Class XI

1 mole of a monoatomic gas is mixed with 3 moles of a diatomic gas. What is the molecular specific heat of the mixture at constant volume?
  1. 22.6 J / mol K
  2. 12.5 J / mol K
  3. 18.7 J / mol K
  4. 15.2 J / mol K
Vectors can be added by
  1. adding the angles of the vectors
  2. parallelogram law of addition
  3. adding the magnitudes of the vectors
  4. translating the two vectors
Which of the following can determine the acceleration of a moving object ?
  1. area of velocity-time graph
  2. slope of velocity-time graph
  3. area of distance-time graph
  4. slope of the distance time-graph
Two moles of an ideal gas (γ=1.4γ=1.4) expands slowly and adiabatically from a pressure of 5.00 atm and a volume of 12.0 L to a final volume of 30.0 L. What are the initial and final temperatures?
  1. 366 K, 253 K
  2. 406 K, 273 K
  3. 346 K, 243 K
  4. 386 K, 263 K
Estimate the average thermal energy of a helium atom at room temperature (27 ∘∘C)
  1. 6.2 ×× 10−2110−21 J
  2. 6.4 ×× 10−2110−21 J
  3. 6.0 ×× 10−2110−21 J
  4. 5.7 ×× 10−2110−21 J
Time Elapsed

HR : MIN : SEC
Question Answered
0
Score out of 100
0

Get Started!

we provide the best
services to our students

AmazingCounters.com Views

 

LKG - 12th

Rs 1,999  Annual
Plan
TOP