Page 14 - ECAT Past Paper 2006

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A) CO2 B) NH3
C) SO2 D) N2
Q.64 Which is an amorphous solid?
A) NaCl B) NaOH
C) Diamond D) Rubber
Q.65 In liquids, intermolecular forces are;
A) Very weak B) Very strong
C) Reasonable strong D) Ion-dipole force
Q.66 When spectrum of hydrogen atom is taken in magnetic field, some new lines are created.
This is called;
A) Resonance effect B) Stark effect
C) Zeeman’s effect D) Electric effect
Q.67 Triangular planer structure is obtained in ______ hybridization;
A) SP B) SP2
C) SP3 D) None
Q.68 The bond angel depends upon;
A) Types of bonds B) Number of bonds
C) Non bonding electron pairs D) All of the above
Q.69 Which is not a state function?
A) Temperature B) Enthalpy
C) Internal energy D) Change in temperature E.
-3
Q.70 The pH of 10 moles/dm of an aqueous solution of H2SO4 is
3
A) 2.7 B) 3
C) 2.0 D) 1.5
Q.71 The sum of the mole fraction of the components of a mixture is equal to;
A) 100 B) 200
C) 0 D) 1
Q.72 NaOH is obtained by electrolysis of conc. Aqueous solution of NaCl in a cell is called;
A) Daniel cell B) Nelson cell
C) Down’s cell D) Voltaic cell
Q.73 The rate of reaction ____ as the reaction proceeds;
A) Increases B) Decreases
C) Remains same D) May increase, may decrease
Q.74 Which statement is incorrect?
A) All the metals are good conductors of electricity. B) All the metals are good
conductors of heat.
C) All the metals form positive ions. D) All the metals form acidic
oxides.
Q.75 The mineral CaSO4.2H2O has the general name;
A) Gypsum B) Dolomite
C) Calcite D) Epsum salt
Q.76 Aluminium oxide is;
A) Acidic oxide B) Amphoteric oxide
C) Basic oxide D) None
Q.77 Laughing gas is chemically;
A) NO B) N2O
C) NO2 D) N2O4
Q.78 Hydrogen bond is strongest b/w the molecules of;
A) HF B) HCl
C) HBr D) HI
Q.79 Which of the following is a typical transition metal?
A) SC B) Y
C) Ra D) Co
Q.80 Ether shows the phenomenon of;