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6. How many meters is equal to 1 nano meter? (NTSE Gujarat, Stage-I, 2015-16)
10-9 meters
10-10 meters
109 meters
1010 meters
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7. Which fundamental particles did Chadwick invent in 1932? (NTSE Gujarat, Stage-I, 2015-16)
Electron
Proton
Neutron
All of these
8. Which branch of science is associated with the use of X- ray and gamma rays for the diagnosis and treatment? (NTSE Gujarat, Stage-I, 2015-16)
Urology
Radiology
Histology
Pathology
9. Three blocks of masses m1, m2 and m3 are at temperatures θ1, θ2 and θ3 respectively. Assuming all of same metal and there is no loss of heat to surroundings find the equilibrium temperature (θ) if all the three are brought in contact (c = sp heat of metal) (NTSE Haryana, Stage-I, 2015-16)
10. A calorimeter contains ice. The energy of 500 calories is required, to heat the system from 270 K to 272 K and energy of 16600 calories is required to heat that system from 272 K to 274 K. The heat capacity is defined as the product of mass of the object and its specific heat. The specific heat of ice is 0.5 cal/gram-K. The heat capacity of calorimeter is (NTSE Andhra Pradesh, Stage-I, 2015-16)
150 cal/K
100 cal/K
120 cal/K
180 cal/K
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