Download App

STD 11 - 5. Thermodynamics and thermochemistry — NEET STD 11 Science — Question

Gujarat BoardEnglish MediumSTD 11 ScienceNEETSTD 11 - 5. Thermodynamics and thermochemistry4 Marks
MCQ
Which of the following relation is not correct?
  • ✓
    $\Delta H =\Delta U - P \Delta V$
  • B
    $\Delta U = q + W$
  • C
    $\Delta S _{ syz }+\Delta S _{ suxr } \geq 0$
  • D
    $\Delta G =\Delta H - T \Delta S$
✓

Answer

Correct option: A.
$\Delta H =\Delta U - P \Delta V$
a
If $U + P _{ V }$ (By definition)

$\Delta 14=\Delta U +\Delta( Pr )$ at constant pressure

$\Delta H =\Delta U + P \Delta V$

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Explore more

NEET STD 11 Science question papers→Gujarat Board STD 11 Science question papers→Gujarat Board question paper generator→

Similar questions

Pyruvic acid is obtained by
→
In Kjeldahl's method for the estimation of nitrogen, the formula used is
→
The concentration in gms per litre of a solution of cane sugar $(M = 342)$ which is isotonic with a solution containing $6\,gms$ of urea $(M = 60)$ per litre is
→
In the reaction $SnC{l_2} + 2C{l^ - } \to SnC{l_4},$ Lewis acid is
→
$\begin{array}{*{20}{c}}
  {\,\,\,C{H_3}\,\,\,\,\,\,} \\ 
  {|\,\,\,\,\,\,\,\,\,\,\,\,} \\ 
  {C{H_3} - C - O - C{H_3}} \\ 
  {|\,\,\,\,\,\,\,\,\,\,\,\,} \\ 
  {\,\,\,\,C{H_3}\,\,\,\,\,\,} 
\end{array}$ $\xrightarrow{{Conc.HI}}$ 

Type of reaction in above reaction is

→
For $\alpha - $amino acids having the structure$R - \mathop {\mathop {CH - }\limits_{|\,\,\,\,\,\,\,\,\,} }\limits_{N{H_2}\,\,} C{O_2}H$ Which of the following statements are true

(a) Water solubility is maximum at a $pH$ when concentrations of anions and cations are equal

(b) They give ninhydrin test

(c) On reacting with nitrous acid give off ${N_2}$

→
Which of the following is a not cyclic oxyacid?
→
The $IUPAC$ name of $\begin{array}{*{20}{c}}
  {CH - C - O - C{H_2} - C - OH} \\ 
  {||\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,||} \\ 
  {O\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,O} 
\end{array}$ is :
→
Order of Covalent bond;

$A.$ $KF > KI ; LiF > KF$

$B.$ $KF < KI ; LiF > KF$

$C.$ $SnCl _4 > SnCl _2 ; CuCl > NaCl$

$D.$ $LiF > KF ; \quad CuCl < NaCl$

$E.$ $KF < KI ; CuCl > NaCl$

→
In reaction $2SO_3 \to  2SO_2+O_2$ Initially $40\,gm$ $SO_3$ is heated in $100 \,ml$ container. If after $10\,min\,\,3.2\,gm\,O_2$ is found then found rate of reaction ......... $mol\,L^{-1}\,min^{-1}$
→