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An organic compounds of molecular formula $C_3{H}_{5}O$ did not give a silver mirror with Tollens' reagent but gave an oxime with hydroxylamine, it may be

Which one of, the following bonds has the highest average bond energy (kJ/mol)?

If a metallic wire of resistance R is melted and recast to half of its length, the new resistance of the wire will be?

To an aqueous solution of $AgN{o}_3$ some NaOH (aq) is added, till a brown ppt. is obtained. To this $H_2{O}_2$ is added dropwise. The ppt. turns black with the evolution of $O_2$. The black ppt. is

The number of equivalents of Grignard reagent is required for conversion of an ester to $3^o$ alcohol.

For the $t_{2g}^6{e}_g^2$ system, the value of magnetic moment $\left(\mu \right)$ is

The change in entropy of 2 moles of an ideal gas upon isothermal expansion at 243.6 K from 20 L until the pressure becomes 1 atm is :

1.The Henry's law constant for the solubility of N2gas in water at 298k is 10^5 atm.The mole fraction of N2 is 0.8.Find the number of N2 from air dissolved in 10 moles of water at 298K and 5 atm pressure

2.How many moles in 1litre of water

Which of the following is formed when aluminium oxide and carbon is strongly heated in dry chlorine gas

How many moles of magnesium phosphate $\left(M{g}_3\right(P{O}_4{)}_2)$ will contain $0.25\text{mol}$ of oxygen atoms?

In a normal spinel types structure, the oxide ions are arranged in ccp whereas $\frac{1}{8}$ tetrahedral holes are occupied by $Z{n}^{2+}$ ions and $50\%$ of octahedral holes are occupied by $F{e}^{3+}$ ions. The formula of the compound is –

A man walking briskly in rain with speed v must slant his umbrella forward making an angle θ with the vertical. A student derives the following relation between θ and v: tan θ = v and checks that the relation has a correct limit: as v →0, θ → 0, as expected. (We are assuming there is no strong wind and that the rain falls vertically for a stationary man). Do you think this relation can be correct? If not, guess the correct relation.

A sample of $H_2{O}_2$ is labeled as 10 volume. Its percentage strength is nearly

In which of the following sets, elements have nearly same atomic radii?

The suffix used for saturated hydrocarbons is:

The reaction of $K_3\left[Fe\right(CN{)}_6]$ with freshly prepared $FeS{O}_4$ solution produces a dark blue precipitate called Turnbull’s blue. Reaction of $K_4\left[Fe\right(CN{)}_6]$ with the $FeS{O}_4$ solution in complete absence of air produces a white precipitate X, which turns blue in air. Mixing the $FeS{O}_4$ solution with $NaN{O}_3,$ followed by a slow addition of concentrated $H_{2}S{O}_4$ through the side of the test tube produces a brown ring.



Precipitate X is:

For a reaction:

$3A\to$ products

It is found that the rate of reaction doubles when the concentration of $A$ is increased by eight times. What is the order of the reaction?

One mole of an ideal gas with $\frac{C_p}{C_v}=\gamma$ at absolute temperature $T_1$ is adiabatically compressed from an initial pressure

$P_1$ to a final pressure $P_2$. The resulting temperature $T_2$ of the gas is given by