Q. work function is generally expressed in
A) electron volt
B) joule
C) newton
D) gauss
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. 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
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 land of midnight sun is
A) Norway
B) Italy
C)  Russia
D) Belgium
Q. The highest waterfall of the world is in
B) Canada
C)  Venezuela
D)  Russia
Q. early vedic Aryans did not know the use of which of the following metals
A)  iron  
B) bronze  
C)  copper  
D)  gold
Q. Mosquito repellents contain mainly :
A) calcium dihydrogen phosphate  
B)  potassium hydrogen phosphate  
C) sodium hydrogen sulphate  
D) ammonium bicarbonate
Q. The highest peak in Australia is
A) Mt. Ossa  
B)  Mt. Woodroppe  
C)  Mt. Bruce  
D) Mt. Kosciuska
Q. An ideal gas engine operates in a carnot cycle. it absorbs heat at a temperature T1 and exhaust heat at T2. the efficiency of this engine is
A) (T1-T2)/T1
B) (T1+T2)/T1
C) (T1-T2)/T2
D) T1/T2
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
4 members solved
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