluble in NaOH

(d) All impurities & Al2O3 are soluble in NaOH

  1. Percentage of Fe+++ ion is Fe0.95O is –

(a) 10.52%(b) 89.5%(c) 8.4%(d) 95%

  1. Cryolite is added in alumina to –

(a) decrease electrical consumption during electrolysis

(b) make more malleable aluminium

(c) decrease melting point of alumina

(d) decrease conductivity of alumina

  1. In cyanide process of metallurgy of silver, role of zinc is –

(a) Reducing agent (b) oxidation agent

(c) to decrease M. point of [Ag(CN)2]–(d) to increase M. point of [Ag(CN)2]–

  1. If ‘a’ stands for the edge length of the cubic systems :

simple cubic, body centred cubic and face centred cubic, then the ratio of radii of the

spheres in these systems will be respectively.

(a)a : a: a (b) a : a: a

(c) a : a: a (d) 1a : a: a

  1. Structure of a mixed oxide is cubic close packed (c.c.p). The cubic unit cell of mixed oxide is

composed of oxide ions. One fourth of the tetrahedral voids are occupied by divalent metal A

and the octahedral voids are occupied by a monovalent metal B. The formula of the oxide is

(a) ABO2(b) A2BO2 (c) A2B3O4 (d) AB2O2

  1. What will be the percentage of free space in bcc lattice?

(a) 32(b) 68 (c) 75 (d) no free space

  1. The arrangement of X– ions around A+ ion in solidAX is given in the figured (not drawn to scale). If the radius of X– is 250 pm, the radius of A+ is.

X–

A+

(a) 104 pm

(b) 125 pm

(c) 183 pm

(d) 57 pm

  1. If ionic radius of Cs+ and Cl– are 1.69Å and 1.81 Å respectively, the edge length of unit cell is

(a) 4.04 Å(b) 3.50 Å (c) 7.00 Å(d) None of these

Space for rough work

III-A/172 , Nehru Nagar Ghaziabad. Ph : 9811212090, 9868502091.

email : , website :

TEST-1/12th/JEE-MAIN(1)

Topic : SolidState (75%),

Nomenclature of Hydrocarbons (XI), Metallurgy of Al & Ag (25%)

Date : 6 April 2014

Max Marks : 120 Time : 50 minutes

Note : Write your name and roll no. above in box before filling the answers.

(Straight objective type)(+4/-1)

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III-A/172, Nehru Nagar Ghaziabad. Ph : 9811212090, 9868502091