mittal sir
Test-1/XI/Mole/Set-P
Mittal Sir
BMC CLASSES
III-A/172, Nehru Nagar Ghaziabad. Ph : 9811212090, 9818922090
email : [email protected], website : www.bmcchemistry.com
Topic : Mole Concept (NCERT)
TEST-1/Class 11th
Date : 15th JUN 2017
Max Marks : 120
Time : 50 minutes
INSTRUCTIONS
General Instructions
1. Ensure matching of OMR sheet code with the Question paper Code before you
start marking your answers on OMR sheet
2. On the answer sheet, darken the appropriate bubble with Blue/Black Pen only.
Use of pencil and any other ink strictly prohibited.
3. Any kind of cutting, rubbing or use of whitener not allowed on answer sheet.
Roll No.
Name of the student
Single Correct Answer Type (+4/-1)
Each question has 4 choices (a), (b), (c) and (d) for its answer, out of which ONLY ONE is correct.
1. What mass of lime stone (80% CaCO3 & 20% SiO2) is required to prepare 2.24 lit CO2 gas at
S.T.P by treating with dilute HCl solution
(a) 8 gm
(b) 12.5 gm
(c) 8.9 gm
(d) 13.6 gm
2. A hydrocarbon CxHy on complete combustion produced 8.96 lit CO2 at S.T.P and 9 gm water.
The empirical formula of hydrocarbon is –
(a) C4H6
(b) C4H10
(c) C2H5
(d) CH2
3. Volume of water should be added in 500 ml of 24.5% w/v solution of H2SO4 to make it one
molar –
(a) 750 ml
(b) 1000 ml
(c) 1250 ml
(d) 1500 ml
Space for rough work
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Test-1/XI/Mole/Set-P
Mittal Sir
4. Number of electrons present in 1 drop of water (1 drop = 1 ml) , ‘d’ of water = 1gm/ml
10
electrons
18
(c) 10 × 6.02 × 1023 electrons
10
× 6.02 × 1023 elecrtrons
18
(d) 18 × 6.02 × 1023 electrons
(a)
(b)
5. In what ratio by volumes of 2 M and 3 M H2SO4 should be mixed so that final molarity of
solution become 2.8 M.
(a) 1 : 1
(b) 1 : 2
(c) 1 : 3
(d) 1 : 4
6. Number of oxygen atoms present in 54 amu of H2O are –
(a)
3
× 6.02 × 1023
2
(b)
3
atoms
2
(c) 3 atoms
(d) 3 × 6.02 × 1023
7. A mixture of Na2CO3 & MgCO3 on heating give a residue which is 60 % by weight of initial
mass. Percentage of Na2CO3 in the mixture is (Na = 23, Mg = 24)
(a) 23.6 %
(b) 33.6%
(c) 43.6%
(d) 53.6%
8. A sample of hard water contain 190 ppm of MgCl2 only as impurity. Molality of this solution is
approximately. (Mg = 24, Cl = 35.5)
(a) 2 m
(b) 0.2 m
(c) 0.02 m
(d) 0.002 m
9. Chlorine is prepared in the lab by treating MnO2 (M.wt = 87) with aqueous HCl according to
reaction
4 HCl + MnO2 → 2 H2O + MnCl2 + Cl2
What weight of HCl will react with 17.5 gm of MnO2.
(a) 7.55 gm
(b) 8.4 gm
(c) 29.2 gm
(d) 37.8 gm
10. Which mode of expressing concentration is independent of temperature?
(a) Molarity
(b) Molality
11. Which is correct match
(i) micro
(ii) giga
(iii) mega
(iv) femto
(a) (i) D (ii) B (iii) C (iv) A
(c) (i) D (ii) B (iii) A (iv) C
(c) Formality
(d) Normality
(A) 10–15
(B) 106
(C) 109
(D) 10–6
(b) (i) D (ii) C (iii) B (iv) A
(d) (i) D (ii) A (iii) B (iv) C
12. Which of the following has more number of electrons.
(a) 8 gm oxygen atoms
(b) 8 gm O2
(c) 8 gm O3
(d) All have same value
Space for rough work
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Test-1/XI/Mole/Set-P
Mittal Sir
13. In which case N2(g) is limiting reagent (Mg = 24)
(a) 1 mol N2 reacted with 10 gm H2 to form NH3
(b) 1 mol N2 reacted with 10 gm O2 to form nitric oxide (NO) gas
(c) 1 mol N2 reacted with 50 gm magnesium to form Mg3N2
(d) all of these
14. 500 ml of 0.2 M solution of MgCl2 was mixed with 1500 ml of 0.2 M solution of AlCl3,
concentration of chloride ion in final solution is – (Assume complete ionisation)
(a) 0.4 M
(b) 0.6 M
(c) 0.5 M
(d) 0.55 M
15. What volume of NH3 at S.T.P is required to obtain 3.01 × 1025 molecules of NH3.
(a) 1120 lit
(b) 1210 lit
(c) 1905 lit
(d) 2240 lit.
16. 50 gm of a mixture containing CH4 and SO2 contain equal masses of both, mole fraction of CH4
in the mixture is
4
2
(a)
(b)
5
5
(c)
3
5
(d)
1
5
17. The product of 41.012 × 1.21 is
(a) 49.62452
(b) 49.625
(c) 49.63
(d) 49.6
18. Vapour density of a gas containing only one element ‘X’ is 24. If element ‘X’ contain 8
protons, 8 electrons and 8 neutrons than atomicity of gas is
(Hint – Atomicity of N2 is 2 while of O3 is 3)
(a) 1
(b) 2
(c) 3
(d) 4
19. A gaseous hydrocarbon is used as fuel in several industries & other places. 1.12 lit of
hydrocarbon measured at S.T.P weighs 0.8 gm. A very small amount of hydrocarbon was
completely burnt in O2, it produced 2.2 mg of CO2, mass of water formed in this combustion
would be
(a) 3.6 mg
(b) 3.6 gm
(c) 1.8 gm
(d) 1.8 mg
20. An aqueous solution of glucose contain 3.01 × 1020 molecules of glucose per 10 ml of solution
molarity of solution is
(a) 0.5 M
(b) 0.05 M
(c) 0.005 M
(d) 0.0005 M
21. Volume of hydrogen evolved at S.T.P when excess of aluminium chips are added in 500 ml of
0.8M NaOH according to reaction
3
Al + NaOH + H2O → NaAlO2 +
H2
2
(a) 12.44 lit.
(b) 11.44 lit.
(c) 10.44 lit.
(d) 13.44 lit.
Space for rough work
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Test-1/XI/Mole/Set-P
Mittal Sir
22. What volume of I2 at S.T.P will be obtained when 16.6 gm of KI was treated with excess of
CuSO4 (k = 39, I =127)
CuSO4 + 2 KI  K2SO4 + CuI2 + I2
(a) 2.24 lit
(b) 1.12 lit
(c) 0.56 lit
(d) 4.48 lit
23. 50 lit of a gaseous mixture containing N2(g) and He(g) was treated with 50 lit of H2(g). After
completion of reaction the gaseous mixture obtained contain 20 lit H2 gas. Mole fraction of
Helium in final gaseous mixture is –
N2(g) + 3 H2(g)  2 NH3(g)
(Consider all measurement under S.T.P)
(a) 0.1
(b) 0.5
(c) 0.6
(d) 0.2
24. 108 ml of pure water (4°C) is saturated with NH3 gas, producing a solution of density 0.9
gm/ml. If this solution contains 25% NH3 by weight, the volume of final solution is :
(a) 135 ml
(b) 160 ml
(c) 112.8 ml (d) 172.4 ml
25. The molality of 2 M aq solution of NaCl. If density of solution is 1.08 gm/ml
Na = 23, Cl = 35.5
(a) 1.92 m
(b) 1.74 m
(c) 2.07 m
(d) 2.45 m
26. Total number of molecules in 224 lit of air measured at S.T.P if it contain (20 % O2 &
80 % M N2 by volume)
(a) 6.02 × 1023
(b) 6.02 × 1022
(c) 4.09 × 1024
(d) 6.02 × 1024
27. For the reaction -
Zn + HNO3 → Zn(NO3)2 + N2O + H2O
Coefficient of HNO3 and Zn (NO3)2 in balanced reaction are respectively.
(a) 3, 2
(b) 5, 3
(c) 4, 1
(d) 10, 4
28. An organic compound contain 24.15% carbon, 4.05% hydrogen and remaining chlorine. The M.
wt. of compound is 99. Empirical formula of compound is
(a) CH3Cl
(b) C2H3Cl
(c) CH2Cl
(d) CHCl2
29. Three elements A, B & C were taken and their binary compounds were analysed. 2 gm of ‘A’
react with 32 gm of ‘B’. While 16 gm of ‘B’ react with 16 gm of ‘C’. If compounds follow law
of reciprocal proportion than what weight of ‘A’ will react with 8 gm of ‘C’ .
(a) 0.5 gm
(b) 1.5 gm
(c) 2.0 gm
(d) 1 gm
30. Which has greater mass
(a) 1.5 gm molecules of H2O
(c) 0.8 moles of glucose
(b) 6.02 × 1024 molecules of H2
(d) 20 lit of CO2 at S.T.P
Space for rough work
BMC CLASSES PVT. LTD.
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Test-1/XI/Mole/Set-P
Mittal Sir
Test-1/XI/P
Date : 15/Jun/2017
Roll no. : _____________
Name of Candidate : ________________________________
Answer Sheet
a
a
a
a
a
a
a
a
a
a
1.
2.
3.
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b
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b
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c
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d
d
d
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d
d
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d
a
a
a
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a
a
b
b
b
b
b
b
b
b
b
b
c
c
c
c
c
c
c
c
c
c
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III-A/172, Nehru Nagar Gzb. Ph : 0120-4102287, 9811212090
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Test Analysis Sheet
Mittal Sir
Test-1/XI/Set-P
Date : 15/Jun/2017
Roll no. : _____________
Name of Candidate : _______________________________
Answer Sheet
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
a
a
a
a
a
a
a
a
a
a
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b
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a
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d
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d
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22.
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24.
25.
26.
27.
28.
29.
30.
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a
a
a
a
a
a
a
a
a
a
b
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d
d
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d
d
d
d
d
d
d
Test-1/XI/Mole/Set-P
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III-A/172, Nehru Nagar Gzb. Ph : 0120-4102287, 9811212090 email: [email protected]
Mittal Sir
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Test-1/XI/Mole/Set-P
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III-A/172, Nehru Nagar Gzb. Ph : 0120-4102287, 9811212090 email: [email protected]
Mittal Sir
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Test-1/XI/Mole/Set-P
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III-A/172, Nehru Nagar Gzb. Ph : 0120-4102287, 9811212090 email: [email protected]
Mittal Sir
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Test-1/XI/Mole/Set-P
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III-A/172, Nehru Nagar Gzb. Ph : 0120-4102287, 9811212090 email: [email protected]
Mittal Sir
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Test-1/XI/Mole/Set-P
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III-A/172, Nehru Nagar Gzb. Ph : 0120-4102287, 9811212090 email: [email protected]
Mittal Sir
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