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Match List-I with List-II. **List-I (Compound)** A. $NH_3$ B. $BrF_5$ C. $XeF_4$ D. $SF_6$ **List-II (Shape/geometry)** I. Trigonal Pyramidal II. Square Planar III. Octahedral IV. Square Pyramidal
Which one of the following orders is correct for the bond dissociation enthalpy of halogen molecules?
Adsorption of gases on a solid surface is generally exothermic because
<p class="p1" style="font-width: normal; font-size: 10px; line-height: normal; font-family: Helvetica; font-size-adjust: none; font-kerning: auto; font-variant-alternates: normal; font-variant-ligatures: normal; font-variant-numeric: normal; font-variant-east-asian: normal; font-variant-position: normal; font-feature-settings: normal; font-optical-sizing: auto; font-variation-settings: normal; color: rgb(20, 20, 19); white-space: normal;">In Young's double slit experiment the</p><p class="p1" style="font-width: normal; font-size: 10px; line-height: normal; font-family: Helvetica; font-size-adjust: none; font-kerning: auto; font-variant-alternates: normal; font-variant-ligatures: normal; font-variant-numeric: normal; font-variant-east-asian: normal; font-variant-position: normal; font-feature-settings: normal; font-optical-sizing: auto; font-variation-settings: normal; color: rgb(20, 20, 19); white-space: normal;">separation d between the slits is 2 mm, the</p><p class="p1" style="font-width: normal; font-size: 10px; line-height: normal; font-family: Helvetica; font-size-adjust: none; font-kerning: auto; font-variant-alternates: normal; font-variant-ligatures: normal; font-variant-numeric: normal; font-variant-east-asian: normal; font-variant-position: normal; font-feature-settings: normal; font-optical-sizing: auto; font-variation-settings: normal; color: rgb(20, 20, 19); white-space: normal;">wavelength <span class="s1" style="font-width: normal; line-height: normal; font-family: Symbol; font-size-adjust: none; font-kerning: auto; font-variant-alternates: normal; font-variant-ligatures: normal; font-variant-numeric: normal; font-variant-east-asian: normal; font-variant-position: normal; font-feature-settings: normal; font-optical-sizing: auto; font-variation-settings: normal;"></span> of the light used is 5896 Å and</p><p class="p1" style="font-width: normal; font-size: 10px; line-height: normal; font-family: Helvetica; font-size-adjust: none; font-kerning: auto; font-variant-alternates: normal; font-variant-ligatures: normal; font-variant-numeric: normal; font-variant-east-asian: normal; font-variant-position: normal; font-feature-settings: normal; font-optical-sizing: auto; font-variation-settings: normal; color: rgb(20, 20, 19); white-space: normal;">distance D between the screen and slits is</p><p class="p1" style="font-width: normal; font-size: 10px; line-height: normal; font-family: Helvetica; font-size-adjust: none; font-kerning: auto; font-variant-alternates: normal; font-variant-ligatures: normal; font-variant-numeric: normal; font-variant-east-asian: normal; font-variant-position: normal; font-feature-settings: normal; font-optical-sizing: auto; font-variation-settings: normal; color: rgb(20, 20, 19); white-space: normal;">100 cm. It is found that the angular width of</p><p class="p1" style="font-width: normal; font-size: 10px; line-height: normal; font-family: Helvetica; font-size-adjust: none; font-kerning: auto; font-variant-alternates: normal; font-variant-ligatures: normal; font-variant-numeric: normal; font-variant-east-asian: normal; font-variant-position: normal; font-feature-settings: normal; font-optical-sizing: auto; font-variation-settings: normal; color: rgb(20, 20, 19); white-space: normal;">the fringes is 0.20°. To increase the fringe</p><p class="p1" style="font-width: normal; font-size: 10px; line-height: normal; font-family: Helvetica; font-size-adjust: none; font-kerning: auto; font-variant-alternates: normal; font-variant-ligatures: normal; font-variant-numeric: normal; font-variant-east-asian: normal; font-variant-position: normal; font-feature-settings: normal; font-optical-sizing: auto; font-variation-settings: normal; color: rgb(20, 20, 19); white-space: normal;">angular width to 0.21° (with same <span class="s1" style="font-width: normal; line-height: normal; font-family: Symbol; font-size-adjust: none; font-kerning: auto; font-variant-alternates: normal; font-variant-ligatures: normal; font-variant-numeric: normal; font-variant-east-asian: normal; font-variant-position: normal; font-feature-settings: normal; font-optical-sizing: auto; font-variation-settings: normal;"></span> and D) the</p><p class="p1" style="font-width: normal; font-size: 10px; line-height: normal; font-family: Helvetica; font-size-adjust: none; font-kerning: auto; font-variant-alternates: normal; font-variant-ligatures: normal; font-variant-numeric: normal; font-variant-east-asian: normal; font-variant-position: normal; font-feature-settings: normal; font-optical-sizing: auto; font-variation-settings: normal; color: rgb(20, 20, 19); white-space: normal;">separation between the slits needs to be</p><p class="p1" style="font-width: normal; font-size: 10px; line-height: normal; font-family: Helvetica; font-size-adjust: none; font-kerning: auto; font-variant-alternates: normal; font-variant-ligatures: normal; font-variant-numeric: normal; font-variant-east-asian: normal; font-variant-position: normal; font-feature-settings: normal; font-optical-sizing: auto; font-variation-settings: normal; color: rgb(20, 20, 19); white-space: normal;">changed to</p>
In which of the following techniques, the embryos are transferred to assist those females who cannot conceive?
Which of the following compounds has a higher hydration energy than the lattice energy?
Bond dissociation enthalpy of $\text{H}_2$, $\text{Cl}_2$, and $\text{HCl}$ are $434$, $242$, and $431 \text{ kJ mol}^{-1}$ respectively. Enthalpy of formation of $\text{HCl}$ is:
For the reaction, $2\text{Cl(g)} \rightarrow \text{Cl}_2\text{(g)}$, the correct option is:
Which one of the following molecules is paramagnetic?
Given the following bond energies: $\text{H}-\text{H}$ bond energy: $431.37 \text{ kJ mol}^{-1}$ $\text{C}=\text{C}$ bond energy: $606.10 \text{ kJ mol}^{-1}$ $\text{C}-\text{C}$ bond energy: $336.49 \text{ kJ mol}^{-1}$ $\text{C}-\text{H}$ bond energy: $410.50 \text{ kJ mol}^{-1}$ Enthalpy for the reaction, $\text{CH}_2=\text{CH}_2 + \text{H}_2 \rightarrow \text{CH}_3-\text{CH}_3$ will be:
At $27^\circ\text{C}$ latent heat of fusion of a compound is $2930\text{ J/mol}$. Entropy change is:
The correct order of bond angles in the following compounds/species is:
The bond dissociation energies of $X_2$, $Y_2$ and $XY$ are in the ratio of $1 : 0.5 : 1$. $\Delta H$ for the formation of $XY$ is $-200 \text{ kJ mol}^{-1}$. The bond dissociation energy of $X_2$ will be:
The enthalpy of fusion of water is $1.435 \text{ kcal/mol}$. The molar entropy change for the melting of ice at $0^\circ\text{C}$ is:
The correct order of ionic character among CaH$$_2$$, BeH$$_2$$ and BaH$$_2$$ is:
Mark the correct order of repulsion among the following according to the VSEPR theory.
The correct order of dipole moments for molecules NH$$_3$$, H$$_2$$S, CH$$_4$$ and HF is:
The correct order of energies of molecular orbitals of N$$_2$$ molecule is:
The correct shape and hybridisation of BrF$_5$ is:
Given the following five species: $NH_3, AlCl_3, BeCl_2, CCl_4, PCl_5$. The total number of these species that do not have eight electrons around the central atom in its/their outermost shell, is: