Wednesday 6 July 2016

first year chemistry notes chap#1 lahore board



ACADEMY FOR EXCELLENCE LHR
Chemistry-1st 09-10 Ch# 1  (C , E)                                            Paper: Complete Without Prob of Exercise                                               Total Marks: 20
Name: ______________________________________________________Sec: ______________Roll: _________________
A.         Choose the correct answer
1.            Atoms of which gas can exist independently  
                                a. O2                                       b. CO2                    c. Ar                       d. N2
2.            There are many examples of anions having group of atoms like
                                a. PO(3–)4                                   b. Cl(–)                       c. P(–)                         d. S(–2)
3.            Carbon is used as standard reference for relative atomic mass due to
                                a. unstability of carbon                                b. stability of carbon
                                c. abundance of carbon compounds      d. both b + c
4.            Which of the following statement is true for mass spectrometer
a. It uses liquid molecules in magnetic field
b. Magnetic field supply the voltage to vapours
c. It separates Ions according to their mass only
d. All Statements are wrong
5.            By combustion analysis, only those organic compounds can be analyzed which simply contain
                                a. C , S , N                             b. C , H , O            c. C , H , N            d. S , H , O
6.            Which statement about molar volume is true?
                                a. it is denoted  by Vm   b. It is applicable only to an ideal gas
                                c. normally in gases, one molecule is about 300 times at a greater distance
                                  than its own diameter
d. All are true
7.            The mass of one mole of electrons is
                                a. 1.008 mg                        b. 0.55 mg                           c. 0.184 mg        d. 1.673 mg
8.            The number of moles of CO2, which contain 8.0 g of oxygen
                                a. 0.25                                  b. 0.50  c. 1.0                     d. 1.50
9.            One mole of SO2 contains
                                a. 6.02 x 1023 atoms of oxygen b. 18.1 x 1023molecules of SO­2
                                c. 2 x 6.0223 atoms of sulphur    d. 2 x 6.0223 atoms of oxygen
10.          One atom mass unit is equal to
                                a. 1.66 x 10–27 kg              b. 1.66 x 10–27 g                c. 1.66 x 10–24 g                d. Both a + c



Give Short Questions                                                                                                                                                              
a). Why we use limiting reactant deliberately
B). What is Gram molecule. Give two examples
Q#2.     Explain in detail mass spectrometry
Posted by at No comments:

chemistry first year past paper and notes lahore board 2016



               Academy for excellence Lahore
Chemistry-1st 09-10 Ch# 3   (B)                                                 Paper: From Start to Before General Gas Equation      

A.         Choose the correct answer
1.            1 atmospheric pressure is equal to
                                a.760 torr                           b. 101325 kilopascal                     c. 760 Nm–2        d. 760 Cm Hg
2.             =  it is the statement of
                                a. Boyle’s law                    b. Charles law                                   c. Avogadro’s law           d. Dalton’s law
3.            Isotherm is obtained by plotting the graph b/w
a. V and T                           b. V and n                                            c. V and P                            d. All
4.            Which law is valid in only absolute scale
                                a. Boyle’s law                    b. Avogadro’s law                           c. Charle’s law                  d. Dalton’s law
5.            General equation to know volume of gas at various temperature is
                                a.V0 = Vt (1 + )             b. Vt = V0 ( 1 +  )                          c. Vt = V0 (1 –            
d.  Vt = V0 (1 + 
6.            When we say in Kelvin scale, 273 K is M.P of ice, then pressure should be
                                a. 2 atmosphere               b. 4 atmosphere               c. 3 atmosphere               d. 1 atmosphere
7.            Which of the following is correct one
a. K = C0 –273                    b. C0 =  (F0 – 32)             c. F0 =  (C0) + 32             d. Both b + c
8.            S.I unit of pressure is
                                a. torr                                   b. mm Hg                            c. Nm–2                                 d. Pounds inch–2
9.            Which of the following gas diffuse more rapidly
                                a. O2                                       b. N2                                      c. SO2                                     d. Cl2
10.          Matter having No definite shape and volume called
                                a. Gas                                    b. Liquid                              c. Solid                                                 d. Plasma



Give Short Questions                                                                                                                                                              
a). What is Joule Thomson effect                                                                                                                                            2
b). Define Boyle’s law                                                                                                                                                                  2
c). 250 cm3 of Hydrogen is cooled from 127 C0 to –27 C0 by maintaining the pressure constant. Calculate the
      new volume of gas at low temperature                                                                                                                          3
d). Define absolute zero. Give graphical explanation                                                                                                     3






Tameer-e-Nau Academy Taunsa Sharif
Chemistry-1st 09-10 Ch# 3   (B)                                                                        Paper: From Start to Before General Gas Equation      Total Marks: 20
Name: ______________________________________________________Sec: ______________Roll: _________________
A.         Choose the correct answer
1.            1 atmospheric pressure is equal to
                                a.760 torr                           b. 101325 kilopascal                     c. 760 Nm–2        d. 760 Cm Hg
2.            When we say in Kelvin scale, 273 K is M.P of ice, then pressure should be
                                a. 2 atmosphere               b. 4 atmosphere               c. 3 atmosphere               d. 1 atmosphere
3.             =  it is the statement of
                                a. Boyle’s law                    b. Charles law                                   c. Avogadro’s law           d. Dalton’s law
4.            Isotherm is obtained by plotting the graph b/w
a. V and T                           b. V and n                                            c. V and P                            d. All
5.            Which law is valid in only absolute scale
                                a. Boyle’s law                    b. Avogadro’s law                           c. Charle’s law                  d. Dalton’s law
6.            S.I unit of pressure is
                                a. torr                                   b. mm Hg                            c. Nm–2                                 d. Pounds inch–2
7.            Which of the following is correct one
a. K = C0 –273                    b. C0 =  (F0 – 32)             c. F0 =  (C0) + 32             d. Both b + c
8.            General equation to know volume of gas at various temperature is
                                a.V0 = Vt (1 + )             b. Vt = V0 ( 1 +  )                          c. Vt = V0 (1 –            
d.  Vt = V0 (1 + 
9.            Which of the following gas diffuse more rapidly
                                a. O2                                       b. N2                                      c. SO2                                     d. Cl2
10.          Matter having No definite shape and volume called
                                a. Gas                                    b. Liquid                              c. Solid                                                 d. Plasma



Give Short Questions                                                                                                                                                              
a). What is Joule Thomson effect                                                                                                                                            2
b). Define Boyle’s law                                                                                                                                                                  2
c). 250 cm3 of Hydrogen is cooled from 127 C0 to –27 C0 by maintaining the pressure constant. Calculate the
      new volume of gas at low temperature                                                                                                                          3
d). Define absolute zero. Give graphical explanation                                                                                                     3

Posted by at No comments:
Subscribe to: Posts (Atom)