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MCQs

Total Questions : 1913 | Page 191 of 192 pages
Question 1901. The atomic weight of helium is 4 times that of hydrogen. Its diffusion rate as compared to hydrogen will be _____________ times?
  1.    1/2
  2.    4
  3.    √2
  4.    1/4
 Discuss Question
Answer: Option C. -> √2
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 1902. _________________ chart is a graph related to Antoine equation ?
  1.    Ostwald
  2.    Cox
  3.    Mollier’s
  4.    Enthalpy-concentration
 Discuss Question
Answer: Option B. -> Cox
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 1903. Clausius Clapeyron equation applies to the _____________ process?
  1.    Sublimation
  2.    Melting
  3.    Vaporisation
  4.    All A., B. & C.
 Discuss Question
Answer: Option D. -> All A., B. & C.
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 1904. 80 kg of Na2SO4 (molecular weight = 142) is present in 330 kg of an aqueous solution. The solution is cooled such that. 80 kg of Na2SO4 .10H2O crystals separate out. The weight fraction of Na2SO4 in the remaining solution is_________________?
  1.    0.00
  2.    0.18
  3.    0.24
  4.    1.00
 Discuss Question
Answer: Option B. -> 0.18
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 1905. The viscosity of water at room temperature may be around one ___________________?
  1.    Centipoise
  2.    Poise
  3.    Stoke
  4.    Both B. & C.
 Discuss Question
Answer: Option A. -> Centipoise
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 1906. On mixing 56 gm of CaO with 63 gm of HNO3, the amount of Ca(NO3)2 formed is ______________ gm?
  1.    82
  2.    164
  3.    41
  4.    8.2
 Discuss Question
Answer: Option A. -> 82
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 1907. Air at a temperature of 20°C and 750 mm Hg pressure has a relative humidity of 80%. What is its percentage humidity? Vapour pressure of water at 20°C is 17.5 mm Hg?
  1.    80.38
  2.    80
  3.    79.62
  4.    78.51
 Discuss Question
Answer: Option C. -> 79.62
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 1908. Atmospheric pressure corresponds to a hydrostatic head of_________________?
  1.    13.6 cms of Hg
  2.    34 ft ofH2O
  3.    1 metre of H2O
  4.    13.6 metres of Hg
 Discuss Question
Answer: Option B. -> 34 ft ofH2O
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 1909. The density of a gas ‘X’ is twice that of another gas ‘Y’. If the molecular weight of gas ‘Y’ is ‘M’; then the molecular weight of the gas ‘X’ will be________________?
  1.    2M
  2.    M/2
  3.    M
  4.    M/4
 Discuss Question
Answer: Option A. -> 2M
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 1910. Na2SO4. 10H2O crystals are formed by cooling 100 Kg of 30% by weight aqueous solution of Na2SO4. The final concentration of the solute in the solution is 10%. The weight of crystals is________________?
  1.    20
  2.    32.2
  3.    45.35
  4.    58.65
 Discuss Question
Answer: Option D. -> 58.65
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!

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