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ECAT 2013 MATH

Posted by: Unknown Posted date: 13:33 / comment : 0 , ,



Note:Please write the answer in comment box.It will help us a lot in finding answer of these questions.
1) (1+cosx)/sinx+sinx/(1+cosx) equal to
a) 2/sinx
b) tan2x
c) sec2x
d) None


2) The Function y=3x-x2 for x≧ 0 has a maximum value at
a) 1,2
b) 2,1
c) 3,4
d) 2,2


3) How many arrangments of the letters of FASTING can be made?
a) 5040
b) 2045
c) 2520
d) None


4) n2!/(n-1)!(n-2)!
a) n
b) n2
c) n3-n2
d) None


5) log9y+log3y= 3
a) 9
b) 27
c) 3
d) None


6) 3 ∫ 2 (x3+2x2+1)dx
a) 15
b) 25
c) 35
d) None


7) the coefficient of x in the expansion of ( 1 - 2x )n is -8 then the coefficient of x2 will be
a) 24
b) 24x2
c) 48
d) 48x2


8) 9x2+kx+36=(3x+n)2 value of k-n?
a)
b)
c)
d)


9) A line X=Y+2 intersects at Y2=XY-1...coordinates of points of intersection are:
a) (0.5,2.5)
b) (2,0.5)
c) (2.5,0.5)
d) (2,1)


10) Find Solution Of Equations 2x-y-4,2x2-4xy-y2
a)
b)
c)
d)


11) ∏ /2 x ∫ (siny+2)dy ?
a) 0
b) 1
c) ∏ +1
d) None


12) if x=sin Θ then find cos Θ
a) ∓ √ 1-x2
b) ∓ √ 1+x2
c) ∓ √ 1+x
d) None


13) esin(5-2x) difrentiation
a) -2cos esin(5-2x)
b) 2cos esin(5-2x)
c) 2cosec esin(5-2x)
d) 2sec esin(5-2x)


14) Expand upto 2 terms (2.02)4 binomial theorem through
a) 16.44
b) 0.644
c) 6.44
d) None


ECAT 2013 PHYSICS

Posted by: Unknown Posted date: 13:04 / comment : 0 , ,



Note:-Please write the answer in comment box it will help us a lot in finding answer of these questions.

1) If Thermistor Is Placed In Oven If Temp Of oven Is Increased Then resistance will be
a) Increases
b) Decreases
c) Remains same
d) None


2) A Body is accelerating downward with 9.8ms-2. If we throw it with some force, then acceleration will be:
a) More than 9.8
b) Less than 9.8
c) Equal
d) None


3) To Increase Charging of Capacitor
a) Resistance Decrease
b) Capacitance Increases
c) Fixed Capacitance
d) None


4) The Angular Frequency Of A Pendulum Is 1 Rad/sec Its Length Will Be :
a) 24m
b) 9.8m
c) 3.98m
d) None


5) If 1 micro coulumb charge is pass through wire in 1 micro second then current will be
a) lA
b) 1uA
c) 1mA
d) None


6) Orbital speed of stallites going around the earth increased if the distance from earth is......
a) increased
b) Decreased
c) Remains same
d) None


7) a helicopter is ascending vertically at the rate of 19.6ms-1 when it is at a height of 156.8m above the ground.how long the stone takes to reach the ground(Hint:1st year 3rd Ch#1st numerical)?
a) 8 sec
b) 4 sec
c) 2 sec
d) None


8) Tesla is a unit of magnetic field is equal to ....?
a) Nm/A
b) NmA
c) N/Am
d) None


9) voltage-current graph of non ohmic device is......
a) straight line
b) linear
c) Parabola
d) Hyberbola


10) Ameter is a galvanometer with a
a) high resistance connected in parallel
b) low resistance connected in parallel
c) high resistance connected in series
d) low resistance connected in series


11) 100 kg mass 100m radius 36ms-1 speed centripetal force
a) 10N
b) 100N
c) 1000N
d) None


12) if power of body is 10 Js-1 then energy of body is
a) 1J
b) 10J
c) 100J
d) 1000J


13) a train travelling a sounds a whistle of frequency 5270hz.frequency of sound heard by the driver was
a) 5270
b) more than 5270
c) less than 5270
d) None


14) when we tune a radio that means
a) capacitance changes
b) inductance changes
c) resistance changes
d) None


14) when we tune a radio that means
a) capacitance changes
b) inductance changes
c) resistance changes
d) None


15) the direction of induced current is always so as to oppose the change which causes the current
a) Lenz law
b) Faraday law
c) coulomb's law
d) None


16) Milkians method is used to determine?
a) e/m of electron
b) Charge on electron
c) Mass of electron
d) None


17) if three resistances R connected in parallel thier equivalent resistance is
a) R/3
b) 9R
c) 3R
d) None


18) if three resistances r connected in series Then thier equivalent resistance is
a) 3R
b) 9R
c) 9/R
d) 3/R


19) Voltmeter is a device which have
a) high internal resistance
b) low internal resistance
c) No internal resistance
d) None

INTRODUCTION TO PHYSICS(TEST-4)

Posted by: Unknown Posted date: 12:44 / comment : 0 ,

            INTRODUCTION TO PHYSICS

PHYSICS

TEST-4


121. The branch of physics deals with study of production propagation & properties of sound waves is  called  
a)   Magnetic     
b)   Optics  
c)   Statics     
d)   Acoustics


122.  If 0.61 is added to 167 with due regard to significant figures, then we get: 
a)   168       
b)   167  
c)   167.61     
d)   167.6


123. High energy physics deal with the 
a)   Study of electron behavior   
b)   Study of electron charge  
c)   Study of mechanics of energetic bodies  
d)   Study of properties and behavior of  elementary particles


124. Which one of the following Muslim scientists has made a significant contribution to the study of  alchemy 
a)   Jabir Bin Hayyan    
b)   Abu Abdullah Muhammad  
c)   Ibn-al-Haitham    
d)   Ibn-e-Sina


125. The book “Kitab-ul-Qanoon-ul-Masoodi” was written by 
a)   Ibn-e-Sina     
b)   Al-Razi   
c)   Abu-Rehan Al-Beruni    
d)   Ibn-al-Haitham


126. The first book on analytical “Hisab-ul-Jabrwal-Moqabl” was written by 
a)   Al-Khawarzami    
b)   Al-Beruni  
c)   Al-Razi     
d)   Ibn-e-Sina


127. “Kitab-ul-Manazir” the famous book on optics is written by 
a)   Ibn-e-Sina     
b)   Al-Khawrzimi  
c)   Jabir-bin-Hayyan    
d)   Ibn-ul-Haitham


128. In international system of units, the unit of length, mass, time, electric current, temperature, intensity  of light and quantity of light and quantity are called 
a)   Derived     
b)   Basic  
c)   Fundamental 
d)   Only b & c


129.  The number of significant figures in 0.098000 is: 
a)   4       
b)   2  
c)   3      
d)   6


130. 1 degree is equal to _______ radians:  
a)   0.0245     
b)   0.0561  
c)   3.1423     
d)   0.0174


131. The famous mathematician & the founder of algebra was 
a)   Al-Kindi     
b)   Al-Khwarizmi  
c)   Al-Beruni     
d)   Naseruddin Tusi


132. 10-9 second are equivalent to: 
a)   Deci second     
b)   Nano second  
c)   Milli second     
d)   Micro second


133. The standard of time in SI system is the clock of: 
a)   Uranium     
b)   Rubidium  
c)   Cesium     
d)   Radium


134. One Angstrom equals  
a)   10-8 cm     
b)   108 m  
c)   10-6 m     
d)   108 mm


135. 10 Giga hertz is equivalent to  
a)   1010 Hz     
b)   109 Hz  
c)   107 Hz     
d)   10-10 Hz


136. Which of the following is the unit of electrical energy? 
a)   Kg m/s2     
b)   Dyne  
c)   Kw-hr     
d)   Joules / sec


137.  One Newton is equal to: 
a)   102 dynes      
b)   103 dynes   
c)   104 dynes      
d)   105 dynes


138. The unit of dimensions of which of the following pairs of physical quantities are identical? 
a)   Impulse and Momentum   
b)   Stress and Strain  
c)   Pressure and Density    
d)   Gravitational potential and Energy


139. The dimensions of impulse are the same as that of: 
a) Energy  
b) Work  
c) Power   
d) Momentum


140. 0.0084 has _______ significant figures  
a)   2      
b)   4  
c)   5      
d)   1


141. The _______ sciences deal with the properties and behavior of non-living things: 
a)   Natural     
b)   Social  
c)   Physical     
d)   Biological


142. The people of _______ were the pioneers of decimal system: 
a)   China     
b)   Indus valley  
c)   Euphrates     
d)   Egypt


143. Physics is the quantitative science based primarily on: 
a)   Definition     
b)   Experiment and measurement  
c)   Hypothesis     
d)   A collection of skills


144. The branch  of science, which deals with the interaction of matter and energy, is called:  
a)   Chemistry     
b)   Mathematics  
c)   Statistics     
d)   Physics


145. Some concepts of static electricity were introduced by: 
a)   Greeks     
b)   Chinese  
c)   Thales     
d)   Einstein


146. The theory which modified the Newton’s laws of motion for describing the bodies moving with  speed comparable with the speed of light is: 
a)   Electromagnetic Theory   
b)   Faraday’ laws  
c)   Theory of relativity    
d)   Collision theory


147. Astrophysics deals with: 
a)   Particles in space    
b)   Elementary particles  
c)   Neutrons Protons    
d)   Electrons


148. Physics is the Science based on: 
a)   Interaction between matter and energy  
b)   Energy of the material  
c)   Mass of the material    
d)   Neither energy nor matter


149. The branch of sciences which deals with the properties of matter and energy along with the  interaction between them is known as:  
a)   Geography     
b)   Geology  
c)   Biology     
d)   Physics


150. One micro second is: 
a)   10-6 sec     
b)   10-9 sec  
c)   106 sec     
d)   10-3 sec



CORRECT ANSWER


Question
Answers
121.
D
122.
C
123
D
124
A
125
C
126
A
127
D
128
D
129
B
130
D

Question
Answers
131
B
132
B
133
C
134
A
135
A
136
C
137
D
138
A
139
D
140
A

Question
Answers
141
C
142
B
143
B
144
D
145
C
146
C
147
A
148
A
149
D
150
A

PHYSICS

Posted by: Unknown Posted date: 12:31 / comment : 0


PHYSICS

1).Measurement



2).Vectors & Equilibrium



 3).Motion & Force

  • Part-1
  • Part-2
  • Part-3


4).Work & Energy



5).Circular Motion

  • Part-1
  • Part-2
  • Part-3


6).Fluid Dynamics

  • Part-1
  • Part-2
  • Part-3


7).Oscillations

  • Part-1
  • Part-2
  • Part-3


8).Waves

  • Part-1
  • Part-2
  • Part-3


9).Physical Optics

  • Part-1
  • Part-2
  • Part-3


10).Optical Instrument

  • Part-1
  • Part-2
  • Part-3


11).Heat & Thermodynamics



 12).Electrostatic

  • Part-1
  • Part-2
  • Part-3


13).Current Electricity

  • Part-1
  • Part-2
  • Part-3


14).Electromagnetism

  • Part-1
  • Part-2
  • Part-3


15).Electromagnetic Induction

  • Part-1
  • Part-2
  • Part-3


16).Alternating Current

  • Part-1
  • Part-2
  • Part-3


17).Physics of Solid

  • Part-1
  • Part-2
  • Part-3


18).Electronics

  • Part-1
  • Part-2
  • Part-3


19).Dawn of Modern Physics



20).Atomic Spectra

  • Part-1
  • Part-2
  • Part-3


21).Nuclear Physics

  • Part-1
  • Part-2
  • Part-3


CONCEPTUAL MCQ's BIOLOGY

Posted by: Unknown Posted date: 21:07 / comment : 0 ,


CONCEPTUAL MCQ's BIOLOGY

SESSION#1

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