MCQ's by emmadcool12


									Name: ___________________________________                                 Roll No: _______________

Class: ____________________________________                               Subject: _______________

   1) Symbols of element were suggested by:
       a) Cavendish               b) Lavisior            c) Gay Lussac              d) J.J Berzellius
   2) The electrolyte in lead storage battery is:
       a) H2SO4                   b) HCl                 c) HNO3                    d) H3PO4
   3) Salts that are formed by the reaction of strong acid with weak base are:
       a) Acidic salts            b) Common salts        c) Basic salts             d)Double salts
   4) One columb =
       a) 96800 Faraday           b) 96600 Faraday        c) 96500 Faraday          d)96560 Faraday
   5) The suspended particles in suspension are generally of the size:
       a) 10nm                    b) 100nm                c) 1200nm                 d)1nm
   6) The nucleus of an atom consists of:
       a) Electrons & Protons b) Protons & Neutrons c) Electrons and Neutrons d) Only Protons
   7) The molecular mass of heavy water is:
       a) 16 a.m.u                b) 18 a.m.u             c) 10 a.m.u               d) 22 a.m.u
   8) Diamond is used as abrasive because it is:
       a) Hard               b) Soft            c) Cubic                d) Bad conductor of electricity
   9) The nost reactive metal is:
       a) Na                     b) Cu                    c) Fe                    d) Ca
   10) Iodine belongs to this family:
       a) Boron                  b) Carbon                c) Nitrogen              d) Halogen
   11) The temperature at which the vapor pressure of a liquid becomes equal to its external pressure
       is called:
       a) Melting Point         b) Boiling Point          c) Freezing Point        d) Triple Point
   12) Which pair of element is chemically similar:
       a) K, Cr                 b) Cu, Ca                 c) F, Cl                  d) N, O
   13) The force which holds atom together in a molecule or crystal is called:
       a) Ionic Bond         b) Covalent Bond       c) Chemical Bond d) Co-ordinate Covalent Bond
   14) The Chemical formula of washing soda is:
       a) Na2CO3 .10H2O         b) Na2CO3 .8H2O           c) Na2CO3               d) Na2CO3 .12H2O
   15) Natural Gas mainly consists of:
       a) Methane                b) Ethane                c) Butane                d) Propane
   16) The PH value of Salvia is:
       a) 4.2                  b) 6.5                     c) 7.0                   d) 7.8
   17) Group 1-A elements are called:
       a) Halogens          b) Alkali Metals          c) Noble Gases           d) Alkaline Earth metals
   18) Who discovered oxygen?
a) J.Black                 b) J.Priestly                c) Scheele                 d) Cavendish
19) Which particle is the lightest in the following?
    a) Electron            b) Proton                     c) Neutron                  d) Alpha Particle
20) Which one of the following is a liquid metal?
    a) Gold               b) Silver                    c) Mercury                  d) Bromine
21) The alkanes are also called
    a) Olefins             b) Alkynes                   c)      Parrafin            d) Acetylenes
22) The sum of the mole fractions of solute and solvent is equal to:
    a) 3                 b) 2                         c)      1                  d)     0
23) The process in which a solid directly changes into vapours is known as:
    a) Sublimation        b) Evaporation                 c)      Boiling            d)     Melting
24) The medal given to the 3 position in any event is made up of:
    a) Gold              b) Silver                    c)      Bronze              d)     Brass
25) In the periodic table, the elements have been arranged in order of increasing:
    a) Atomic number b) Mass number                      c)      Chemical Reactivity d)     Melting
26) Which one of the following gases is used for respiration?
    a) Oxygen             b) Hydrogen                   c) Helium                  d)     Nitrogen
27) Which one of the following is a polar molecule?
    a) O2                  b) H2                         c) Cl2                     d)     H2O
28) Which one of the following elements is a good conductor of heat and electricity?
    a) Carbon             b) Hydrogen                   c) Chlorine                 d)    Copper
29) Which of the following substances is called proton donor?
    a) Acids               b)     Bases                     c) Salts                  d)     None of them
30) The chemical formula of sulphuric acid is:
    a) HCl               b) HNO3                       c) HSO4                    d)     H2SO4
31) The no. of moles of solute dissolved in 1 litre of solution is known as:
    a) Molarity           b) Molality                   c)      Solubility          d)    Normality
32) A formula that indicates the actual number and type of atoms in a molecule is called:
    a) Empirical formula b) Molecular formula             c) Formula mass            d)    Molecular mass
33) The formation of water from H2 and O2 is an example of:
    a) Exothermic reaction b) Endothermic reaction c) Neutralization reaction d) None of them
34) An ionic compound formed by the neutralization of an acid by a base is called:
    a) A base             b)     an acid               c) a salt                   d) an alkali
35) The no. of isomers of butane is
    a) 1                  b) 2                         c) 3                        d) 4
36) Mendeleev’s periodic table contains periods:
    a) 7                  b) 8                        c) 12                       d) 10
37) A co-ordinate covalent bond is always formed between the two:
    a) Like atoms        b) unlike atoms             c) similar atoms              d) like & unlike atoms
38) A human being consumes water about:
    a) 5 litres          b) 2 litres                 c) 1 litres                  d) 10 litres
39) The heaviest of the following particle is:
      a) Electron              b) Proton                   c) Neutron               d) Alpha particle
40)   44 a.m.u of CO2 is equal to:
      a) Molar mass            b) Atomic mass              c) Molecular mass        d) mass number
41)   The formula of Epsom salt is :
      a) Na2CO3               b) CuSO4.5H2O               c) MgSO4.7H2O            d) NaHCO3
42)   It is used in the shoe polish to provide shine to the shoes:
      a) Bee Wax              b) Sodium Hydroxide           c) Pearl ash           d) Soap
43)   The impure iron obtained from the blast furnace is known as:
      a) Cast iron            b) Pig iron                 c) Steel                d) Wrought iron
44)   The 1 member of alkene series is:
      a) Methane               b) Ethane                  c) Ethene                d) Ethyne
45)   The bond between hydrogen and Chlorine in HCl is:
      a) Ionic               b) Covalent                 c) Polar Covalent        d) Non Polar Covalent
46)   The non-crystalline form of sulphur is:
      a) Plastic Sulphur       b) Rhombic Sulphur            c) Monoclinic sulphur d) Ordinary sulphur
47)   The air we breathe in usually contains a higher proportion of :
      a) Nitrogen             b) Oxygen                   c) CO2                 d) Water Vapours
48)   China clay is used in making of:
      a) Glass                b) Electrical insulator      c) Ceramics             d) Crockery
49)   Which pair of the following molecules has the same no. of protons?
      a) O2 and N2            b) Cl2 and Br2               c) CH4 and NH3         d) CO2 and SO2
50)    The 1 synthetic organic compound is:
      a) Methane               b) Ethane                   c) Urea                d) Acetic acid
51)   When sulphur burns in oxygen , which one of the following gases is produced?
      a) SO2                 b) H2S                    c) CO2                       d) S2Cl2
52)   The quality of petrol is measured by:
      a) Cracking             b) Reforming              c) Octane number            d) Decane number
53)   Which of the following changes in respiration?
      a) Evaporation          b) Thermal decomposition c) Respiration               d) Melting
54)   Which of the pH of a neutral solution?
      a) 0                   b) 1                      c) 7                     d) 14
55)   Which one of the following substances contains covalent bonds but also conducts electricity?
      a) Sodium              b) Iron                    c) Copper                 d) Graphite
56)   Which one of the following is not isotope of hydrogen?
      a) 11H                 b) 21H                     c) 31H                   d) 41H
57)   China clay is used in making of:
      a) Grass                b) Electrical insulator c) Ceramics                 d) Crockeries
58)   How many molecules are there are there in 18 gm of water?
      a) 6.02x1023            b) 6.02x1022               c) 6.20x1022            d) 6.20x1023
59)   By which process does the smell of the cooked food spread in the surrounding?
      a) Distillation         b) Diffusion               c) Decomposition         d) Condensation
60) Which of the following ions has the same number of electrons as an argon atom of atomic
    number 18
    b) Na                    b) O2-                   c) K+                      d) N3-
61) A suspension of droplets of one liquid into another in which it is not soluble is called emulsion?
    c) Smoke                  b) Mud                  c) Foam                    d) Emulsion
62) The molecular formula of sand is
    a) SiO2                      b) SC                 c) S2O                     d) SO
63) Which one of the following is a compound?
    a) Air                   b) Carbon                c) Oxygen                   d) Steam
64) Which of the following compounds contains all the three chemical bonds i.e ionic, covalent and
    co-ordinate covalent bonds?
    a) CO2                   b) NaCl                  c) CH3COOH                  d) NH4Cl
65) Which of the following scientist suggested the symbols of the elements?
    a) John Dalton           b) J.J Thomson          c) J.J Berzellius           d) James Chadwick
66) A-Z indicates the no. of _________ in the nucleus?
    d) Proton               b) Neutron               c) Electron                 d) None of these
67) The rule of traid was introduced by:
    a) Dobriener            b) Newland               c) Dalton                   d) Mendeleev
68) The most common solvent is:
    a) Acid                 b) Salt                  c) Water                    d) Copper
69) 36 gm of water contain molecules:
    a) 12.04x1023           b) 12.05x1023            c) 12.4x1012                 d) 12.4x1113
70) In _______ Reaction heat is taken in?
    a) Combustion Reaction                                                       b)Exothermic reaction
    b) c) Neutralization reaction                                               d) Endothermic reaction
71) A interpretation of the results of common tests, which is a trial idea is called:
    a) Experiment           b) Hypothesis            c) Prediction               d) Theory
72) Which of the following molecule contain triple bond?
    a) H2                  b) O2                     c) Cl2                     d) N2
73) Which of the following elements will burn in oxygen to form a basic oxide?
    a) Sodium              b) Carbon                 c) Sulphur                 d) Phosphorus
74) If an element “X” forms an oxide with the formula “XO” which of the following chemical formula
    is correct?
    a) HCL                 b) XS                     c) XH3                      d) X2O
75) Ice cubes slowly vanish from their tray while store in a deep freezer this is an example of:
    a) Evaporation         b) Condensation           c) Melting                   d) Sublimation
76) The formula of baking soda is:
    a) NaHCO3              b) NaBO                   c) NH3.COOH                  d) Na2CO3
77) Bases are _________ acceptors?
    a) Electron            b Proton                  c) Neutron                   d) Alpha particle
78) The chemistry of hydrocarbon and their derivatives are called?
    a) Inorganic chemistry b) Physical Chemistry c) Applied chemistry d) Organic chemistry
79) ________ is called the father of modern chemistry?
    a) Jabir Bin Hayyan b) John Dalton                   c) Robert Boyle         d) J.J Berzellius
80) A suspension of particles of carbon in air is called:
    a) Smoke                 b) Mud                      c) Foam                 d) Emulsion
81) 5 moles of H2O are equal to:
    a) 80g                    b) 90g                      c) 100g                 d) 90 a.m.u
82) Ammonia gas is insoluble in:
    a) Carbon                 b) Coke                     c) Chlorine             d) Water
83) Plastic sulphur is:
    a) Hard               b) Soft                    c) Greasy                 d) Oily
84) Molten-iron on cooling changes into, it is an example of:
a) Sublimation            b) Melting                 c) Boiling                d) Freezing
85) The useful halogen is
    a) Bromine             b) Fluorine                c) Iodine                d) Chlorine
86) The vertical column of the periodic table are called:
    a) Alkali              b) Groups                    c) Periods               d) None of them
87) The pH of pure water is:
    a) 4                   b) 1                         c) 14                   d) 7
88) Chromite is found in Pakistan at:
    a) Sindh               b) Khyber Pakhtoon Khawa            c) Baluchistan    d) Punjab
89) The heat evolved or absorbed during a chemical reaction at constant pressure is called:
    a) Heat of reaction      b) Heat of neutralization c) Exothermic reaction d) none of these
90) Which particle is heaviest in the following?
    a) Electron           b) Proton                     c) Neutron               d) Beta Particles
91) Which of the following are good conductor of heat and electricity?
    a) Carbon                b) Chlorine                c) Zinc                  d) Neon
92) The phenomenon of gradual disappearance of naphtaline at room temperature is an example
    a) Evaporation          b) Condensation            c) Melting                d) Sublimation
93) The best disinfectant is
    a) Chlorine             b) Bromine                  c) Iodine                d) Calcium
94) Which of the following is polar molecule:
    a) H2                    b) O2                       c) H2O                    d) Cl2
95) K= C+___________
    a) KC                    b) 273                      c) 0                      d) 10
96) Acids are donators of=
    a) Electron              b) Proton                   c) Neutron                d) Water
97) All ______ have7 electron in their outermost shell:
    a) Alkali metals       b) Compounds            c) Halogens              d) Bromine family elements
98) The chemical formula of urea is:
    a) H2SO4                  b) U2O                     c) UH3                    d) NH3COHH2
99) The incomplete periodic table contained _______ periods:
   a)   7                    b) 6                         c) 3                    d) 1
100)         Neither definite shape nor volume is the property of:
   a)   Solid                b) Liquid                     c) Gas                 d) None of them
101)         The formula KAL(SO4)2 represents the total no. of elements is:
   a)   6                     b) 7                         c) 11                  d) 12
102)         The no. of common states of matter are:
   a)   5                      b) 4                         c) 3                  d) 6
103)         The S.I unit of time is ________
   a)   First                 b) Second                   c) Third                 d) Fourth
104)         Acid which is found in the stings of ants, wasps and bees?
   a)   Formic                b) Citric                   c) Nitric                d) Oxalic
105)         Ozone is an allotrope of:
   a)   Silicon               b) Carbon                   c) OZ                   d) Oxygen
106)         Sodium has ___ protons?
   a)   55                     b) 11                      c) 22                    d) 25
107)         Diamond and graphite and _____ are the crystalline forms of carbon?
   a)   Coke                   b) Bucky balls             c) Coal                  d) Charcoal
108)         Which of the following elements will burn in oxygen to form an acidic oxide:
   a)   Sodium                 b) Potassium              c) Carbon                 d) Calcium
109)         Which of the molecules contains double covalent bond:
   a)   NH3                    b) CO2                    c) HCL                    d) H2O
110)         The atomic mass of chlorine is 35.5, what is the mass of the 2 moles of chlorine gas:
   a)   142 gm                b) 71 gm                   c) 35.5                   d) 2gm
111)         How many elements are there in the 3 period of the periodic table?
   a)   2                     b) 8                       c) 18                     d) 32
112)         Which of the following in an alkyl groups:
   a)   C6H15                 b) C6H14                   c) C6H13                  d) C6H12
113)         The S.I unit of the quantity of matter in a body its called is:
   a)   Mole                   b) Molecular mass          c) Formula mass         d) Atomic mass
114)         In a molecule of heptanes , there are ____ hydrogen atoms:
   a)   15                     b) 17                      c) 16                    d) 21
115)         The process which keeps the earth warm is known as________ effect:
   a)   Green house           b) White house          c) Earth house           d) Temperature house
116)         Ionic and polar solutes tend to dissolve in ________ solvents:
   a)   Non-Polar             b) Circle polar              c) water              d) Polar
117)         Acetic acid is found in:
   a)   Hydrochloric acid b) Vinegar                  c) Water                d) Sodium bi-carbonate
118)         The formula of chlorine is:
   a)   Cl                     b) Cl-                      c) Cl+                d) Cl2
119)         What type of bonding is found in CH4 molecule:
   a)   Covalent Bond            b) Hydrogen Bond               c) Ionic Bond        d) Double Bond
120)         One angstrom (A) = A-10 m:
   a) 10-8                  b) 10-9                     c) 10-10            d) 10-11
121)       There are ____ elements in the 6th period:
   a) 2                     b) 8                        c) 16               d) 32
122)       The formula of AL2(SO4)3 represents a total no. of ________ atoms:
   a) 7                     b) 13                        c) 17               d) 19

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