Q. what is the SI unit of Young modulus of elasticity
A) dyne/cm
B) newton/m
C) newton/m2
D) m2/s
Q. Plants that grow in seashores are called as :
A) Halophytes  
B) Hydrophytes  
C)  Xerophytes  
D) Psammophytes
Q. Ammonia gas is used as a coolant in
A)  air cooler  
B)  air conditioners  
C) refrigerators  
D) water heaters
Q. The land of midnight sun is
A) Norway
B) Italy
C)  Russia
D) Belgium
Q. Tea will cool most easily in :
A) glass cup  
B) metal cup
C) clay cup  
D) porcelain cup
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. 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. The highest waterfall of the world is in
A) USA
B) Canada
C)  Venezuela
D)  Russia
Q. an electron moves with a constant velocity V parallel to the direction of uniform magnetic field B. the force experienced by the electron is
A) BeV
B) eV/B
C) B/eV
D) zero  
Q. work function is generally expressed in
A) electron volt
B) joule
C) newton
D) gauss
Today Challenging Question
Q. If a boat is moving in upstream with velocity of 14 km/hr and goes downstream with a velocity of 40 km/hr, then what is the speed of the stream ?
A) 13 km/hr
B) 26 km/hr
C) 34 km/hr
D) none of these
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