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The compound that does not have a $\pi$ bond is:

The oxidising species in Benedict solution is

Most effective ion for the coagulation of $A{s}_2{S}_3$ sol is

In the following reaction sequence

X and Y are, respectively

Reaction of phenol with chloroform in presence of dilute sodium hydroxide finally introduces which one of the following funtional group ?

Predict the product 'P'.

The increasing order of boiling points of the below mentioned alcohols is

$\left(I\right)1,2-$dihydroxybenzene

$\left(II\right)1,3-$dihydroxybenzene

$\left(III\right)1,4-$dihydroxybenzene

$\left(IV\right)$Hydroxybenzene

Solubility of $Mg(OH{)}_2$ is maximum in $\left[K_{sp}ofMg\right(OH{)}_2=4\times {10}^{–3}]$

The
partial pressure of ethane over a solution containing 6.56 ×
10⁻³
g of ethane is 1 bar. If the solution contains 5.00 × 10⁻²
g of ethane, then what shall be the partial pressure of the gas?

The type of bonds in $CuS{O}_4.5H_{2}O$ are

Nitrogen reacts with hydrogen under high temperature and pressure and forms ammonia. Which type of change is undergone in the given example?

The starting substance for the preparation of $C{H}_{3}I$ is

The equilibrium constant for the reaction : $A\left(g\right)+B\left(g\right)\rightleftharpoons C\left(g\right)+D\left(g\right)$ is $1\times {10}^{-2}$ at 298K and it is 2 at 373K. The chemical process resulting the formation of C and D is

Choose the correct option for the given reaction,

$N_2{O}_4\left(g\right)\to 2N{O}_2\left(g\right)$

Identify A in the given chemical reaction.

The reaction CH4(g)+Cl_2(g) → CH_3Cl(g) + HCl(g) has △ H=-25 kcal and bond dissociation energy of C-Cl, H-Cl, C-H and Cl-Cl is given as 84 kcal/mol, 103 kcal/mol, x kcal/mol and y kcal/mol respectively. Given x:y =9:5, then bond energy of Cl-Cl bond in kcal/mol is (1) 57.57 (2) 67.75 (3) 70 (4) 80

The synthesis of 3 - octyne is achieved by adding a bromoalkane into a mixture of sodium amide and an alkyne. The bromoalkane and alkyne respectively are

When a solution containing $wg$ of urea in $1kg$ of water is cooled to $-{0.372}^{\circ }C,200g$ of ice is separated. If $K_f$ for water is $1.86Kkgmo{l}^{-1},w$ is:

Which of the following amines will give primary alcohol with $NaN{O}_2/Conc.HCl:$



$\left(a\right)C{H}_3-C{H}_2-\underset{C{H}_3}{\underset{|}{C}}-N{H}_2$



$\left(b\right)C{H}_3-\underset{C{H}_3}{\underset{|}{\stackrel{C{H}_3}{\stackrel{|}{C}}}}-N{H}_2$



$\left(c\right)C{H}_3-\underset{C{H}_3}{\underset{|}{C}}-C{H}_2-C{H}_2-N{H}_2$

$\left(d\right)Allofthese$

2 mole of an ideal gas at ${27}^{\circ }C$ expands iso - thermally and reversibly from a volume of 4 litre to 40 litre. The work done(in kJ)by the gas is:

The diffraction of a crystal of Barium with X-rays of wavelength 2.29angstroms gives a first order reflection at ${27.8}^{\circ }$. What is the distance between the diffracting planes (In angstroms)? (Sin 27.8 = 0.4561)

Scandium belong to which block elements:

The given redox reaction

$B{r}_2+O{H}^{-}\to Br{O}_3^{-}+B{r}^{-}+H_{2}O$
is balanced by ion electron method. Choose the correct statement(s) regarding stoichiometric ratios $\frac{n_a}{n_b}$ :
Here $a,b$ represents different species in the reaction.

Assuming that dry air contain $79\%N_{2}and21\%O_2$ by volume. Find the density of moist air at ${25}^{\circ }$C and 1.0atm when the relative humidity is $60\%$. The vapour pressure of water at ${25}^{\circ }$C is 23.76 mm Hg.

The chlorine atom of the following compound

that reacts most readily with $AgN{O}_3$ to give a precipitate is

Which of the following is the $\alpha$ -carbon in

In the reaction

$S+\frac{3}{2}{O}_2\to S{O}_3+2xkJ$ and $S{O}_2+\frac{1}{2}{O}_2\to S{O}_3+ykJ$

Heat of formation of $S{O}_2$ is

Which of the following compounds yields only one product on monobromination?