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Which linkages is characteristic of polysaccharides?

A saturated solution of $XC{l}_3$ has a vapour pressure of 17.20 mm Hg at 20$°C$, while pure water vapour pressure is 17.25 mm Hg. Solubility product ($K_{sp}$) of $XC{l}_3$ at 20$°C$ is:

Observe the following structures and pick up the correct statement ?

Acidulated water is electrolysed by 1A current for 16 minutes and 5 seconds using inert electrodes. The volume of gases liberated at STP will be :

Which of the
following statements is not true for a lyophobic sol

The given diagram indicates the energy levels of certain atoms. When the systemmoves from 2E level to E a photon of wave length $\lambda$ is emitted. The wave - length of photon produced during its transition from $\frac{4E}{3}$ level to E is

LPG is a mixture of

Suppose that an alkaline dry cell was manufactured using cadmium metal rather than zinc. What happens to emf?

Choose the correct order(s) of basic strengths of given amines in gaseous phase.

The atomic weight of Al is 27. When a current of 5 Faradays is passed through a solution of Al⁺³ions, the weight of Al deposited is

Four $1L$ 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 is:

Ionic compounds are formed most easily with

Carbon percentage is maximum in [BHU 1998]

The detergent action of soap is due to its ___.

Which of the following is used as an anaesthetic agent?

For a consecutive reaction $R_1\stackrel{k_1}{\to }{R}_2{R}_1\stackrel{k_2}{\to }{R}_3$ If initial concentration of $R_1$ is 100 M and $k_1:k_2=1:0.15$ the value of $[R_2{]}_{max}$ is $[Given:k_1=4.0\times {10}^{-2}mi{n}^{-1}]$

The density of a gas at ${27}^{0}C$ and 1 atm is d. Pressure remaining constant at what temperature will it's density becomes 0.75 d

Value of heat of fusion of NaCI is

If $y_1\left(x\right)$ is a solution of the differential equation $\frac{dy}{dx}-f\left(x\right)y=0$, then a solution of the differential equation $\frac{dy}{dx}+f\left(x\right)y=r\left(x\right)$

In the following compound, the number of primary carbon atoms are:

$C{H}_3-\stackrel{C{H}_3}{\stackrel{|}{\underset{C{H}_3}{\underset{|}{C}}}}-\underset{C{H}_3}{\underset{|}{CH}}-C{H}_3$

Find the ratio of energies of violet light $({\lambda }_1=4.10\times {10}^{-5}\text{cm})$ to that of red light $({\lambda }_2=6.56\times {10}^{-5}\text{cm})$.

Lead (IV) Oxide is:

For decolourization of 1 mole of $KMn{O}_4$, the moles of $H_2{O}_2$ required is

Consider a sparingly soluble salt $AB$ having solubility as $smol{L}^{-1}$. What will be the value of $K_{sp}$ for $AB$ salt.

Which of the following compounds is colored?

A binary solid $\left(A^{+}{B}^{-}\right)$ has a rock salt structure. If the edge length is 400 pm and radius of cation is 75 pm, the radius of anion is

In the given transformation, which of the following is the most appropriate reagent?

If pressure becomes double at the same absolute temperature on 2 L of $C{O}_2$ , then the final volume of $C{O}_2$ will be?

Percent by mass of a solute (molar mass = 28 g) in its aqueous solution is 28. Calculate the mole fraction (X) and molality (m) of the solute in the solution.

Which one of the following pairs gives effervescence with aqueous sodium bicarbonate?

In the balanced chemical reaction,

$I{O}_3^{-}+a{I}^{-}+b{H}^{+}⟶c{H}_{2}O+d{I}_2$

a, b, c and d respectively correspond to

Under the same reaction conditions, initial concentration of 1.386 $mold{m}^{-3}$ of a substance becomes half in 40 s amd 20 s through first order and zero order kinetics respectively. Ratio $\left(\frac{k_1}{k_0}\right)$ of the rate constants for first order $\left(k_1\right)$ and zero order $\left(k_0\right)$ of the reaction is:

Match the following



$\begin{array}{ccc}\text{(1)}TeC{l}_4& \text{(i) Trigonal Planar}& \text{(I) See-Saw}\\ \text{(2)}IC{l}_5& \text{(ii) Octahedral}& \text{(II) Pyramidal}\\ \text{(3)}P{H}_3& \text{(iii) Trigonal bipyramidal}& \text{(III) Square pyramidal}\\ \text{(4)}N{O}_2^{-}& \text{(iv) Tetrahedral}& \text{(IV) Bent}\end{array}$

Enantiomers can be separated by:

Reactivity of alkyl halides towards dehydrohalogenation reaction is

Two gas bulbs A and B are connected by a tube having a stopcock. Bulb A has a volume of $100$ mL and contains hydrogen. After opening the gas moves from A to the evacuated bulb B, the pressure falls down to $40\%$. The volume (mL) of B must be:

Which of the following reasons cause the limited use of H₂ as a fuel?



I) Its calorific value is low.

II) Its availability in free state is less.

III) It is difficult to store.

IV) It is not a clean fuel.

One mole of a symmetrical alkene on ozonolysis gives two moles of an aldehyde having a molecular mass of 44 amu. The alkene is :

In a first order reaction the concentration of reactant decreases from $800mol/d{m}^3$ to $50mol/d{m}^3$ in $2\times {10}^{4}s$. The rate constant of reaction in $s^{-1}$ is:

Arrange the compounds in the order of decreasing boiling points.

1. Ethanol

2. Propane

3. Pentanol

Which of the following is not suitable for leaching?

In $1\text{g}$ of a metal oxide, the amount of metal present is $0.68\text{g}$. What is the equivalent weight of the metal?