Q. mass spectrograph determines
A) spectrum of light
B) charge of the ion
C) specific charge of the positive rays
D) specific charge of the cathode rays
Q. The manifestation of band structure in solids is a consequence of
A) Pauli's exclusion principle
B) Heisenberg's uncertainity principle
C) Bohr's principle  
D) Ohm's law
Q. the potential energy associated with an electron in the orbit
A) increases with increase in radii of orbit
B) decreases with increase in radii of orbit
C) remains unchanged with the change in radii of the orbit
D) none of these
Q. work function is generally expressed in
A) electron volt
B) joule
C) newton
D) gauss
Q. A disc shaped magnet levitage above a superconducting material that has been cooled by liquid nitrogen. this happens because a superconductor is
A) Diamagnetic
B) Nonmagnetic
C) paramagnetic
D) Ferromagnetic
Q. an electric or magnetic field cannot accelerate
A) electrons
B) protons
C) neutrons
D) alpha particles
Q. the most suitable unit for expressing nuclear radius is
A) micron
B) nanometer
C) Fermi
D) angstrom
Q. ten years ago ram was thrice as old as shyam was but 10 years hence he will be only twice as old. what is ram's present age
A) 60
B) 65
C) 68
D) 70
Q. Boundary line between Pakistan and India
 
A)  Radcliffe line  
B) Durand line  
C) Maginot line  
D) McMahon line
Q. Worker W produces n units in 5 hours. Workers V and W, workers independently but at the same time, produce n units in 2 hours. how long would it take V alone to produce n units?
A) 1 hr 26 min
B) 2 hr 30 min
C) 3 hr 30 min
D) 3 hr 20 min
Today Challenging Question
Q. the present ages of A and B are 2:5. nine years ago their ages were in the ratio 1:4. find the present age of A
A) 18
B) 20
C) 22
D) 24
2 members solved
© Copyright 2016 EQANS