JAC Class 11 Model Question Paper Chemistry

झारखंड बोर्ड

मॉडल पेपर

Class 11

SET-I
(CHEMISTRY)
Avogadro number is equal to
22 (B)lxlO22
(A) 6.022 x 10
(D) 6.022 x 1023
(C)lxlO23

(A) 6.022 x 1022 (B)lxlO22
(C)lxlO23 (D) 6.022 xlO23
The molecular mass of CH4 is

(A) 10 u (B) 14 u
(D) None of these
(C)16u
CH
(A) 10 U (B) 14 U
(C)16U

24
How many neutrons are present in the nucleus

(A) 13 (B)10-
(D) None of these
(C)12

12

(A) 13 (B)10
(C)12
The electronic configuration of ion O2"
2" is

(A) Is2 22 2p6 3s1 (B) Is2 2^2 2p6
(C) Is2 2S2 2p5 (D) None of these

(A)ls22s22p63s1 (B)ls22^22p6
(C) Is2 2^2 2p5(D)
Using s,p,d notation, the orbital with the quantum number, n=3, / =1 will be

(A) 3 s(B) 3d
(C)3p(D) None of these
^^R^2TT n=3, l=\

(A) 3 s(B) 3d
(C) 3p(D) ^^\^ ik
Fe belongs to which block in the periodic table ?
(A) s-Block(B) p-Block

(C)d-Block(D) None of these
3-ilcicf ^l^djfl c^ fct^Tii ceiTcr> ^ 3TcTafcT Fe 3TRTT

(A) s-^c^fe(B) p-
(C) d-^cf^^(D)
General outer electronic Configuration of p- block element is
(A) ns2 np^6 (B) ns1'2
"2 (D) None of these
P-
(A) ns2 np^61-2
(B) ns1

8 The hybridisation of C in CH4 is

(A) (B)
(C)
CH4 ^ C
(A) (B) SP
(Q
The shape of H20 is
(A) T- Shape (B) Bent
(C) Trigonal pyramidal (D)None of these

(A) T-
(D)
1 o The no. of lone Pairs of C1F3 4

(A) 1 (B) t
(C) v3 (D),Hmc
CIF3 cfDT

(A) 1 (B) 2
(D) <=
(C) 3
11 P/T = Constant is
(A) Charles' law (B) Gay Lusac's law
(C) Boyle's law (D)None of these

(A) ^^lcr^f cI5T f^RTaT(B) ^-<
(C) ^fRTcT cf5T fcR^T(D)
10 dm3 of hydrogen under 1 bar pressure are contained in a cylinder which has
12
a movable piston. The piston is moved in until the same mass of gas occupies 2
dm3 at the same temperature. What will be the pressure in the cylinder?

(A) 5 bar(B)6bar
(C) 7 bar(D) None of these

(A) 5 bar(B)6bar
(C)7bar(D)i^ ^
13 The thermo chemical reaction, C4Hi0(g)+13/2 o2(g)—? 4CO2 (g)+5H2O(/) ;
Ac H ^ -2658.OKJ mol"1 is the exmple of
c
(A) enthalpy of combustion(B) enthalpy of atomisation
(C) enthalpy of solution(D) None of these

^ C4Hi0(g)+13/2 o2 (g) —? 4CQ2 (g)+5H2O(l)
ACH =-2658.

(A) ^&g\ Uc^c^t cJ5T(B)
(C) Tcid^l^i U^e^^dfr cJ5T(D)
14 Standard enthalpy of reaction is equal to
(A)Standard enthalp^ of formation of products +
Standard enthapies of formation of reactants .
(B)Standard enthalpie^ of formation of products -
Standard enthapies of formation of reactants .
(C)Standard enthalp^ of formation of products
Standard enthapies of formation of reactants
(D)None of these.

1 5 The equilibrium Constant expression for the reaction,
CH3 COCH3 (1) ^ CH3 COCH3 (g) is
(A) Kc ^ [CH3COCH3 (1)] (B) Kc = [CH3COCH3 (g)]
(C) Kc = [CH3COC2H5 (1)] (D) None of these
CH3 C0CH3 (1) ^ CH3 COCH3 (g)

(A) Kc = [CH3COCH3 (1)] (B) Kc = [CH3COCH3 (g)]
(C) Kc = [CH3COC2H5 (1)] (D)
1 6 The formula of Conjugate base of species NH4+ is

(A)NH2.NH2(B)NH3
(C)N2(D) None of these

NH4+ cm xiH-^oc^l ^rr? cm
4
(A) NH2. NH2(B) NH3

(C)N2
1 7 For basic Solution,
(A)[H3O+] = [OH"] (B)[H3O+]>[OH"]
(C) [H3 O* ] < [OH"] (D) None of these

(A)[H3O+] = [OH"] (B) [H3 O+] > [OH"]
(C) [H3^^ ] < [OH"]

1 8 The oxidation number of B in NaBH4 is
(A) +5(B) +6
(C)+3(D) None of these
NaBH4 ^t B
(A) +5(B) +6
(C) +3(D)
19 In the redox reaction,
2 K(S) + F2 (g) ?2 KF (S) oxidation of which substance takes place?

(A) K(S)(B) F2 (g)
(C) Both of them(D) None of these

2 K(S) + F2 (g) —? 2 KF (S) ^ c^t^r ^rr ^^^ref c^r Sfra^f^^^^r ^tcrr

(A)K(S)(B)F2(g)

2 0 In ^ isolated System
(A)Both mass and energy can be exchanged with the surroundings.
(B)There is only exchange of energy with surrounding and no exchange of

mass takes place.
(C)There is neither exchange of mass nor of energy with the surrounding.

(D)None of these.

(A) "crf^^^T ^ sTc^r cr^rr 3oif

(B)
(C)yf^cl^T ^^ of eft
eftcTT % I
(D)^^il ^ c^r^
21 In the reaction,
Ca (HC03)2 + Ca (0H)2? X + 2H2O 'X' is
(A) Ca2C(B) Ca CQ3

(C) Both of them(D) None of these

Ca (HCO3)2 + Ca (OH): ? X + 2H2O

(A)Ca2C (B) Ca C03

22 In the reaction,
Na2 O2 + 2 H2O Product
the products are
(A) Na2O and H2 (B) NaOH and H2O2
(C)NaandH2 (D) None of these

Na2 O2 2 H2O

(A) Na2O and H2 (B) NaOH and H2O2
(C)NaandH2
23 The formula of Quick lime is
(A)CaCO2(B)Ca(OH)2
(C)CaO(D) None of these

(A)CaCO2(B)Ca(OH)2
(C)CaO(D)^r^
Which among the following is not^ o
2A
(A) Diamond(B) Graphite
(C)Coal(D) Phosphorus

(C) (D)
The formula of Tetraborane is
25
(A) B2 H6(B) B3H7
(C)B4H10(D) None of these

(A)B2H6(B)B3H7
(C)B4H10(D)^r^

NaH reacts with B2H6 to give
26
(A) Diborane(B) Orthoboric acid
(C) Sodium boro hydride (D) None of these

NaH,B2H6<

(C) (D)

27 O is
(A) Cyclobutane (B) Cyclopropane
(C) Cyclopentane (D)None of these

O
(B)
(C) (D)
2 8 IUPAC name of CH3 CH2 CO CH2 CH3 is

(A)Butan-2-01 (B) Butanal
(C) Pentan-3-one (D)None of these

CH3 CH2 CO CH2 CH3 ci5T IUPAC

(A) ^tl^ci- 2 -3TfcT

(D)
2 9 The number of sigma bonds present in the CH2 = CH2 molecule

(A) 6 (B) 4
(D)None of these
(C) 5

(A) 6 (B) 4
(C) 5 (D)

3 0 C6 H5 is
(A) Isopropyl free radical (B) Phenyl free radical

(C) Benzyl free radical (D) None of these

C6H5%

(A)
(D)
31 The reaction CH3

+CH3a Anhydrous Aldt3 +HL
is

(B) Friedel-Crafts alkylation reaction
(A) Halogenation

(C) Wurtz reaction (D)None of these

CH3

+CH3CI Anhydrous Al€$3

(A) (B)
(C) (D)

3 2 The IUPAC name of the products obtained by the Ozonolysis of Pent-2-ene are

(A)Butan-2-one and Ethanal
(B)Propanal and methanal
(C)Propanal and Ethanal
(D) None of these

crerr
(A)

(D)
3 3 In the Combustion reaction of Butane,

Heat
C4H10(g) + X 4CO2(g)+5H2O(g)
'X' is

(A) 11 o2(g) (B) 11 02 (g)

CO ^ 02 (g) (D) None of these

C4Hlo(g) + X - •^ 4CO2(g)+5H2O(g
'X't

(A) y o,(g) (B) 12 02 (g)
2

(C) Ii o2 (g)(D) None of these
2

3 A The Common ortho and para directing group is

(A) -OH(B) -CHO
(C) -NO2(D) None of these

(A) - OH(B) - CHO
(C) - NO2(D)

3 5 Which among the following is not Present in acid rain?

(A) Sulphuric acid(B) Nitric acid
(C) Sulphurous acid(D) Acetic acid

(A) ^.Hc^-hi^c^ 3f^^T(B)
(C) ^HeM^ixH 3T^^T(D)

SET-I
Answer

(1) (D) (19) (ft)
(2) (C) (20) (C)
(3) (C) (21) (B)
(4) (B) (22) (B)
(5) (C) (23) (C)
(6) (C) (24) (D)
(7) (A) (25) (C)
(8) (C) (26) (C)
(9) (B) (27) (C)
(10) (B) (28) (C)
(11) (B) (29) (C)
(12) (A) (30) (B)
(13) (A) (31) (B)
(14) (B) (32) (C)
(15) (B) (33) (C)
(16) (B) (34) (A)
(17) (C) (35) (D)
(18) (C)