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The unstable halide among the following is

The following compounds have been arranged in order of their increasing thermal stabilities. Identify the correct order.
$K_{2}C{O}_3\left(I\right),MgC{O}_3\left(II\right),CaC{O}_3\left(III\right),BeC{O}_3\left(IV\right)$

Which of the following produce(s) tert-butylbenzene as the major product?

On hydrolysis, diborane produces?

In E. Coli DNA,$\frac{AT}{GC}$ ratio of is 0.93. If the number of moles of adenine in the DNA sample is 465,000, then the moles of guanine present is

There are 2 adjacent living cells A & B. The cell ‘A’ has osmotic potential ($\Psi$s) of - 7 bars, and pressure potential (${\Psi }_p$) of 5 bars, whereas cell ‘B’ has osmotic potential (${\Psi }_s$) of – 8 bars and pressure potential (${\Psi }_p$) of 3 bars, what will be the direction of water flow in these cells?

A $300g$, $30\%$ (w/w) NaOH solution is mixed with $500g$ $40\%$ (w/w) $NaOH$ solution. What is the molality of final solution?

In a fuel cell, methanol is used as a fuel and $O_2$ is used as an oxidizer. The standard enthalpy of combustion of methanol is $-726{\text{kJmol}}^{-1}$. The standard free energies of formation of $C{H}_{3}OH\left(l\right)$, $C{O}_2\left(g\right)$ and $H_{2}O\left(l\right)$ are − 166.3, −394.4 and $-237.1{\text{kJmol}}^{-1}$ respectively. The efficiency of the fuel cell will be:

Large-scale manufacture of nitric acid by Ostawald process utilizes the reaction-

In which of the following molecules are all the bonds not equal?

What's Henry Smith Law?

Is it asked in jee advanced..

Consider a sample of oxygen at 300 K. Find the average time taken by a molecule to travel a distance equal to the diameter of the earth.

Heat of hydrogenation of cyclohexane is -119KJ and heat of hydrogenation of benzene is 206KJ/mole. Find the resonance energy of benzene.

In three-dimensional solid $Si{O}_2$, hybridization of Si is:

Which type of unit cell is represented in the following figure?

C₂H₅OH and C₂H₅OC₂H₅ contains which among the following functional groups:

The force of attraction between two permanent dipoles is known as

Polymers that are found in nature are called:

Which of the following pairs is/are tautomers of each other?

The pair in which both the complexes have the same magnetic moment (spin only value) is:

The concentration of $\left[A{g}^{+}\right]$ ion in a saturated solution of sparingly soluble salt $A{g}_{2}Cr{O}_4$ at equilibrium is $2.0\times {10}^{-4}$. Calculate the value of $K_{sp}$ for $A{g}_{2}Cr{O}_4$?

Conjugate base of the following reaction is

Reaction:H2SO4 + H2O (reversibly giving)H3O^+ + HSO4^-

Ans gn:H3O^+ ,H2SO4

Among the following compounds, which will react with acetone to give a product containing

Bond distance $C-H$ in $C{H}_4$ is $x\stackrel{\circ }{A}$ and that of $Si-H$ in $Si{H}_4$ is $y\stackrel{\circ }{A}$. $C-Si$ bond is $z\stackrel{\circ }{A}$. Calculate covalent radii of H atom igonoring the electronegativity difference.

The reaction A + B $\rightleftharpoons$​ C + D + heat has reached equilibrium. The reaction may

be made to proceed forward by

Which of the following is used as acidic flux?

What is the molarity of H₂SO₄ solution that has a density of 1.84 g/cc and contains 98% by mass of H₂SO₄

The iron which is obtained from blast furnace is

The electron identified by quantum number n and l

1.n=4,l=1 2.n=4,l=0

3.n=3,l=2 4.n=3,l=1

Can be placed in the order of increasing energy from the lowest to highest as

A) 4<2<3<1 B) 2<4<1<3

C) 1<3<2<4. D) 3<1<4<2

The shape of $XeO{F}_4$ is

Exhausted permutit is

Which bond angle $\theta$ would result in the maximum dipole moment for the triatomic molecule YXY

Among the following pairs of complexes, in which case is the ${\Delta }_0$ value is higher for the first one?

For which of the following equation will $\Delta H$ be equal to $\Delta U$.

Diels - Alder reaction is an example of:

Which of the following options is the correct order of relative stabilities of cations $I,II$ and $III$ as written below (most stable first)?

Which compound is prepared by the following reaction?
$Xe{}_{\left(g\right)}+2F_{2\left(g\right)}\underset{873K,6-7atm}{\overset{Ni\text{vessel}}{\to }}$

Copper has the fcc crystal structure. Assuming an atomic radius of 130 pm for copper atom (Cu = 63.54):

(1) What is the length of the unit cell of Cu?

(2) What is the volume of the unit cell?

(3) How many atoms belong to the unit cell?

(4) Find the density of Cu?

Four one litre flasks are separately filled with the gases, $O_2,F_2,C{H}_4$ and $C{O}_2$ under the same conditions. The ratio of number of molecules in these gases:

Two liquids X and Y form an ideal solution.At 300 K,vapour pressure of the solution containing 1 mol of X and 3 mol of Y is 550 mm Hg.At the same temperature, if 1 mol of Y is further added to this solution,vapour pressure of the solution increases by 10mm Hg.So, vapour pressure (in mm Hg) of X and Y in their pure states will be, respectively,

Which among the following plants can metobolise nitrogen oxides?

(1)Coconut (2) Pinus (3) Juniparus (4) Quereus

Regular use of which of the following fertilizers increases the acidic strength of soil?