Grand Test session


Chemistry





*Test of chemistry* 
 3rd chapter wise test by 
 *LSM series* 
 _Prepared by_
 *Prof SONIA RAO Subject *CHEMISTRY* 
For Urgent Result plz contact(+923472925391)
                                       *CHAPTER NUMBER : 01*
                                    *Introduction to Fundamental Concepts of Chemistry*
 *Q.1)* The total number of moles o sulfur required to produce 100 moles of sulphuric acid is
       a) 100
       b) 50
      c) 150
      d) 200
 *Q.2) A* container contains 18g water then which of the following is incorrect?
     a) 1NA H2O molecule
     b) 1NA H-atoms
     c) 1NA O-atoms
    d) 2NA O-atoms
 *Q.3 )* Which one element showing highest peak in mass spectrum
    a) Cadmium
    b) Iodine
    c) Sulfur
    d) Calcium
 *Q.4)* If we wanna to make 264g of ammonium sulphate by reacting ammonia with sulphuric acid, how much ammonia will be needed?
   a) 34g
   b) 38g
  c) 68g
  d) 17g
 *Q.5)* In the reaction C(s) + O2(g)  CO2(g), Carbon dioxide was collected by complete combustion of 6g of carbon. The volume of CO2 is close to
a) 5603cm3 at STP
b) 11207cm3 at STP
c) 22414cm3 at STP
d) 44828cm3 at STP
 *Q.6)* If 25g of limestone is heated, what will be the amount of CO2 produced if the reaction has 80% yield?
  a) 9.4g
  b) 9.9g
  c) 8.8g
  d) 11g
 *Q.7) A* sample of 2g of Fe2 (SO4)3, is dissolved in water to give 100cm3 of aqueous solution. What is the Conc. of SO42- ions? [ The relative formula mass of Fe2 (SO4)3 is 400]
a) 5 x 10-3mol dm-3
b) 1.5 x 10-2mol dm-3
c) 5 x 10-2mol dm-3
d) 1.5 x 10-1mol dm-3
 *Q.8) A* mixture of 10cm3 of oxygen & 40cm3 of hydrogen in sparked continuously. What is maximum theoretical decrease in volume of the reactants?
a) 10cm3
b) 15cm3
c) 30cm3
d) 20cm3
 *Q.9) A* person mixed 1.71g of sugarcane, C12 H22 O11 to his cup of oolong tea. The number of carbon atoms added is (mol. Mass of sugar=342g mol-10)
a) 7.20 x 1023
b) 3.61 x 1023
c) 6.06 x 1022
d) 6.50 x 1023
 *Q.10)* 1.0 mole of Ammonium chloride is allowed to react with 0.60 moles of calcium hydroxide, how much ammonia will be produced?
                                  2NH4Cl + Ca(OH)2  CaCl2 + 2NH3 + 2H2O
a) 6.8 grams
b) 34 grams
c) 66.6 grams
d) 17 grams
 *Q.11) A* sample in the ionization chamber of mass spectrometer is ionized by
a) Proton
b) Neutron
c) ELectron
d) Nucleus
 *Q.12)* 20 moles each of Mg & O2 react to formed MgO.The amount of MgO formed would be
a) 20g
b) 400g
c)800g
d)1600g
 *Q.13)* In the Mass spectrograph, the height peak tells us about
a) No. of isotopes
b) Sister atoms of element
c) Natural abundance of isotopes
d) Nuclei of atoms of an element
 *Q.14)* How many moles of Oxygen gas can be obtained by the electrolytic decomposition of 90g of water
a) 2 moles
b) 4.5 moles
c) 2.5 moles
d) 5 moles
 *Q.15)* We have a mixture of 5ml of CH4 & 10ml of C2 H6 for the production of CO2 on complete combustion. How CO2 will be produced
a) 15ml
b)25ml
c) 45ml
d)60ml
 *Q.16)* what will be %age of oxygen in the Calcium Carbonate
a) 40%
b) 12%
c) 65%
d) 48%
 *Q.17) A* Compound having empirical formula C3H3O & its molecular mass is 110.02. Its molecular formula is
a) C3H3O
b) C9H9O3
c) C3H6O2
d) C6H6O2
 *Q.18) A* hydrocarbon contain C = 80%, H = 20%. What is its empirical formula?
a)CH2
b)CH4
c)CH3
d)C2H6
 *Q.19) A* solution has 92g ethyl alcohol, 96g methyl alcohol, 90g water. What will be mole fraction of water in the solution
a)0.2
b)0.3
c)0.4
d)0.5
 *Q.20)* The modern atomic mass scale is based on the
a) C12
b) O16
c) H1
d) C13
 *Q.21)* Which one of them volume is occupied by the 28g of N2 at STP?
a) 2.24 dm3
b) 22.4 dm3
c) 112 dm3
d) 1.12 dm3
 *Q.22)* 0.5 moles of each one methane gas & ammonia gas have equal
a) Volume
b) Mass
c) Atoms
d) Molecules
 *Q.23)* Mass of Natrium in 53g of Na2CO3
a) 23g
b) 92g
c) 46g
d) 106g
 *Q.24)* The number of moles of CO2 which contained the 8g of oxygen
a) 0.25
b) 0.50
c) 1.00
d)2.00
 *Q.25)* 0.5mol of the Cu2S is roasted in excess of oxygen to yield Cu & SO2, According to the reaction Cu2S + O2 2Cu + SO2. The mass of Cu formed in the reaction is nearly
a) 70.5g
b) 63.5g
c) 84.5g
d) 96.5g
 **Q.26*) A* polymer of empirical formula CH2 has molar mass of 28000g mol-1 . Its molecular formula will be
a) 100 times that of its empirical formula
b) 200 times that of its empirical formula
c) 500 times that of its empirical formula
d) 2000 times that of its empirical formula
 **Q.27)* The number of molecules in 9g of ice is
a) 6.02 x 1024
b) 6.02 x 1023
c) 3.01 x 1024
d) 3.01 x 1023
 *Q.28)* When 8g (4 moles) of H2 react with 2 moles of O2, how many moles of water will be formed?
a) Five
b) Six
c) Four
d) Three
 *Q.29)* With the help of spectral data given calculate the mass of Neon & encircle the best option. ( %age of 10Ne20 , 10Ne21 , 10Ne22 are 90.92%, 0.26% & 8.82% respectively).
a) 22.18 amu
b) 21.18 amu
c) 20.18 amu
d) 22.20 amu
 *Q.30)* Which one of them contains maximum number of molecules:
a) 16g of CH4
b) 16g of CO2
c) 16g of O2
d) 16g of H2O
 *

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Key 

Check your Result, 
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Key
1 a
2 b
3 b
4 c
5 b
6 d
7 d
8 c
9 b
10 d
11 c
12 c
13 c
14 c
15 b
16 d
17 d
18 c
19 d
20 a
21 a
22 d
23 a
24 a
25 b
26 d
27 d
28 c
29 c
30 a



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Regards : Liaqat Mdcat