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TLS Online TPP Program

#Question id: 1086

What is the most likely mechanism by which testosterone functions inside a cell?

#XL - Q Biochemistry

  1. It acts as a signal receptor that activates tyrosine kinases.

  2. It binds with a receptor protein that enters the nucleus and activates expression of specific genes.

  3. It acts as a steroid signal receptor that activates ion channel proteins in the plasma membrane.

  4. It coordinates a phosphorylation cascade that reduces spermatogenesis.

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TLS Online TPP Program

#Question id: 20244

#XL - P Chemistry

Choose the incorrect statement.
TLS Online TPP Program

#Question id: 20245

#XL - P Chemistry

Which of the following is not paramagnetic ?
TLS Online TPP Program

#Question id: 20246

#XL - P Chemistry

Which one of the following compound has sp2 hybridization ?
TLS Online TPP Program

#Question id: 20247

#XL - P Chemistry

C2H6 (g) + 3.5 O2 (g) →2CO2 (g) + 3H2O (g)
ΔSvap (H2O, l) = x1 cal K–1 (boiling point + T1)
ΔHf (H2O, l) = x2
ΔHf (CO2) = x3
ΔHf (C2H6) = x4
Hence ΔH for the reaction is –
TLS Online TPP Program

#Question id: 20248

#XL - P Chemistry

C (s) + O2 (g) →CO2, (g); DH = –94.3 kcal/mol
CO (g) + O2(g) → CO2 (g); DH = – 67.4 kcal/mol
O2(g) → 2O (g); ΔH = 117.4 kcal/mol
CO (g) → C (g) + O(g) ; ΔH = 230.6 kcal/mol
Calculate ΔH for C (s) → C (g) in kcal/mol.
TLS Online TPP Program

#Question id: 20249

#XL - P Chemistry

The difference between ΔH and ΔE on a molar basis for the combustion of n–octane at 25°C would be : 25ºC