MCQ
One calorie is equal to
- A$0.4184 $ $Joule$
- ✓$4.184$ $Joule$
- C$41.84 $ $Joule$
- D$418.4$ $Joule$
A calorie is the amount of energy that is supplied in the nutrients that make up food. Because it is a form of energy, calories can be converted to joules through a measurement of heat.
$1$ calorie $=4.186$ joules. is the required answer.
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| List $I$ (Mixture) | List $II$ (Separation Technique) |
| $A$ $CHCl _3+ C _6 H _5 NH _2$ | $I$ Steam distillation |
| $B$ $C _6 H _{14}+ C _5 H _{12}$ | $II$ Differential extraction |
| $C$ $C _6 H _5 NH _2+ H _2 O$ | $III$ Distillation |
| $D$ Organic compound in $H _2 O$ | $IV$ Fractional distillation |
$\mathrm{A}+\mathrm{B} \rightleftharpoons 2 \mathrm{C}$
the value of equilibrium constant is $100$ at $298\, \mathrm{~K}$. If the initial concentration of all the three species is $1\, \mathrm{M}$ each, then the equilibrium concentration of $\mathrm{C}$ is $\mathrm{X} \times 10^{-1} \,\mathrm{M}$. The value of $\mathrm{x}$ is $.....$ (Nearest integer)
$Cr _2 O _7^{2-}+ XH ^{+}+6 Fe ^{2+} \rightarrow YCr ^{3+}+6 Fe ^{3+}+ ZH _2 O$
The sum of $X . Y$ and $Z$ is $.......$.
Statement $II:$- The crossed arrow of the dipole moment symbolizes the direction of the shift of charges in the molecules.
In the light of the above statements, choose the most appropriate answer from the options given below :-